Common Weakness Enumeration
CWE-606
AllowedUnchecked Input for Loop Condition
Abstraction: Base · Status: Draft
The product does not properly check inputs that are used for loop conditions, potentially leading to a denial of service or other consequences because of excessive looping.
53 vulnerabilities reference this CWE, most recent first.
CVE-2023-3446 (GCVE-0-2023-3446)
Vulnerability from cvelistv5 – Published: 2023-07-19 11:31 – Updated: 2025-04-23 16:20
VLAI
EPSS
VEX
Title
Excessive time spent checking DH keys and parameters
Summary
Issue summary: Checking excessively long DH keys or parameters may be very slow.
Impact summary: Applications that use the functions DH_check(), DH_check_ex()
or EVP_PKEY_param_check() to check a DH key or DH parameters may experience long
delays. Where the key or parameters that are being checked have been obtained
from an untrusted source this may lead to a Denial of Service.
The function DH_check() performs various checks on DH parameters. One of those
checks confirms that the modulus ('p' parameter) is not too large. Trying to use
a very large modulus is slow and OpenSSL will not normally use a modulus which
is over 10,000 bits in length.
However the DH_check() function checks numerous aspects of the key or parameters
that have been supplied. Some of those checks use the supplied modulus value
even if it has already been found to be too large.
An application that calls DH_check() and supplies a key or parameters obtained
from an untrusted source could be vulernable to a Denial of Service attack.
The function DH_check() is itself called by a number of other OpenSSL functions.
An application calling any of those other functions may similarly be affected.
The other functions affected by this are DH_check_ex() and
EVP_PKEY_param_check().
Also vulnerable are the OpenSSL dhparam and pkeyparam command line applications
when using the '-check' option.
The OpenSSL SSL/TLS implementation is not affected by this issue.
The OpenSSL 3.0 and 3.1 FIPS providers are not affected by this issue.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-606 - Unchecked Input for Loop Condition
Assigner
References
13 references
| URL | Tags |
|---|---|
| https://www.openssl.org/news/secadv/20230719.txt | vendor-advisory |
| https://git.openssl.org/gitweb/?p=openssl.git;a=c… | patch |
| https://git.openssl.org/gitweb/?p=openssl.git;a=c… | patch |
| https://git.openssl.org/gitweb/?p=openssl.git;a=c… | patch |
| https://git.openssl.org/gitweb/?p=openssl.git;a=c… | patch |
| http://www.openwall.com/lists/oss-security/2023/07/19/4 | x_transferred |
| http://www.openwall.com/lists/oss-security/2023/07/19/5 | x_transferred |
| http://www.openwall.com/lists/oss-security/2023/07/19/6 | x_transferred |
| http://www.openwall.com/lists/oss-security/2023/07/31/1 | x_transferred |
| https://security.netapp.com/advisory/ntap-2023080… | x_transferred |
| https://lists.debian.org/debian-lts-announce/2023… | x_transferred |
| https://security.gentoo.org/glsa/202402-08 | x_transferred |
| http://www.openwall.com/lists/oss-security/2024/05/16/1 | x_transferred |
Impacted products
Date Public
2023-07-13 00:00
Credits
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CVE-2022-3252 (GCVE-0-2022-3252)
Vulnerability from cvelistv5 – Published: 2022-09-21 18:45 – Updated: 2024-08-03 01:07
VLAI
EPSS
VEX
Summary
Improper detection of complete HTTP body decompression SwiftNIO Extras provides a pair of helpers for transparently decompressing received HTTP request or response bodies. These two objects (HTTPRequestDecompressor and HTTPResponseDecompressor) both failed to detect when the decompressed body was considered complete. If trailing junk data was appended to the HTTP message body, the code would repeatedly attempt to decompress this data and fail. This would lead to an infinite loop making no forward progress, leading to livelock of the system and denial-of-service. This issue can be triggered by any attacker capable of sending a compressed HTTP message. Most commonly this is HTTP servers, as compressed HTTP messages cannot be negotiated for HTTP requests, but it is possible that users have configured decompression for HTTP requests as well. The attack is low effort, and likely to be reached without requiring any privilege or system access. The impact on availability is high: the process immediately becomes unavailable but does not immediately crash, meaning that it is possible for the process to remain in this state until an administrator intervenes or an automated circuit breaker fires. If left unchecked this issue will very slowly exhaust memory resources due to repeated buffer allocation, but the buffers are not written to and so it is possible that the processes will not terminate for quite some time. This risk can be mitigated by removing transparent HTTP message decompression. The issue is fixed by correctly detecting the termination of the compressed body as reported by zlib and refusing to decompress further data. The issue was found by Vojtech Rylko (https://github.com/vojtarylko) and reported publicly on GitHub.
