PT-2025-6067 · Unknown+2 · Pam Pkcs11+2

Bjorn3 · Published 2025-02-10 · Updated 2025-04-22 · CVE-2025-24031

Positive Technologies (AI Summary)

CVSS v4.0

5.1

Medium

Base vector

AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L/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

Name of the Vulnerable Software and Affected Versions PAM-PKCS#11 versions 0.6.12 and prior

Description The issue affects a Linux-PAM login module that allows X.509 certificate-based user login. When a user presses ctrl-c/ctrl-d while being asked for a PIN, the pam pkcs11 module segfaults. Additionally, if a user enters no PIN, pam get pwd will not initialize the password buffer pointer, causing cleanse to try to dereference an uninitialized pointer, potentially leading to a segfault. The most likely impact is an availability issue due to a daemon that uses PAM crashing.

Recommendations For versions 0.6.12 and prior, as a temporary workaround, consider disabling the pam pkcs11 module until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2025-24031

GHSA-WVR3-C9X3-9MFF

OPENSUSE-SU-2025_0689-1

SUSE-SU-2025:0688-1

SUSE-SU-2025:0689-1

SUSE-SU-2025:0712-1

SUSE-SU-2025:20199-1

SUSE-SU-2025_0688-1

SUSE-SU-2025_0689-1

Affected Products

Debian

Pam Pkcs11

Suse

References · 25

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24031.json · Exploit
• 🔥 https://github.com/OpenSC/pam_pkcs11/security/advisories/GHSA-wvr3-c9x3-9mff · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-24031 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:20199-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:0688-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-24031 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:0689-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-24031 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-24031 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-24031 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-24031 · Security Note
• https://ubuntu.com/security/CVE-2025-24031 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:0712-1 · Vendor Advisory
• https://github.com/OpenSC/pam_pkcs11/blob/bb2e3f3a95e44fdf44b0d5a4b377db3179021380/src/pam_pkcs11/pam_pkcs11.c#L211 · Note
• https://github.com/OpenSC/pam_pkcs11/blob/bb2e3f3a95e44fdf44b0d5a4b377db3179021380/src/pam_pkcs11/pam_pkcs11.c#L797 · Note