Action not permitted
Modal body text goes here.
Modal Title
Modal Body
OESA-2022-1993 (CVE-2021-25215)
Vulnerability from osv_openeuler – Published: 2022-10-14 11:05 – Updated: 2026-08-06 11:05 – Source website
VLAI
Summary
dhcp security update
Details
The Dynamic Host Configuration Protocol (DHCP) is a network management protocol used on UDP/IP networks whereby a DHCP server dynamically assigns an IP address and other network configuration parameters to each device on a network so they can communicate with other IP networks.
Security Fix(es):
In BIND 9.0.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9.(CVE-2021-25215)
In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.(CVE-2021-25214)
In BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 -> 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it possible for its internal data structures to grow almost infinitely, which may cause significant delays in client query processing.(CVE-2021-25219)
BIND 9.11.0 -> 9.11.36 9.12.0 -> 9.16.26 9.17.0 -> 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 -> 9.11.36-S1 9.16.8-S1 -> 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including Supported Preview Editions - are also believed to be affected but have not been tested as they are EOL. The cache could become poisoned with incorrect records leading to queries being made to the wrong servers, which might also result in false information being returned to clients.(CVE-2021-25220)
Severity
7.5 (High)
References
{
"affected": [
{
"ecosystem_specific": {
"aarch64": [
"dhcp-devel-4.4.2-8.oe1.aarch64.rpm",
"dhcp-debuginfo-4.4.2-8.oe1.aarch64.rpm",
"dhcp-4.4.2-8.oe1.aarch64.rpm",
"dhcp-debugsource-4.4.2-8.oe1.aarch64.rpm"
],
"noarch": [
"dhcp-help-4.4.2-8.oe1.noarch.rpm"
],
"src": [
"dhcp-4.4.2-8.oe1.src.rpm"
],
"x86_64": [
"dhcp-4.4.2-8.oe1.x86_64.rpm",
"dhcp-debugsource-4.4.2-8.oe1.x86_64.rpm",
"dhcp-debuginfo-4.4.2-8.oe1.x86_64.rpm",
"dhcp-devel-4.4.2-8.oe1.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:20.03-LTS-SP1",
"name": "dhcp",
"purl": "pkg:rpm/openEuler/dhcp\u0026distro=openEuler-20.03-LTS-SP1"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.4.2-8.oe1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"ecosystem_specific": {
"aarch64": [
"dhcp-devel-4.4.2-8.oe1.aarch64.rpm",
"dhcp-debugsource-4.4.2-8.oe1.aarch64.rpm",
"dhcp-debuginfo-4.4.2-8.oe1.aarch64.rpm",
"dhcp-4.4.2-8.oe1.aarch64.rpm"
],
"noarch": [
"dhcp-help-4.4.2-8.oe1.noarch.rpm"
],
"src": [
"dhcp-4.4.2-8.oe1.src.rpm"
],
"x86_64": [
"dhcp-devel-4.4.2-8.oe1.x86_64.rpm",
"dhcp-debugsource-4.4.2-8.oe1.x86_64.rpm",
"dhcp-debuginfo-4.4.2-8.oe1.x86_64.rpm",
"dhcp-4.4.2-8.oe1.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:20.03-LTS-SP3",
"name": "dhcp",
"purl": "pkg:rpm/openEuler/dhcp\u0026distro=openEuler-20.03-LTS-SP3"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.4.2-8.oe1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"ecosystem_specific": {
"aarch64": [
"dhcp-debuginfo-4.4.2-14.oe2203.aarch64.rpm",
"dhcp-devel-4.4.2-14.oe2203.aarch64.rpm",
"dhcp-4.4.2-14.oe2203.aarch64.rpm",
"dhcp-debugsource-4.4.2-14.oe2203.aarch64.rpm"
],
"noarch": [
"dhcp-help-4.4.2-14.oe2203.noarch.rpm"
],
"src": [
"dhcp-4.4.2-14.oe2203.src.rpm"
],
"x86_64": [
"dhcp-debugsource-4.4.2-14.oe2203.x86_64.rpm",
"dhcp-4.4.2-14.oe2203.x86_64.rpm",
"dhcp-devel-4.4.2-14.oe2203.x86_64.rpm",
"dhcp-debuginfo-4.4.2-14.oe2203.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:22.03-LTS",
"name": "dhcp",
"purl": "pkg:rpm/openEuler/dhcp\u0026distro=openEuler-22.03-LTS"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.4.2-14.oe2203"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"severity": "High"
},
"details": "The Dynamic Host Configuration Protocol (DHCP) is a network management protocol used on UDP/IP networks whereby a DHCP server dynamically assigns an IP address and other network configuration parameters to each device on a network so they can communicate with other IP networks.\r\n\r\nSecurity Fix(es):\r\n\r\nIn BIND 9.0.0 -\u0026gt; 9.11.29, 9.12.0 -\u0026gt; 9.16.13, and versions BIND 9.9.3-S1 -\u0026gt; 9.11.29-S1 and 9.16.8-S1 -\u0026gt; 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -\u0026gt; 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9.(CVE-2021-25215)\r\n\r\nIn BIND 9.8.5 -\u0026gt; 9.8.8, 9.9.3 -\u0026gt; 9.11.29, 9.12.0 -\u0026gt; 9.16.13, and versions BIND 9.9.3-S1 -\u0026gt; 9.11.29-S1 and 9.16.8-S1 -\u0026gt; 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -\u0026gt; 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.(CVE-2021-25214)\r\n\r\nIn BIND 9.3.0 -\u0026gt; 9.11.35, 9.12.0 -\u0026gt; 9.16.21, and versions 9.9.3-S1 -\u0026gt; 9.11.35-S1 and 9.16.8-S1 -\u0026gt; 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -\u0026gt; 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it possible for its internal data structures to grow almost infinitely, which may cause significant delays in client query processing.(CVE-2021-25219)\r\n\r\nBIND 9.11.0 -\u0026gt; 9.11.36 9.12.0 -\u0026gt; 9.16.26 9.17.0 -\u0026gt; 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 -\u0026gt; 9.11.36-S1 9.16.8-S1 -\u0026gt; 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including Supported Preview Editions - are also believed to be affected but have not been tested as they are EOL. The cache could become poisoned with incorrect records leading to queries being made to the wrong servers, which might also result in false information being returned to clients.(CVE-2021-25220)",
