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CVE-2023-40660

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2023-7876-03
Posted Dec 20, 2023
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2023-7876-03 - An update for opensc is now available for Red Hat Enterprise Linux 8. Issues addressed include a bypass vulnerability.

tags | advisory, bypass
systems | linux, redhat
advisories | CVE-2023-40660
SHA-256 | e166f025c98c78bc231527d657dc8d681065b9f4b2220116fa85d72d3953db7f
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