USN-6467-2 (UBUNTU-CVE-2023-36054)
Vulnerability from osv_ubuntu – Published: 2023-11-06 09:36 – Updated: 2026-04-27 14:11 – Source website
VLAI
Summary
krb5 vulnerability
Details
USN-6467-1 fixed a vulnerability in Kerberos. This update provides the corresponding update for Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 23.04.
Original advisory details:
Robert Morris discovered that Kerberos did not properly handle memory access when processing RPC data through kadmind, which could lead to the freeing of uninitialized memory. An authenticated remote attacker could possibly use this issue to cause kadmind to crash, resulting in a denial of service.
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2023-36054",
"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": "1.17-6ubuntu4.4"
},
{
"binary_name": "krb5-gss-samples",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "krb5-k5tls",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "krb5-kdc",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "krb5-kdc-ldap",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "krb5-kpropd",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "krb5-locales",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "krb5-multidev",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "krb5-otp",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "krb5-pkinit",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "krb5-user",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "libgssapi-krb5-2",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "libgssrpc4",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "libk5crypto3",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "libkadm5clnt-mit11",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "libkadm5srv-mit11",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "libkdb5-9",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "libkrad0",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "libkrb5-3",
"binary_version": "1.17-6ubuntu4.4"
},
{
"binary_name": "libkrb5support0",
"binary_version": "1.17-6ubuntu4.4"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "krb5",
"purl": "pkg:deb/ubuntu/krb5@1.17-6ubuntu4.4?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.17-6ubuntu4.4"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.17-6",
"1.17-6ubuntu3",
"1.17-6ubuntu4",
"1.17-6ubuntu4.1",
"1.17-6ubuntu4.2",
"1.17-6ubuntu4.3"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2023-36054",
"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:22.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "krb5-admin-server",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "krb5-gss-samples",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "krb5-k5tls",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "krb5-kdc",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "krb5-kdc-ldap",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "krb5-kpropd",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "krb5-locales",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "krb5-multidev",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "krb5-otp",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "krb5-pkinit",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "krb5-user",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "libgssapi-krb5-2",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "libgssrpc4",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "libk5crypto3",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "libkadm5clnt-mit12",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "libkadm5srv-mit12",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "libkdb5-10",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "libkrad0",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "libkrb5-3",
"binary_version": "1.19.2-2ubuntu0.3"
},
{
"binary_name": "libkrb5support0",
"binary_version": "1.19.2-2ubuntu0.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "krb5",
"purl": "pkg:deb/ubuntu/krb5@1.19.2-2ubuntu0.3?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.19.2-2ubuntu0.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.18.3-6",
"1.18.3-7",
"1.19.2-0ubuntu1",
"1.19.2-1",
"1.19.2-2",
"1.19.2-2ubuntu0.1",
"1.19.2-2ubuntu0.2"
]
}
],
"aliases": [],
"details": "USN-6467-1 fixed a vulnerability in Kerberos. This update provides the\ncorresponding update for Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu\n23.04.\n\nOriginal advisory details:\n\n Robert Morris discovered that Kerberos did not properly handle memory\n access when processing RPC data through kadmind, which could lead to the\n freeing of uninitialized memory. An authenticated remote attacker could\n possibly use this issue to cause kadmind to crash, resulting in a denial\n of service.\n",
"id": "USN-6467-2",
"modified": "2026-04-27T14:11:31Z",
"published": "2023-11-06T09:36:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-6467-2"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-36054"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "krb5 vulnerability",
"upstream": [
"UBUNTU-CVE-2023-36054"
]
}
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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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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.
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