"id": "OESA-2022-1993",
"modified": "2026-08-06T11:05:18Z",
"published": "2022-10-14T11:05:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1993"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25215"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25214"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25219"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25220"
}
],
"schema_version": "1.7.2",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "dhcp security update",
"upstream": [
"CVE-2021-25215",
"CVE-2021-25214",
"CVE-2021-25219",
"CVE-2021-25220"
]
}
CVE-2021-25214 (GCVE-0-2021-25214)
Vulnerability from cvelistv5 – Published: 2021-04-29 00:55 – Updated: 2024-09-17 00:37
VLAI
EPSS
VEX
Title
A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly
Summary
In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.
Severity
6.5 (Medium)
CWE
- Incremental zone transfers (IXFR) provide a way of transferring changed portion(s) of a zone between servers. An IXFR stream containing SOA records with an owner name other than the transferred zone's apex may cause the receiving named server to inadvertently remove the SOA record for the zone in question from the zone database. This leads to an assertion failure when the next SOA refresh query for that zone is made. Affects BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch.
Assigner
References
11 references
| URL | Tags |
|---|---|
| https://kb.isc.org/v1/docs/cve-2021-25214 | x_refsource_CONFIRM |
| http://www.openwall.com/lists/oss-security/2021/04/29/1 | mailing-listx_refsource_MLIST |
| http://www.openwall.com/lists/oss-security/2021/04/29/2 | mailing-listx_refsource_MLIST |
| http://www.openwall.com/lists/oss-security/2021/04/29/3 | mailing-listx_refsource_MLIST |
| http://www.openwall.com/lists/oss-security/2021/04/29/4 | mailing-listx_refsource_MLIST |
| https://www.debian.org/security/2021/dsa-4909 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://security.netapp.com/advisory/ntap-2021052… | x_refsource_CONFIRM |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND9 |
Affected:
Open Source Branch 9.8 9.8.5 through 9.8.8
Affected: Open Source Branches 9.9 through 9.11 9.9.3 through versions before 9.11.30 Affected: Open Source Branches 9.12 through 9.16 9.12.0 through versions before 9.16.14 Affected: Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 through versions before 9.11.30-S1 Affected: Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.14-S1 Affected: Development Branch 9.17 9.17.0 through versiosn before 9.17.12 |
Date Public
2021-04-28 00:00
Credits
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T19:56:11.064Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://kb.isc.org/v1/docs/cve-2021-25214"
},
{
"name": "[oss-security] 20210428 ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"tags": [
"mailing-list",
"x_refsource_MLIST",
"x_transferred"
],
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/1"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"tags": [
"mailing-list",
"x_refsource_MLIST",
"x_transferred"
],
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/2"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"tags": [
"mailing-list",
"x_refsource_MLIST",
"x_transferred"
],
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/3"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"tags": [
"mailing-list",
"x_refsource_MLIST",
"x_transferred"
],
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/4"
},
{
"name": "DSA-4909",
"tags": [
"vendor-advisory",
"x_refsource_DEBIAN",
"x_transferred"
],
"url": "https://www.debian.org/security/2021/dsa-4909"
},
{
"name": "[debian-lts-announce] 20210504 [SECURITY] [DLA 2647-1] bind9 security update",
"tags": [
"mailing-list",
"x_refsource_MLIST",
"x_transferred"
],
"url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html"
},
{
"name": "FEDORA-2021-ace61cbee1",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/"
},
{
"name": "FEDORA-2021-47f23870ec",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://security.netapp.com/advisory/ntap-20210521-0006/"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "BIND9",
"vendor": "ISC",
"versions": [
{
"status": "affected",
"version": "Open Source Branch 9.8 9.8.5 through 9.8.8"
},
{
"status": "affected",
"version": "Open Source Branches 9.9 through 9.11 9.9.3 through versions before 9.11.30"
},
{
"status": "affected",
"version": "Open Source Branches 9.12 through 9.16 9.12.0 through versions before 9.16.14"
},
{
"status": "affected",
"version": "Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 through versions before 9.11.30-S1"
},
{
"status": "affected",
"version": "Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.14-S1"
},
{
"status": "affected",
"version": "Development Branch 9.17 9.17.0 through versiosn before 9.17.12"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "ISC would like to thank Greg Kuechle of SaskTel for bringing this vulnerability to our attention."
