SUSE-SU-2025:0712-1
Vulnerability from csaf_suse - Published: 2025-02-25 10:38 - Updated: 2025-02-25 10:38Summary
Security update for pam_pkcs11
Notes
Title of the patch
Security update for pam_pkcs11
Description of the patch
This update for pam_pkcs11 fixes the following issues:
- CVE-2025-24032: default value for `cert_policy` (`none`) allows for authentication bypass (bsc#1237062).
- CVE-2025-24031: uninitialized pointer dereference caused by user pressing ctrl-c/ctrl-d when asked for PIN leads to
crash (bsc#1237058).
Patchnames
SUSE-2025-712,SUSE-SLE-Micro-5.3-2025-712,SUSE-SLE-Micro-5.4-2025-712,SUSE-SLE-Micro-5.5-2025-712,SUSE-SUSE-MicroOS-5.1-2025-712,SUSE-SUSE-MicroOS-5.2-2025-712
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
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"vulnerabilities": [
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"category": "general",
"text": "PAM-PKCS#11 is a Linux-PAM login module that allows a X.509 certificate based user login. In versions 0.6.12 and prior, the pam_pkcs11 module segfaults when a user presses ctrl-c/ctrl-d when they are asked for a PIN. When a user enters no PIN at all, `pam_get_pwd` will never initialize the password buffer pointer and as such `cleanse` will try to dereference an uninitialized pointer. On my system this pointer happens to have the value 3 most of the time when running sudo and as such it will segfault. The most likely impact to a system affected by this issue is an availability impact due to a daemon that uses PAM crashing. As of time of publication, a patch for the issue is unavailable.",
"title": "CVE description"
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"baseSeverity": "LOW",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
"version": "3.1"
},
"products": [
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]
}
],
"threats": [
{
"category": "impact",
"date": "2025-02-25T10:38:03Z",
"details": "moderate"
}
],
"title": "CVE-2025-24031"
},
{
"cve": "CVE-2025-24032",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2025-24032"
}
],
"notes": [
{
"category": "general",
"text": "PAM-PKCS#11 is a Linux-PAM login module that allows a X.509 certificate based user login. Prior to version 0.6.13, if cert_policy is set to none (the default value), then pam_pkcs11 will only check if the user is capable of logging into the token. An attacker may create a different token with the user\u0027s public data (e.g. the user\u0027s certificate) and a PIN known to the attacker. If no signature with the private key is required, then the attacker may now login as user with that created token. The default to *not* check the private key\u0027s signature has been changed with commit commi6638576892b59a99389043c90a1e7dd4d783b921, so that all versions starting with pam_pkcs11-0.6.0 should be affected. As a workaround, in `pam_pkcs11.conf`, set at least `cert_policy = signature;`.",
"title": "CVE description"
}
],
"product_status": {
"recommended": [
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},
"references": [
{
"category": "external",
"summary": "CVE-2025-24032",
"url": "https://www.suse.com/security/cve/CVE-2025-24032"
},
{
"category": "external",
"summary": "SUSE Bug 1237062 for CVE-2025-24032",
"url": "https://bugzilla.suse.com/1237062"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
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],
"scores": [
{
"cvss_v3": {
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L",
"version": "3.1"
},
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],
"threats": [
{
"category": "impact",
"date": "2025-02-25T10:38:03Z",
"details": "moderate"
}
],
"title": "CVE-2025-24032"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
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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