Severity
No CVSS data available.
CWE
- CWE-606 - Unchecked Input for Loop Condition
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/apple/swift-nio-extras/securit… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Swift Project | SwiftNIO Extras |
Affected:
unspecified , < 1.14.0
(custom)
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CVE-2019-25624 (GCVE-0-2019-25624)
Vulnerability from cvelistv5 – Published: 2026-03-23 13:48 – Updated: 2026-03-24 15:14
VLAI
EPSS
VEX
Title
Liquid Studio 2.17 Denial of Service via Malformed Input
Summary
Liquid Studio 2.17 contains a denial of service vulnerability that allows local attackers to crash the application by providing malformed input through the keyboard interface. Attackers can trigger the vulnerability by entering arbitrary characters during application runtime, causing the application to become unresponsive or terminate abnormally.
Severity
6.2 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-606 - Unchecked Input for Loop Condition
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46128 | exploit |
| http://www.pixarra.com/ | product |
| http://www.pixarra.com/uploads/9/4/6/3/94635436/t… | product |
| https://www.vulncheck.com/advisories/liquid-studi… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Pixarra | Liquid Studio |
Affected:
2.17
|
Date Public
2019-01-11 00:00
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"value": "Liquid Studio 2.17 contains a denial of service vulnerability that allows local attackers to crash the application by providing malformed input through the keyboard interface. Attackers can trigger the vulnerability by entering arbitrary characters during application runtime, causing the application to become unresponsive or terminate abnormally."
}
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"metrics": [
{
"cvssV4_0": {
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"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "LOCAL",
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
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"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
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"description": "Unchecked Input for Loop Condition",
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"references": [
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"name": "ExploitDB-46128",
"tags": [
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{
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"url": "http://www.pixarra.com/"
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"url": "http://www.pixarra.com/uploads/9/4/6/3/94635436/tbliquidstudio_install.exe"
},
{
"name": "VulnCheck Advisory: Liquid Studio 2.17 Denial of Service via Malformed Input",
"tags": [
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"url": "https://www.vulncheck.com/advisories/liquid-studio-denial-of-service-via-malformed-input"
}
],
"title": "Liquid Studio 2.17 Denial of Service via Malformed Input",
"x_generator": {
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}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2019-25624",
"datePublished": "2026-03-23T13:48:39.597Z",
"dateReserved": "2026-03-23T13:46:26.421Z",
"dateUpdated": "2026-03-24T15:14:04.055Z",
"state": "PUBLISHED"
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GHSA-2CJ7-MG3X-9MHQ
Vulnerability from github – Published: 2023-11-06 18:30 – Updated: 2026-05-12 12:31
VLAI
Details
Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow.
Impact summary: Applications that use the functions DH_generate_key() to generate an X9.42 DH key may experience long delays. Likewise, applications that use DH_check_pub_key(), DH_check_pub_key_ex() or EVP_PKEY_public_check() to check an X9.42 DH key or X9.42 DH parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an untrusted source this may lead to a Denial of Service.
While DH_check() performs all the necessary checks (as of CVE-2023-3817), DH_check_pub_key() doesn't make any of these checks, and is therefore vulnerable for excessively large P and Q parameters.
Likewise, while DH_generate_key() performs a check for an excessively large P, it doesn't check for an excessively large Q.
