OpenSC pam_pkcs11 0.6.12 pam_sm_authenticate improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenSC pam_pkcs11 0.6.12. It has been declared as critical. This impacts the function pam_sm_authenticate. The manipulation results in improper authentication. This vulnerability is known as CVE-2025-24531. No exploit is available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability classified as critical has been found in OpenSC pam_pkcs11 0.6.12. Affected is the function pam_sm_authenticate. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In OpenSC pam_pkcs11 before 0.6.13, pam_sm_authenticate() wrongly returns PAM_IGNORE in many error situations (such as an error triggered by a smartcard before login), allowing authentication bypass.

The weakness was published by Marcus Rückert. The advisory is available at seclists.org. This vulnerability is traded as CVE-2025-24531 since 01/23/2025. The exploitability is told to be easy. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 216206 (Debian dsa-5864 : libpam-pkcs11 - security update), which helps to determine the existence of the flaw in a target environment.

Applying the patch 2ecba68d40 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at Tenable (216206). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 6.7
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 216206
Nessus Name: Debian dsa-5864 : libpam-pkcs11 - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 2ecba68d40

Timelineinfo

01/23/2025 🔍
02/07/2025 +15 days 🔍
02/07/2025 +0 days 🔍
01/17/2026 +344 days 🔍

Sourcesinfo

Advisory: seclists.org
Researcher: Marcus Rückert
Status: Confirmed

CVE: CVE-2025-24531 (🔍)
GCVE (CVE): GCVE-0-2025-24531
GCVE (VulDB): GCVE-100-294930

Entryinfo

Created: 02/07/2025 08:52
Updated: 01/17/2026 11:36
Changes: 02/07/2025 08:52 (54), 02/13/2025 06:50 (2), 01/17/2026 11:36 (12)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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