Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
OpenSC
Default version status: unaffected
0.17.0 to < 0.24.0affected
Red Hat Red Hat Enterprise Linux 8
Default version status: affected
0:0.20.0-7.el8_9 to < *unaffected
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
0:0.23.0-3.el9_3 to < *unaffected
Red Hat Red Hat Enterprise Linux 7
Default version status: unknown
References
- https://access.redhat.com/errata/RHSA-2023:7876 ↗
- https://access.redhat.com/errata/RHSA-2023:7879 ↗
- https://access.redhat.com/security/cve/CVE-2023-40660 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2240912 ↗
- https://github.com/OpenSC/OpenSC/issues/2792#issuecomment-1674806651 ↗
- https://github.com/OpenSC/OpenSC/releases/tag/0.24.0-rc1 ↗
- https://github.com/OpenSC/OpenSC/wiki/OpenSC-security-advisories ↗
- http://www.openwall.com/lists/oss-security/2023/12/13/2 ↗
- https://lists.debian.org/debian-lts-announce/2023/11/msg00024.html ↗
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3CPQOMCDWFRBMEFR5VK4N5MMXXU42ODE/ ↗
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GLYEFIBBA37TK3UNMZN5NOJ7IWCIXLQP/ ↗
- https://lists.debian.org/debian-lts-announce/2024/12/msg00026.html ↗