Improper Verification of Cryptographic Signature Affecting OpenSC/pam_pkcs11 package, versions [0.6.0,0.6.13)
Threat Intelligence
Exploit maturity not defined.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-OPENSCPAMPKCS11-8709969
- published11 Feb 2025
- disclosed10 Feb 2025
- creditFrank Morgner
Introduced: 10 Feb 2025
NewCVE-2025-24032 (opens in a new tab)How to fix?
Upgrade OpenSC/pam_pkcs11 to version 0.6.13 or higher.
Overview
Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in pam_sm_authenticate() in pam_pkcs11.c. When the default configuration of cert_policy none is in use, an attacker can bypass authentication and log in as another user by creating a token with the user's public data and a known PIN, without needing to provide a signature with the private key.
Workaround
This vulnerability can be avoided by setting cert_policy = signature; in pam_pkcs11.conf.