USN-7363-1 (UBUNTU-CVE-2025-24032)
Vulnerability from osv_ubuntu – Published: 2025-03-20 18:43 – Updated: 2026-06-25 10:46 – Source website
VLAI
Summary
pam-pkcs11 vulnerabilities
Details
Marcus Rückert and Matthias Gerstner discovered that PAM-PKCS#11 did not properly handle certain return codes when authentication was not possible. An attacker could possibly use this issue to bypass authentication. This issue only affected Ubuntu 24.04 LTS and Ubuntu 24.10. (CVE-2025-24531)
It was discovered that PAM-PKCS#11 did not require a private key signature for authentication by default. An attacker could possibly use this issue to bypass authentication. (CVE-2025-24032)
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2025-24032",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L",
"type": "CVSS_V4"
},
{
"score": "high",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libpam-pkcs11",
"binary_version": "0.6.8-4ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "pam-pkcs11",
"purl": "pkg:deb/ubuntu/pam-pkcs11@0.6.8-4ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.6.8-4ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.6.8-4"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2025-24032",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L",
"type": "CVSS_V4"
},
{
"score": "high",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libpam-pkcs11",
"binary_version": "0.6.9-2ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "pam-pkcs11",
"purl": "pkg:deb/ubuntu/pam-pkcs11@0.6.9-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.6.9-2ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.6.9-1",
"0.6.9-2",
"0.6.9-2build1",
"0.6.9-2build2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2025-24032",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L",
"type": "CVSS_V4"
},
{
"score": "high",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libpam-pkcs11",
"binary_version": "0.6.11-2ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "pam-pkcs11",
"purl": "pkg:deb/ubuntu/pam-pkcs11@0.6.11-2ubuntu0.1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.6.11-2ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.6.11-2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2025-24032",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L",
"type": "CVSS_V4"
},
{
"score": "high",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:22.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libpam-pkcs11",
"binary_version": "0.6.11-4ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "pam-pkcs11",
"purl": "pkg:deb/ubuntu/pam-pkcs11@0.6.11-4ubuntu0.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.6.11-4ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.6.11-4build1",
"0.6.11-4build2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2025-24032",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L",
"type": "CVSS_V4"
},
{
"score": "high",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2025-24531",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:24.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libpam-pkcs11",
"binary_version": "0.6.12-2ubuntu0.24.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "pam-pkcs11",
"purl": "pkg:deb/ubuntu/pam-pkcs11@0.6.12-2ubuntu0.24.04.1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.6.12-2ubuntu0.24.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.6.12-1",
"0.6.12-2",
"0.6.12-2build2",
"0.6.12-2build3"
]
}
],
"aliases": [],
"details": "Marcus R\u00fcckert and Matthias Gerstner discovered that PAM-PKCS#11 did not\nproperly handle certain return codes when authentication was not possible.\nAn attacker could possibly use this issue to bypass authentication. This\nissue only affected Ubuntu 24.04 LTS and Ubuntu 24.10. (CVE-2025-24531)\n\nIt was discovered that PAM-PKCS#11 did not require a private key signature\nfor authentication by default. An attacker could possibly use this issue\nto bypass authentication. (CVE-2025-24032)\n",
"id": "USN-7363-1",
"modified": "2026-06-25T10:46:42Z",
"published": "2025-03-20T18:43:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7363-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-24032"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-24531"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "pam-pkcs11 vulnerabilities",
"upstream": [
"UBUNTU-CVE-2025-24032",
"UBUNTU-CVE-2025-24531"
]
}
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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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Related by attack behaviour
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