An application that calls DH_generate_key() or DH_check_pub_key() and supplies a key or parameters obtained from an untrusted source could be vulnerable to a Denial of Service attack.
DH_generate_key() and DH_check_pub_key() are also called by a number of other OpenSSL functions. An application calling any of those other functions may similarly be affected. The other functions affected by this are DH_check_pub_key_ex(), EVP_PKEY_public_check(), and EVP_PKEY_generate().
Also vulnerable are the OpenSSL pkey command line application when using the "-pubcheck" option, as well as the OpenSSL genpkey command line application.
The OpenSSL SSL/TLS implementation is not affected by this issue.
The OpenSSL 3.0 and 3.1 FIPS providers are not affected by this issue.
Severity
7.5 (High)
{
"affected": [],
"aliases": [
"CVE-2023-5678"
],
"database_specific": {
"cwe_ids": [
"CWE-606",
"CWE-754"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-11-06T16:15:42Z",
"severity": "HIGH"
},
"details": "Issue summary: Generating excessively long X9.42 DH keys or checking\nexcessively long X9.42 DH keys or parameters may be very slow.\n\nImpact summary: Applications that use the functions DH_generate_key() to\ngenerate an X9.42 DH key may experience long delays. Likewise, applications\nthat use DH_check_pub_key(), DH_check_pub_key_ex() or EVP_PKEY_public_check()\nto check an X9.42 DH key or X9.42 DH parameters may experience long delays.\nWhere the key or parameters that are being checked have been obtained from\nan untrusted source this may lead to a Denial of Service.\n\nWhile DH_check() performs all the necessary checks (as of CVE-2023-3817),\nDH_check_pub_key() doesn\u0027t make any of these checks, and is therefore\nvulnerable for excessively large P and Q parameters.\n\nLikewise, while DH_generate_key() performs a check for an excessively large\nP, it doesn\u0027t check for an excessively large Q.\n\nAn application that calls DH_generate_key() or DH_check_pub_key() and\nsupplies a key or parameters obtained from an untrusted source could be\nvulnerable to a Denial of Service attack.\n\nDH_generate_key() and DH_check_pub_key() are also called by a number of\nother OpenSSL functions. An application calling any of those other\nfunctions may similarly be affected. The other functions affected by this\nare DH_check_pub_key_ex(), EVP_PKEY_public_check(), and EVP_PKEY_generate().\n\nAlso vulnerable are the OpenSSL pkey command line application when using the\n\"-pubcheck\" option, as well as the OpenSSL genpkey command line application.\n\nThe OpenSSL SSL/TLS implementation is not affected by this issue.\n\nThe OpenSSL 3.0 and 3.1 FIPS providers are not affected by this issue.",
"id": "GHSA-2cj7-mg3x-9mhq",
"modified": "2026-05-12T12:31:34Z",
"published": "2023-11-06T18:30:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-5678"
},
{
"type": "WEB",
"url": "https://www.openssl.org/news/secadv/20231106.txt"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20231130-0010"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/11/msg00000.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00033.html"
},
{
"type": "WEB",
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=ddeb4b6c6d527e54ce9a99cba785c0f7776e54b6"
},
{
"type": "WEB",
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=db925ae2e65d0d925adef429afc37f75bd1c2017"
},
{
"type": "WEB",
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=710fee740904b6290fef0dd5536fbcedbc38ff0c"
},
{
"type": "WEB",
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=34efaef6c103d636ab507a0cc34dca4d3aecc055"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-915275.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-794697.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-769027.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-613116.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-556635.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-341067.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-331112.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-277137.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-128433.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-093430.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/11/06/2"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2024/03/11/1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2JCM-HQ8R-84WX
Vulnerability from github – Published: 2026-06-11 00:32 – Updated: 2026-07-01 15:34
VLAI
Details
kafka-python prior to 2.3.2 contains a denial-of-service vulnerability in SCRAM authentication handling that allows a malicious or machine-in-the-middle broker to freeze the client event loop by supplying an excessively large iteration count. In scram.py, ScramClient.process_server_first_message() passes the broker-controlled SCRAM iteration count directly to hashlib.pbkdf2_hmac() without validation, blocking producer sends, consumer polls, admin operations, and heartbeats, which can cause consumer group eviction and repeated reconnect failures.
