A flaw was found in OpenSC packages that allow a potential PIN bypass. When a token/card is authenticated by one process, it can perform cryptographic operations in other processes when an empty zero-length pin is passed. This issue poses a security risk, particularly for OS logon/screen unlock and for small, permanently connected tokens to computers. Additionally, the token can internally track login status. This flaw allows an attacker to gain unauthorized access, carry out malicious actions, or compromise the system without the user's awareness.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-3668-1 opensc security update
Debian DLA Debian DLA DLA-4004-1 opensc security update
EUVD EUVD EUVD-2023-45216 A flaw was found in OpenSC packages that allow a potential PIN bypass. When a token/card is authenticated by one process, it can perform cryptographic operations in other processes when an empty zero-length pin is passed. This issue poses a security risk, particularly for OS logon/screen unlock and for small, permanently connected tokens to computers. Additionally, the token can internally track login status. This flaw allows an attacker to gain unauthorized access, carry out malicious actions, or compromise the system without the user's awareness.
Ubuntu USN Ubuntu USN USN-7346-1 OpenSC vulnerabilities
Ubuntu USN Ubuntu USN USN-7346-3 OpenSC vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 17 Oct 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 04 Dec 2024 14:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-327

Fri, 22 Nov 2024 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-327

Fri, 22 Nov 2024 12:00:00 +0000


Mon, 16 Sep 2024 17:45:00 +0000


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2025-10-17T15:10:55.969Z

Reserved: 2023-08-18T08:08:53.353Z

Link: CVE-2023-40660

cve-icon Vulnrichment

Updated: 2024-08-02T18:38:51.123Z

cve-icon NVD

Status : Modified

Published: 2023-11-06T17:15:11.757

Modified: 2024-12-04T08:15:04.043

Link: CVE-2023-40660

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-09-25T00:00:00Z

Links: CVE-2023-40660 - Bugzilla

cve-icon OpenCVE Enrichment

No data.