usn-5959-1
Vulnerability from osv_ubuntu
Published
2023-03-16 07:06
Modified
2026-04-22 07:37
Summary
krb5 vulnerabilities
Details
It was discovered that Kerberos incorrectly handled memory when processing KDC data, which could lead to a NULL pointer dereference. An attacker could possibly use this issue to cause a denial of service or have other unspecified impacts. (CVE-2021-36222, CVE-2021-37750)
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-36222",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-37750",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "krb5-admin-server",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "krb5-gss-samples",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "krb5-k5tls",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "krb5-kdc",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "krb5-kdc-ldap",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "krb5-kpropd",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "krb5-locales",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "krb5-multidev",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "krb5-otp",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "krb5-pkinit",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "krb5-user",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "libgssapi-krb5-2",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "libgssrpc4",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "libk5crypto3",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "libkadm5clnt-mit11",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "libkadm5srv-mit11",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "libkdb5-9",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "libkrad0",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "libkrb5-3",
"binary_version": "1.16-2ubuntu0.4"
},
{
"binary_name": "libkrb5support0",
"binary_version": "1.16-2ubuntu0.4"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "krb5",
"purl": "pkg:deb/ubuntu/krb5@1.16-2ubuntu0.4?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.16-2ubuntu0.4"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.15.1-2",
"1.16-2",
"1.16-2build1",
"1.16-2ubuntu0.1",
"1.16-2ubuntu0.2",
"1.16-2ubuntu0.3"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-36222",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-37750",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "krb5-admin-server",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "krb5-gss-samples",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "krb5-k5tls",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "krb5-kdc",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "krb5-kdc-ldap",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "krb5-kpropd",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "krb5-locales",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "krb5-multidev",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "krb5-otp",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "krb5-pkinit",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "krb5-user",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "libgssapi-krb5-2",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "libgssrpc4",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "libk5crypto3",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "libkadm5clnt-mit11",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "libkadm5srv-mit11",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "libkdb5-9",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "libkrad0",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "libkrb5-3",
"binary_version": "1.17-6ubuntu4.3"
},
{
"binary_name": "libkrb5support0",
"binary_version": "1.17-6ubuntu4.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "krb5",
"purl": "pkg:deb/ubuntu/krb5@1.17-6ubuntu4.3?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.17-6ubuntu4.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.17-6",
"1.17-6ubuntu3",
"1.17-6ubuntu4",
"1.17-6ubuntu4.1",
"1.17-6ubuntu4.2"
]
}
],
"aliases": [],
"details": "It was discovered that Kerberos incorrectly handled memory when processing\nKDC data, which could lead to a NULL pointer dereference. An attacker could\npossibly use this issue to cause a denial of service or have other\nunspecified impacts. (CVE-2021-36222, CVE-2021-37750)\n",
"id": "USN-5959-1",
"modified": "2026-04-22T07:37:04Z",
"published": "2023-03-16T07:06:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5959-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-36222"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-37750"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "krb5 vulnerabilities",
"upstream": [
"UBUNTU-CVE-2021-36222",
"UBUNTU-CVE-2021-37750"
]
}
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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.
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