Severity
{
"affected": [],
"aliases": [
"CVE-2026-10143"
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-606"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-10T22:16:55Z",
"severity": "HIGH"
},
"details": "kafka-python prior to 2.3.2 contains a denial-of-service vulnerability in SCRAM authentication handling that allows a malicious or machine-in-the-middle broker to freeze the client event loop by supplying an excessively large iteration count. In scram.py, ScramClient.process_server_first_message() passes the broker-controlled SCRAM iteration count directly to hashlib.pbkdf2_hmac() without validation, blocking producer sends, consumer polls, admin operations, and heartbeats, which can cause consumer group eviction and repeated reconnect failures.",
"id": "GHSA-2jcm-hq8r-84wx",
"modified": "2026-07-01T15:34:53Z",
"published": "2026-06-11T00:32:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-10143"
},
{
"type": "WEB",
"url": "https://github.com/dpkp/kafka-python/pull/3019"
},
{
"type": "WEB",
"url": "https://github.com/dpkp/kafka-python/pull/3026"
},
{
"type": "WEB",
"url": "https://github.com/dpkp/kafka-python/commit/6e4831444f972d169cdd11f5c8d50333cea3f19b"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:28571"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:30076"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:33683"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-10143"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2487722"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-10143.json"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/kafka-python-prior-to-dos-via-scram-iteration-count-in-scram-py"
}
],
"schema_version": "1.4.0",
"severity": [
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"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-2PJM-RCHF-GXMP
Vulnerability from github – Published: 2026-05-20 15:35 – Updated: 2026-05-20 15:35
VLAI
Details
An unbounded resend loop vulnerability exists in the BIND 9 resolver state machine during bad-server handling, enabling a remote unauthenticated attacker to cause severe resource exhaustion by sending queries that trigger specific retry conditions. This issue affects BIND 9 versions 9.18.36 through 9.18.48, 9.20.8 through 9.20.22, 9.21.7 through 9.21.21, 9.18.36-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
Severity
5.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2026-5950"
],
"database_specific": {
"cwe_ids": [
"CWE-606"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-20T13:16:40Z",
"severity": "MODERATE"
},
"details": "An unbounded resend loop vulnerability exists in the BIND 9 resolver state machine during bad-server handling, enabling a remote unauthenticated attacker to cause severe resource exhaustion by sending queries that trigger specific retry conditions.\nThis issue affects BIND 9 versions 9.18.36 through 9.18.48, 9.20.8 through 9.20.22, 9.21.7 through 9.21.21, 9.18.36-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.",
"id": "GHSA-2pjm-rchf-gxmp",
"modified": "2026-05-20T15:35:33Z",
"published": "2026-05-20T15:35:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5950"
},
{
"type": "WEB",
"url": "https://downloads.isc.org/isc/bind9/9.18.49"
},
{
"type": "WEB",
"url": "https://downloads.isc.org/isc/bind9/9.20.23"
},
{
"type": "WEB",
"url": "https://downloads.isc.org/isc/bind9/9.21.22"
},
{
"type": "WEB",
"url": "https://kb.isc.org/docs/cve-2026-5950"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-2RV5-PWGG-7F73
Vulnerability from github – Published: 2026-03-23 15:30 – Updated: 2026-03-23 15:30
VLAI
Details
Liquid Studio 2.17 contains a denial of service vulnerability that allows local attackers to crash the application by providing malformed input through the keyboard interface. Attackers can trigger the vulnerability by entering arbitrary characters during application runtime, causing the application to become unresponsive or terminate abnormally.
Severity
6.2 (Medium)
{
"affected": [],
"aliases": [
"CVE-2019-25624"
],
"database_specific": {
"cwe_ids": [
"CWE-606"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-23T14:16:26Z",
"severity": "MODERATE"
},
"details": "Liquid Studio 2.17 contains a denial of service vulnerability that allows local attackers to crash the application by providing malformed input through the keyboard interface. Attackers can trigger the vulnerability by entering arbitrary characters during application runtime, causing the application to become unresponsive or terminate abnormally.",
"id": "GHSA-2rv5-pwgg-7f73",
"modified": "2026-03-23T15:30:44Z",
"published": "2026-03-23T15:30:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-25624"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/46128"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/liquid-studio-denial-of-service-via-malformed-input"
},
{
"type": "WEB",
"url": "http://www.pixarra.com"
},
{
"type": "WEB",
"url": "http://www.pixarra.com/uploads/9/4/6/3/94635436/tbliquidstudio_install.exe"
}
],
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"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-39W3-FG6Q-3VW3
Vulnerability from github – Published: 2026-03-10 18:31 – Updated: 2026-03-10 18:31
VLAI
Details
Due to an uncontrolled resource consumption (Denial of Service) vulnerability, an authenticated attacker with regular user privileges and network access can repeatedly invoke a remote-enabled function module with an excessively large loop-control parameter. This triggers prolonged loop execution that consumes excessive system resources, potentially rendering the system unavailable. Successful exploitation results in a denial-of-service condition that impacts availability, while confidentiality and integrity remain unaffected.
Severity
7.7 (High)
{
"affected": [],
"aliases": [
"CVE-2026-27689"
],
"database_specific": {
"cwe_ids": [
"CWE-606"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-10T17:38:11Z",
"severity": "HIGH"
},
"details": "Due to an uncontrolled resource consumption (Denial of Service) vulnerability, an authenticated attacker with regular user privileges and network access can repeatedly invoke a remote-enabled function module with an excessively large loop-control parameter. This triggers prolonged loop execution that consumes excessive system resources, potentially rendering the system unavailable. Successful exploitation results in a denial-of-service condition that impacts availability, while confidentiality and integrity remain unaffected.",
"id": "GHSA-39w3-fg6q-3vw3",
"modified": "2026-03-10T18:31:17Z",
"published": "2026-03-10T18:31:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27689"
},
{
"type": "WEB",
"url": "https://me.sap.com/notes/3719502"
},
{
"type": "WEB",
"url": "https://url.sap/sapsecuritypatchday"
}
],
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"type": "CVSS_V3"
}
]
}
GHSA-3P3X-VG38-6G9Q
Vulnerability from github – Published: 2023-07-19 12:31 – Updated: 2024-06-10 18:30
VLAI
Details
Issue summary: Checking excessively long DH keys or parameters may be very slow.
Impact summary: Applications that use the functions DH_check(), DH_check_ex() or EVP_PKEY_param_check() to check a DH key or DH parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an untrusted source this may lead to a Denial of Service.
The function DH_check() performs various checks on DH parameters. One of those checks confirms that the modulus ('p' parameter) is not too large. Trying to use a very large modulus is slow and OpenSSL will not normally use a modulus which is over 10,000 bits in length.
However the DH_check() function checks numerous aspects of the key or parameters that have been supplied. Some of those checks use the supplied modulus value even if it has already been found to be too large.
An application that calls DH_check() and supplies a key or parameters obtained from an untrusted source could be vulernable to a Denial of Service attack.
The function DH_check() is itself called by a number of other OpenSSL functions. An application calling any of those other functions may similarly be affected. The other functions affected by this are DH_check_ex() and EVP_PKEY_param_check().
Also vulnerable are the OpenSSL dhparam and pkeyparam command line applications when using the '-check' option.
The OpenSSL SSL/TLS implementation is not affected by this issue. The OpenSSL 3.0 and 3.1 FIPS providers are not affected by this issue.
Severity
5.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2023-3446"
],
"database_specific": {
"cwe_ids": [
"CWE-1333",
"CWE-606"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-19T12:15:10Z",
"severity": "MODERATE"
},
"details": "Issue summary: Checking excessively long DH keys or parameters may be very slow.\n\nImpact summary: Applications that use the functions DH_check(), DH_check_ex()\nor EVP_PKEY_param_check() to check a DH key or DH parameters may experience long\ndelays. Where the key or parameters that are being checked have been obtained\nfrom an untrusted source this may lead to a Denial of Service.\n\nThe function DH_check() performs various checks on DH parameters. One of those\nchecks confirms that the modulus (\u0027p\u0027 parameter) is not too large. Trying to use\na very large modulus is slow and OpenSSL will not normally use a modulus which\nis over 10,000 bits in length.\n\nHowever the DH_check() function checks numerous aspects of the key or parameters\nthat have been supplied. Some of those checks use the supplied modulus value\neven if it has already been found to be too large.\n\nAn application that calls DH_check() and supplies a key or parameters obtained\nfrom an untrusted source could be vulernable to a Denial of Service attack.\n\nThe function DH_check() is itself called by a number of other OpenSSL functions.\nAn application calling any of those other functions may similarly be affected.\nThe other functions affected by this are DH_check_ex() and\nEVP_PKEY_param_check().\n\nAlso vulnerable are the OpenSSL dhparam and pkeyparam command line applications\nwhen using the \u0027-check\u0027 option.\n\nThe OpenSSL SSL/TLS implementation is not affected by this issue.\nThe OpenSSL 3.0 and 3.1 FIPS providers are not affected by this issue.",
"id": "GHSA-3p3x-vg38-6g9q",
"modified": "2024-06-10T18:30:45Z",
"published": "2023-07-19T12:31:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3446"
},
{
"type": "WEB",
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1fa20cf2f506113c761777127a38bce5068740eb"
},
{
"type": "WEB",
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=8780a896543a654e757db1b9396383f9d8095528"
},
{
"type": "WEB",
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=9a0a4d3c1e7138915563c0df4fe6a3f9377b839c"
},
{
"type": "WEB",
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fc9867c1e03c22ebf56943be205202e576aabf23"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00019.html"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202402-08"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20230803-0011"
},
{
"type": "WEB",
"url": "https://www.openssl.org/news/secadv/20230719.txt"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/07/19/4"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/07/19/5"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/07/19/6"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2023/07/31/1"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2024/05/16/1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-4279-Q6MJ-392R
Vulnerability from github – Published: 2026-06-03 00:30 – Updated: 2026-07-15 12:31
VLAI
Details
(*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name (SAN) entries. This caused strings.Split(host, ".") to execute repeatedly on the same input hostname. With a large DNS SAN list, verification costs scaled quadratically based on the number of SAN entries multiplied by the hostname's label count. Because x509.Verify validates hostnames before building the certificate chain, this overhead occurred even for untrusted certificates.
Severity
6.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2026-27145"
],
"database_specific": {
"cwe_ids": [
"CWE-606"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-02T23:16:35Z",
"severity": "MODERATE"
},
"details": "(*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name (SAN) entries. This caused strings.Split(host, \".\") to execute repeatedly on the same input hostname. With a large DNS SAN list, verification costs scaled quadratically based on the number of SAN entries multiplied by the hostname\u0027s label count. Because x509.Verify validates hostnames before building the certificate chain, this overhead occurred even for untrusted certificates.",
"id": "GHSA-4279-q6mj-392r",
"modified": "2026-07-15T12:31:48Z",
"published": "2026-06-03T00:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27145"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27145.json"
},
{
"type": "WEB",
"url": "https://pkg.go.dev/vuln/GO-2026-5037"
},
{
"type": "WEB",
"url": "https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw"
},
{
"type": "WEB",
"url": "https://go.dev/issue/79694"
},
{
"type": "WEB",
"url": "https://go.dev/cl/783621"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2484207"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-27145"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:39573"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:39005"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:38995"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36797"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36648"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36317"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:35832"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:34359"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:34357"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:33574"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:29981"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation
Implementation
Do not use user-controlled data for loop conditions.
Mitigation
Implementation
Perform input validation.
No CAPEC attack patterns related to this CWE.