}
],
"datePublic": "2021-04-28T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "In BIND 9.8.5 -\u003e 9.8.8, 9.9.3 -\u003e 9.11.29, 9.12.0 -\u003e 9.16.13, and versions BIND 9.9.3-S1 -\u003e 9.11.29-S1 and 9.16.8-S1 -\u003e 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -\u003e 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed."
}
],
"exploits": [
{
"lang": "en",
"value": "We are not aware of any active exploits."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "Incremental zone transfers (IXFR) provide a way of transferring changed portion(s) of a zone between servers. An IXFR stream containing SOA records with an owner name other than the transferred zone\u0027s apex may cause the receiving named server to inadvertently remove the SOA record for the zone in question from the zone database. This leads to an assertion failure when the next SOA refresh query for that zone is made. Affects BIND 9.8.5 -\u003e 9.8.8, 9.9.3 -\u003e 9.11.29, 9.12.0 -\u003e 9.16.13, and versions BIND 9.9.3-S1 -\u003e 9.11.29-S1 and 9.16.8-S1 -\u003e 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -\u003e 9.17.11 of the BIND 9.17 development branch.",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2022-03-08T14:07:48.000Z",
"orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
"shortName": "isc"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://kb.isc.org/v1/docs/cve-2021-25214"
},
{
"name": "[oss-security] 20210428 ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/1"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/2"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/3"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/4"
},
{
"name": "DSA-4909",
"tags": [
"vendor-advisory",
"x_refsource_DEBIAN"
],
"url": "https://www.debian.org/security/2021/dsa-4909"
},
{
"name": "[debian-lts-announce] 20210504 [SECURITY] [DLA 2647-1] bind9 security update",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html"
},
{
"name": "FEDORA-2021-ace61cbee1",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/"
},
{
"name": "FEDORA-2021-47f23870ec",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://security.netapp.com/advisory/ntap-20210521-0006/"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to the patched release most closely related to your current version of BIND:\n\n BIND 9.11.31\n BIND 9.16.15\n BIND 9.17.12\n\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n\n BIND 9.11.31-S1\n BIND 9.16.15-S1"
}
],
"source": {
"discovery": "USER"
},
"title": "A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly",
"workarounds": [
{
"lang": "en",
"value": "Disabling incremental zone transfers (IXFR) by setting request-ixfr no; in the desired configuration block (options, zone, or server) prevents the failing assertion from being evaluated."
}
],
"x_generator": {
"engine": "Vulnogram 0.0.9"
},
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security-officer@isc.org",
"DATE_PUBLIC": "2021-04-28T20:19:47.000Z",
"ID": "CVE-2021-25214",
"STATE": "PUBLIC",
"TITLE": "A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "BIND9",
"version": {
"version_data": [
{
"version_name": "Open Source Branch 9.8",
"version_value": "9.8.5 through 9.8.8"
},
{
"version_name": "Open Source Branches 9.9 through 9.11",
"version_value": "9.9.3 through versions before 9.11.30"
},
{
"version_name": "Open Source Branches 9.12 through 9.16",
"version_value": "9.12.0 through versions before 9.16.14"
},
{
"version_name": "Supported Preview Branches 9.9-S through 9.11-S",
"version_value": "9.9.3-S1 through versions before 9.11.30-S1"
},
{
"version_name": "Supported Preview Branch 9.16-S",
"version_value": "9.16.8-S1 through versions before 9.16.14-S1"
},
{
"version_name": "Development Branch 9.17",
"version_value": "9.17.0 through versiosn before 9.17.12"
}
]
}
}
]
},
"vendor_name": "ISC"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "ISC would like to thank Greg Kuechle of SaskTel for bringing this vulnerability to our attention."
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "In BIND 9.8.5 -\u003e 9.8.8, 9.9.3 -\u003e 9.11.29, 9.12.0 -\u003e 9.16.13, and versions BIND 9.9.3-S1 -\u003e 9.11.29-S1 and 9.16.8-S1 -\u003e 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -\u003e 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed."
}
]
},
"exploit": [
{
"lang": "en",
"value": "We are not aware of any active exploits."
}
],
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Incremental zone transfers (IXFR) provide a way of transferring changed portion(s) of a zone between servers. An IXFR stream containing SOA records with an owner name other than the transferred zone\u0027s apex may cause the receiving named server to inadvertently remove the SOA record for the zone in question from the zone database. This leads to an assertion failure when the next SOA refresh query for that zone is made. Affects BIND 9.8.5 -\u003e 9.8.8, 9.9.3 -\u003e 9.11.29, 9.12.0 -\u003e 9.16.13, and versions BIND 9.9.3-S1 -\u003e 9.11.29-S1 and 9.16.8-S1 -\u003e 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -\u003e 9.17.11 of the BIND 9.17 development branch."
