Opensc: potential pin bypass when card tracks its own login state (OpenSC)
At a glance
- Source
- NVD
- EPSS
- EPSS 1.04 % · percentile 64 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-287 — Improper Authentication
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
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.6 | CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | redhat |
| CVSS 3.1 | MEDIUM 6.6 | CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | NVD · secalert@redhat.com (Secondary) |
| CVSS 3.1 | MEDIUM 6.6 | CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2023-45216
- GCVE · GCVE-0-2023-40660
Affected configurations (NVD CPE)
cpe:2.3:a:opensc_project:opensc:*:*:*:*:*:*:*:*≤ 0.23.0cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| OpenSC | affected 0.17.0 < 0.24.0 |
| Red Hat · Red Hat Enterprise Linux 8 | unaffected 0:0.20.0-7.el8_9 < * |
| Red Hat · Red Hat Enterprise Linux 9 | unaffected 0:0.23.0-3.el9_3 < * |
| Red Hat · Red Hat Enterprise Linux 7 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |