Improper Authentication Affecting opensc package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.08% (38th percentile)

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  • Snyk IDSNYK-UBUNTU2204-OPENSC-5932069
  • published26 Feb 2025
  • disclosed6 Nov 2023

Introduced: 6 Nov 2023

CVE-2023-40660  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:22.04 opensc.

NVD Description

Note: Versions mentioned in the description apply only to the upstream opensc package and not the opensc package as distributed by Ubuntu. See How to fix? for Ubuntu:22.04 relevant fixed versions and status.

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.

CVSS Scores

version 3.1