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://kb.isc.org/v1/docs/cve-2021-25214",
"refsource": "CONFIRM",
"url": "https://kb.isc.org/v1/docs/cve-2021-25214"
},
{
"name": "[oss-security] 20210428 ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/1"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/2"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/3"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/4"
},
{
"name": "DSA-4909",
"refsource": "DEBIAN",
"url": "https://www.debian.org/security/2021/dsa-4909"
},
{
"name": "[debian-lts-announce] 20210504 [SECURITY] [DLA 2647-1] bind9 security update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html"
},
{
"name": "FEDORA-2021-ace61cbee1",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/"
},
{
"name": "FEDORA-2021-47f23870ec",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/"
},
{
"name": "https://security.netapp.com/advisory/ntap-20210521-0006/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20210521-0006/"
},
{
"name": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf",
"refsource": "CONFIRM",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
}
]
},
"solution": [
{
"lang": "en",
"value": "Upgrade to the patched release most closely related to your current version of BIND:\n\n BIND 9.11.31\n BIND 9.16.15\n BIND 9.17.12\n\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n\n BIND 9.11.31-S1\n BIND 9.16.15-S1"
}
],
"source": {
"discovery": "USER"
},
"work_around": [
{
"lang": "en",
"value": "Disabling incremental zone transfers (IXFR) by setting request-ixfr no; in the desired configuration block (options, zone, or server) prevents the failing assertion from being evaluated."
}
]
}
}
},
"cveMetadata": {
"assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
"assignerShortName": "isc",
"cveId": "CVE-2021-25214",
"datePublished": "2021-04-29T00:55:16.042Z",
"dateReserved": "2021-01-15T00:00:00.000Z",
"dateUpdated": "2024-09-17T00:37:21.136Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2021-25215 (GCVE-0-2021-25215)
Vulnerability from cvelistv5 – Published: 2021-04-29 00:55 – Updated: 2024-09-16 22:02
VLAI
EPSS
VEX
Title
An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself
Summary
In BIND 9.0.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9.
Severity
7.5 (High)
CWE
- DNAME records, described in RFC 6672, provide a way to redirect a subtree of the domain name tree in the DNS. A flaw in the way named processes these records may trigger an attempt to add the same RRset to the ANSWER section more than once. This causes an assertion check in BIND to fail. DNAME records are processed by both authoritative and recursive servers. For authoritative servers, the DNAME record triggering the flaw can be retrieved from a zone database. For servers performing recursion, such a record is processed in the course of a query sent to an authoritative server. Affects BIND 9.0.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch.
Assigner
References
12 references
| URL | Tags |
|---|---|
| https://kb.isc.org/v1/docs/cve-2021-25215 | x_refsource_CONFIRM |
| http://www.openwall.com/lists/oss-security/2021/04/29/1 | mailing-listx_refsource_MLIST |
| http://www.openwall.com/lists/oss-security/2021/04/29/2 | mailing-listx_refsource_MLIST |
| http://www.openwall.com/lists/oss-security/2021/04/29/3 | mailing-listx_refsource_MLIST |
| http://www.openwall.com/lists/oss-security/2021/04/29/4 | mailing-listx_refsource_MLIST |
| https://www.debian.org/security/2021/dsa-4909 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://www.oracle.com/security-alerts/cpuoct2021.html | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021052… | x_refsource_CONFIRM |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND9 |
Affected:
Open Source Branches 9.0 through 9.11 9.0.0 through versions before 9.11.30
Affected: Open Source Branches 9.12 through 9.16 9.12.0 through versions before 9.16.14 Affected: Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 through versions before 9.11.30-S1 Affected: Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.14-S1 Affected: Development Branch 9.17 9.17.0 through versiosn before 9.17.12 |
Date Public
2021-04-28 00:00
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T19:56:11.110Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://kb.isc.org/v1/docs/cve-2021-25215"
},
{
"name": "[oss-security] 20210428 ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"tags": [
"mailing-list",
"x_refsource_MLIST",
"x_transferred"
],
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/1"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"tags": [
"mailing-list",
"x_refsource_MLIST",
"x_transferred"
],
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/2"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"tags": [
"mailing-list",
"x_refsource_MLIST",
"x_transferred"
],
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/3"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"tags": [
"mailing-list",
"x_refsource_MLIST",
"x_transferred"
],
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/4"
},
{
"name": "DSA-4909",
"tags": [
"vendor-advisory",
"x_refsource_DEBIAN",
"x_transferred"
],
"url": "https://www.debian.org/security/2021/dsa-4909"
},
{
"name": "[debian-lts-announce] 20210504 [SECURITY] [DLA 2647-1] bind9 security update",
"tags": [
"mailing-list",
"x_refsource_MLIST",
"x_transferred"
],
"url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html"
},
{
"name": "FEDORA-2021-ace61cbee1",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/"
},
{
"name": "FEDORA-2021-47f23870ec",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://security.netapp.com/advisory/ntap-20210521-0006/"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "BIND9",
"vendor": "ISC",
"versions": [
{
"status": "affected",
"version": "Open Source Branches 9.0 through 9.11 9.0.0 through versions before 9.11.30"
},
{
"status": "affected",
"version": "Open Source Branches 9.12 through 9.16 9.12.0 through versions before 9.16.14"
},
{
"status": "affected",
"version": "Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 through versions before 9.11.30-S1"
},
{
"status": "affected",
"version": "Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.14-S1"
},
{
"status": "affected",
"version": "Development Branch 9.17 9.17.0 through versiosn before 9.17.12"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "ISC would like to thank Siva Kakarla for bringing this vulnerability to our attention."
}
],
"datePublic": "2021-04-28T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "In BIND 9.0.0 -\u003e 9.11.29, 9.12.0 -\u003e 9.16.13, and versions BIND 9.9.3-S1 -\u003e 9.11.29-S1 and 9.16.8-S1 -\u003e 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -\u003e 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9."
}
],
"exploits": [
{
"lang": "en",
"value": "We are not aware of any active exploits."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "DNAME records, described in RFC 6672, provide a way to redirect a subtree of the domain name tree in the DNS. A flaw in the way named processes these records may trigger an attempt to add the same RRset to the ANSWER section more than once. This causes an assertion check in BIND to fail. DNAME records are processed by both authoritative and recursive servers. For authoritative servers, the DNAME record triggering the flaw can be retrieved from a zone database. For servers performing recursion, such a record is processed in the course of a query sent to an authoritative server. Affects BIND 9.0.0 -\u003e 9.11.29, 9.12.0 -\u003e 9.16.13, and versions BIND 9.9.3-S1 -\u003e 9.11.29-S1 and 9.16.8-S1 -\u003e 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -\u003e 9.17.11 of the BIND 9.17 development branch.",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2022-03-08T14:08:28.000Z",
"orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
"shortName": "isc"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://kb.isc.org/v1/docs/cve-2021-25215"
},
{
"name": "[oss-security] 20210428 ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/1"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/2"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/3"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/4"
},
{
"name": "DSA-4909",
"tags": [
"vendor-advisory",
"x_refsource_DEBIAN"
],
"url": "https://www.debian.org/security/2021/dsa-4909"
},
{
"name": "[debian-lts-announce] 20210504 [SECURITY] [DLA 2647-1] bind9 security update",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html"
},
{
"name": "FEDORA-2021-ace61cbee1",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/"
},
{
"name": "FEDORA-2021-47f23870ec",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://security.netapp.com/advisory/ntap-20210521-0006/"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to the patched release most closely related to your current version of BIND:\n\n BIND 9.11.31\n BIND 9.16.15\n BIND 9.17.12\n\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n\n BIND 9.11.31-S1\n BIND 9.16.15-S1"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself",
"workarounds": [
{
"lang": "en",
"value": "No workarounds known."
}
],
"x_generator": {
"engine": "Vulnogram 0.0.9"
},
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security-officer@isc.org",
"DATE_PUBLIC": "2021-04-28T20:20:01.000Z",
"ID": "CVE-2021-25215",
"STATE": "PUBLIC",
"TITLE": "An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "BIND9",
"version": {
"version_data": [
{
"version_name": "Open Source Branches 9.0 through 9.11",
"version_value": "9.0.0 through versions before 9.11.30"
},
{
"version_name": "Open Source Branches 9.12 through 9.16",
"version_value": "9.12.0 through versions before 9.16.14"
},
{
"version_name": "Supported Preview Branches 9.9-S through 9.11-S",
"version_value": "9.9.3-S1 through versions before 9.11.30-S1"
},
{
"version_name": "Supported Preview Branch 9.16-S",
"version_value": "9.16.8-S1 through versions before 9.16.14-S1"
},
{
"version_name": "Development Branch 9.17",
"version_value": "9.17.0 through versiosn before 9.17.12"
}
]
}
}
]
},
"vendor_name": "ISC"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "ISC would like to thank Siva Kakarla for bringing this vulnerability to our attention."
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "In BIND 9.0.0 -\u003e 9.11.29, 9.12.0 -\u003e 9.16.13, and versions BIND 9.9.3-S1 -\u003e 9.11.29-S1 and 9.16.8-S1 -\u003e 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -\u003e 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9."
}
]
},
"exploit": [
{
"lang": "en",
"value": "We are not aware of any active exploits."
}
],
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "DNAME records, described in RFC 6672, provide a way to redirect a subtree of the domain name tree in the DNS. A flaw in the way named processes these records may trigger an attempt to add the same RRset to the ANSWER section more than once. This causes an assertion check in BIND to fail. DNAME records are processed by both authoritative and recursive servers. For authoritative servers, the DNAME record triggering the flaw can be retrieved from a zone database. For servers performing recursion, such a record is processed in the course of a query sent to an authoritative server. Affects BIND 9.0.0 -\u003e 9.11.29, 9.12.0 -\u003e 9.16.13, and versions BIND 9.9.3-S1 -\u003e 9.11.29-S1 and 9.16.8-S1 -\u003e 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -\u003e 9.17.11 of the BIND 9.17 development branch."
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://kb.isc.org/v1/docs/cve-2021-25215",
"refsource": "CONFIRM",
"url": "https://kb.isc.org/v1/docs/cve-2021-25215"
},
{
"name": "[oss-security] 20210428 ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/1"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/2"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/3"
},
{
"name": "[oss-security] 20210429 Re: ISC discloses three BIND vulnerabilities (CVE-2021-25214, CVE-2021-25215, and CVE-2021-25216)",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2021/04/29/4"
},
{
"name": "DSA-4909",
"refsource": "DEBIAN",
"url": "https://www.debian.org/security/2021/dsa-4909"
},
{
"name": "[debian-lts-announce] 20210504 [SECURITY] [DLA 2647-1] bind9 security update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html"
},
{
"name": "FEDORA-2021-ace61cbee1",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/"
},
{
"name": "FEDORA-2021-47f23870ec",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/"
},
{
"name": "https://www.oracle.com/security-alerts/cpuoct2021.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
},
{
"name": "https://security.netapp.com/advisory/ntap-20210521-0006/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20210521-0006/"
},
{
"name": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf",
"refsource": "CONFIRM",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
}
]
},
"solution": [
{
"lang": "en",
"value": "Upgrade to the patched release most closely related to your current version of BIND:\n\n BIND 9.11.31\n BIND 9.16.15\n BIND 9.17.12\n\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n\n BIND 9.11.31-S1\n BIND 9.16.15-S1"
}
],
"source": {
"discovery": "EXTERNAL"
},
"work_around": [
{
"lang": "en",
"value": "No workarounds known."
}
]
}
}
},
"cveMetadata": {
"assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
"assignerShortName": "isc",
"cveId": "CVE-2021-25215",
"datePublished": "2021-04-29T00:55:16.726Z",
"dateReserved": "2021-01-15T00:00:00.000Z",
"dateUpdated": "2024-09-16T22:02:24.791Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2021-25219 (GCVE-0-2021-25219)
Vulnerability from cvelistv5 – Published: 2021-10-27 21:10 – Updated: 2024-09-16 17:33
VLAI
EPSS
VEX
Title
Lame cache can be abused to severely degrade resolver performance
Summary
In BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 -> 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it possible for its internal data structures to grow almost infinitely, which may cause significant delays in client query processing.
Severity
5.3 (Medium)
CWE
- Authoritative-only BIND 9 servers are NOT vulnerable to this flaw. The purpose of a resolver's lame cache is to ensure that if an authoritative server responds to a resolver's query in a specific broken way, subsequent client queries for the same <QNAME, QTYPE> tuple do not trigger further queries to the same server for a configurable amount of time. The lame cache is enabled by setting the "lame-ttl" option in named.conf to a value greater than 0. That option is set to "lame-ttl 600;" in the default configuration, which means the lame cache is enabled by default. A successful attack exploiting this flaw causes a named resolver to spend most of its CPU time on managing and checking the lame cache. This results in client queries being responded to with large delays, and increased likelihood of DNS timeouts on client hosts. Affects BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 -> 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the BIND 9.17 development branch.
Assigner
References
10 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND9 |
Affected:
Open Source Branches 9.3 through 9.11 9.3.0 through versions before 9.11.36
Affected: Open Source Branches 9.12 through 9.16 9.12.0 through versions before 9.16.22 Affected: Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 through versions before 9.11.36-S1 Affected: Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.22-S1 Affected: Development Branch 9.17 9.17.0 through versions before 9.17.19 |
Date Public
2021-10-27 00:00
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T19:56:11.060Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://kb.isc.org/v1/docs/cve-2021-25219"
},
{
"name": "DSA-4994",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://www.debian.org/security/2021/dsa-4994"
},
{
"name": "[debian-lts-announce] 20211102 [SECURITY] [DLA 2807-1] bind9 security update",
"tags": [
"mailing-list",
"x_transferred"
],
"url": "https://lists.debian.org/debian-lts-announce/2021/11/msg00001.html"
},
{
"name": "FEDORA-2021-58e7b873b7",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTKC4E3HUOLYN5IA4EBL4VAQSWG2ZVTX/"
},
{
"name": "FEDORA-2021-39b33260b8",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YGV7SA27CTYLGFJSPUM3V36ZWK7WWDI4/"
},
{
"name": "FEDORA-2021-eb8dab50ba",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EF4NAVRV4H3W4GA3LGGZYUKD3HSJBAVW/"
},
{
"tags": [
"x_transferred"
],
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"tags": [
"x_transferred"
],
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
},
{
"tags": [
"x_transferred"
],
"url": "https://security.netapp.com/advisory/ntap-20211118-0002/"
},
{
"name": "GLSA-202210-25",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://security.gentoo.org/glsa/202210-25"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "BIND9",
"vendor": "ISC",
"versions": [
{
"status": "affected",
"version": "Open Source Branches 9.3 through 9.11 9.3.0 through versions before 9.11.36"
},
{
"status": "affected",
"version": "Open Source Branches 9.12 through 9.16 9.12.0 through versions before 9.16.22"
},
{
"status": "affected",
"version": "Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 through versions before 9.11.36-S1"
},
{
"status": "affected",
"version": "Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.22-S1"
},
{
"status": "affected",
"version": "Development Branch 9.17 9.17.0 through versions before 9.17.19"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "ISC would like to thank Kishore Kumar Kothapalli of Infoblox for bringing this vulnerability to our attention."
}
],
"datePublic": "2021-10-27T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "In BIND 9.3.0 -\u003e 9.11.35, 9.12.0 -\u003e 9.16.21, and versions 9.9.3-S1 -\u003e 9.11.35-S1 and 9.16.8-S1 -\u003e 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -\u003e 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it possible for its internal data structures to grow almost infinitely, which may cause significant delays in client query processing."
}
],
"exploits": [
{
"lang": "en",
"value": "We are not aware of any active exploits."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "Authoritative-only BIND 9 servers are NOT vulnerable to this flaw. The purpose of a resolver\u0027s lame cache is to ensure that if an authoritative server responds to a resolver\u0027s query in a specific broken way, subsequent client queries for the same \u003cQNAME, QTYPE\u003e tuple do not trigger further queries to the same server for a configurable amount of time. The lame cache is enabled by setting the \"lame-ttl\" option in named.conf to a value greater than 0. That option is set to \"lame-ttl 600;\" in the default configuration, which means the lame cache is enabled by default. A successful attack exploiting this flaw causes a named resolver to spend most of its CPU time on managing and checking the lame cache. This results in client queries being responded to with large delays, and increased likelihood of DNS timeouts on client hosts. Affects BIND 9.3.0 -\u003e 9.11.35, 9.12.0 -\u003e 9.16.21, and versions 9.9.3-S1 -\u003e 9.11.35-S1 and 9.16.8-S1 -\u003e 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -\u003e 9.17.18 of the BIND 9.17 development branch.",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2022-10-31T00:00:00.000Z",
"orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
"shortName": "isc"
},
"references": [
{
"url": "https://kb.isc.org/v1/docs/cve-2021-25219"
},
{
"name": "DSA-4994",
"tags": [
"vendor-advisory"
],
"url": "https://www.debian.org/security/2021/dsa-4994"
},
{
"name": "[debian-lts-announce] 20211102 [SECURITY] [DLA 2807-1] bind9 security update",
"tags": [
"mailing-list"
],
"url": "https://lists.debian.org/debian-lts-announce/2021/11/msg00001.html"
},
{
"name": "FEDORA-2021-58e7b873b7",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTKC4E3HUOLYN5IA4EBL4VAQSWG2ZVTX/"
},
{
"name": "FEDORA-2021-39b33260b8",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YGV7SA27CTYLGFJSPUM3V36ZWK7WWDI4/"
},
{
"name": "FEDORA-2021-eb8dab50ba",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EF4NAVRV4H3W4GA3LGGZYUKD3HSJBAVW/"
},
{
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
},
{
"url": "https://security.netapp.com/advisory/ntap-20211118-0002/"
},
{
"name": "GLSA-202210-25",
"tags": [
"vendor-advisory"
],
"url": "https://security.gentoo.org/glsa/202210-25"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to the patched release most closely related to your current version of BIND: BIND 9.11.36, BIND 9.16.22, BIND 9.17.19, or for BIND Supported Preview Edition (a special feature preview branch of BIND provided to eligible ISC support customers): BIND 9.11.36-S1, BIND 9.16.22-S1."
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Lame cache can be abused to severely degrade resolver performance",
"workarounds": [
{
"lang": "en",
"value": "Setting \"lame-ttl 0;\" disables the lame cache and prevents the performance issue. Our research and testing indicate that in the current Internet there is almost no downside to disabling the lame cache."
}
]
}
},
"cveMetadata": {
"assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
"assignerShortName": "isc",
"cveId": "CVE-2021-25219",
"datePublished": "2021-10-27T21:10:10.088Z",
"dateReserved": "2021-01-15T00:00:00.000Z",
"dateUpdated": "2024-09-16T17:33:38.865Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2021-25220 (GCVE-0-2021-25220)
Vulnerability from cvelistv5 – Published: 2022-03-23 12:50 – Updated: 2024-09-16 17:08
VLAI
EPSS
VEX
Title
DNS forwarders - cache poisoning vulnerability
Summary
BIND 9.11.0 -> 9.11.36 9.12.0 -> 9.16.26 9.17.0 -> 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 -> 9.11.36-S1 9.16.8-S1 -> 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including Supported Preview Editions - are also believed to be affected but have not been tested as they are EOL. The cache could become poisoned with incorrect records leading to queries being made to the wrong servers, which might also result in false information being returned to clients.
Severity
6.8 (Medium)
CWE
- When using forwarders, bogus NS records supplied by, or via, those forwarders may be cached and used by named if it needs to recurse for any reason, causing it to obtain and pass on potentially incorrect answers. Some examples of configurations that will be vulnerable are: Resolvers using per zone or global forwarding with forward first (forward first is the default). Resolvers not using global forwarding, but with per-zone forwarding with either forward first (the default) or forward only. Resolvers configured with global forwarding along with zone statements that disable forwarding for part of the DNS namespace. Authoritative-only BIND 9 servers are not vulnerable to this flaw. BIND 9.11.0 -> 9.11.36 9.12.0 -> 9.16.26 9.17.0 -> 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 -> 9.11.36-S1 9.16.8-S1 -> 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including Supported Preview Editions - are also believed to be affected but have not been tested as they are EOL.
Assigner
References
10 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND |
Affected:
Open Source Branch 9.11 9.11.0 through versions before 9.11.37
Affected: Development Branch 9.17 BIND 9.17 all version Affected: Open Source Branch 9.12-16 9.12.0 through versions before 9.16.27 Affected: Open Source Branch 9.18 9.18.0 Affected: Supported Preview Branch 9.11-S 9.11.0-S through versions before 9.11.37-S Affected: Supported Preview Branch 9.16-S 9.16.0-S through versions before 9.16.27-S |
Date Public
2022-03-16 00:00
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T19:56:11.083Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://kb.isc.org/v1/docs/cve-2021-25220"
},
{
"name": "FEDORA-2022-14e36aac0c",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYD7US4HZRFUGAJ66ZTHFBYVP5N3OQBY/"
},
{
"name": "FEDORA-2022-042d9c6146",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/API7U5E7SX7BAAVFNW366FFJGD6NZZKV/"
},
{
"tags": [
"x_transferred"
],
"url": "https://security.netapp.com/advisory/ntap-20220408-0001/"
},
{
"name": "FEDORA-2022-a88218de5c",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5VX3I2U3ICOIEI5Y7OYA6CHOLFMNH3YQ/"
},
{
"name": "FEDORA-2022-05918f0838",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SXT7247QTKNBQ67MNRGZD23ADXU6E5U/"
},
{
"name": "FEDORA-2022-3f293290c3",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DE3UAVCPUMAKG27ZL5YXSP2C3RIOW3JZ/"
},
{
"tags": [
"x_transferred"
],
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf"
},
{
"name": "GLSA-202210-25",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://security.gentoo.org/glsa/202210-25"
},
{
"tags": [
"x_transferred"
],
"url": "https://supportportal.juniper.net/s/article/2022-10-Security-Bulletin-Junos-OS-SRX-Series-Cache-poisoning-vulnerability-in-BIND-used-by-DNS-Proxy-CVE-2021-25220?language=en_US"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "BIND",
"vendor": "ISC",
"versions": [
{
"status": "affected",
"version": "Open Source Branch 9.11 9.11.0 through versions before 9.11.37"
},
{
"status": "affected",
"version": "Development Branch 9.17 BIND 9.17 all version"
},
{
"status": "affected",
"version": "Open Source Branch 9.12-16 9.12.0 through versions before 9.16.27"
},
{
"status": "affected",
"version": "Open Source Branch 9.18 9.18.0"
},
{
"status": "affected",
"version": "Supported Preview Branch 9.11-S 9.11.0-S through versions before 9.11.37-S"
},
{
"status": "affected",
"version": "Supported Preview Branch 9.16-S 9.16.0-S through versions before 9.16.27-S"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "ISC would like to thank Xiang Li, Baojun Liu, and Chaoyi Lu from Network and Information Security Lab, Tsinghua University and Changgen Zou from Qi An Xin Group Corp. for discovering and reporting this issue."
}
],
"datePublic": "2022-03-16T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "BIND 9.11.0 -\u003e 9.11.36 9.12.0 -\u003e 9.16.26 9.17.0 -\u003e 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 -\u003e 9.11.36-S1 9.16.8-S1 -\u003e 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including Supported Preview Editions - are also believed to be affected but have not been tested as they are EOL. The cache could become poisoned with incorrect records leading to queries being made to the wrong servers, which might also result in false information being returned to clients."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "When using forwarders, bogus NS records supplied by, or via, those forwarders may be cached and used by named if it needs to recurse for any reason, causing it to obtain and pass on potentially incorrect answers. Some examples of configurations that will be vulnerable are: Resolvers using per zone or global forwarding with forward first (forward first is the default). Resolvers not using global forwarding, but with per-zone forwarding with either forward first (the default) or forward only. Resolvers configured with global forwarding along with zone statements that disable forwarding for part of the DNS namespace. Authoritative-only BIND 9 servers are not vulnerable to this flaw. BIND 9.11.0 -\u003e 9.11.36 9.12.0 -\u003e 9.16.26 9.17.0 -\u003e 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 -\u003e 9.11.36-S1 9.16.8-S1 -\u003e 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including Supported Preview Editions - are also believed to be affected but have not been tested as they are EOL.",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-07-23T00:00:00.000Z",
"orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
"shortName": "isc"
},
"references": [
{
"url": "https://kb.isc.org/v1/docs/cve-2021-25220"
},
{
"name": "FEDORA-2022-14e36aac0c",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYD7US4HZRFUGAJ66ZTHFBYVP5N3OQBY/"
},
{
"name": "FEDORA-2022-042d9c6146",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/API7U5E7SX7BAAVFNW366FFJGD6NZZKV/"
},
{
"url": "https://security.netapp.com/advisory/ntap-20220408-0001/"
},
{
"name": "FEDORA-2022-a88218de5c",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5VX3I2U3ICOIEI5Y7OYA6CHOLFMNH3YQ/"
},
{
"name": "FEDORA-2022-05918f0838",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SXT7247QTKNBQ67MNRGZD23ADXU6E5U/"
},
{
"name": "FEDORA-2022-3f293290c3",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DE3UAVCPUMAKG27ZL5YXSP2C3RIOW3JZ/"
},
{
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf"
},
{
"name": "GLSA-202210-25",
"tags": [
"vendor-advisory"
],
"url": "https://security.gentoo.org/glsa/202210-25"
},
{
"url": "https://supportportal.juniper.net/s/article/2022-10-Security-Bulletin-Junos-OS-SRX-Series-Cache-poisoning-vulnerability-in-BIND-used-by-DNS-Proxy-CVE-2021-25220?language=en_US"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to the patched release most closely related to your current version of BIND:\n BIND 9.11.37\n BIND 9.16.27\n BIND 9.18.1\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n BIND 9.11.37-S1\n BIND 9.16.27-S1"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "DNS forwarders - cache poisoning vulnerability",
"workarounds": [
{
"lang": "en",
"value": "If applicable, modify your configuration to either remove all forwarding or all possibility of recursion. Depending on your use-case, it may be possible to use other zone types to replace forward zones.\nActive exploits: We are not aware of any active exploits."
}
],
"x_generator": {
"engine": "Vulnogram 0.0.9"
}
}
},
"cveMetadata": {
"assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
"assignerShortName": "isc",
"cveId": "CVE-2021-25220",
"datePublished": "2022-03-23T12:50:10.367Z",
"dateReserved": "2021-01-15T00:00:00.000Z",
"dateUpdated": "2024-09-16T17:08:54.143Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…
Loading…