CVE-2023-5992
Opensc: side-channel leaks while stripping encryption pkcs#1 padding
02 Description
Opensc: side-channel leaks while stripping encryption pkcs#1 padding
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 1.15% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 66.9% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2024-01-31 14:05Z2 YR AGO
- Last updated
- 2025-11-06 21:45Z11 MO AGO
- Reserved
- 2023-11-07
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.6)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
- Weaknesses
- CWE-203Observable DiscrepancyBase
- Data version
- 5.2
- Document digest
- bec4bfbe227dabe11f46cf42dd8a3972a3b60547cb12d90411262ef2ab30e0be
05 Affected products
06 References
- access.redhat.comRHSA-2024:0966https://access.redhat.com/errata/RHSA-2024:0966
- access.redhat.comRHSA-2024:0967https://access.redhat.com/errata/RHSA-2024:0967
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2023-5992
- bugzilla.redhat.comRHBZ#2248685https://bugzilla.redhat.com/show_bug.cgi?id=2248685
- github.comhttps://github.com/OpenSC/OpenSC/wiki/CVE-2023-5992
- www.usenix.orghttps://www.usenix.org/system/files/usenixsecurity24-shagam.pdf
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OWIZ5ZLO5ECYPLSTESCF7I7PQO5X6ZSU/
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RJI2FWLY24EOPALQ43YPQEZMEP3APPPI/
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UECKC7X4IM4YZQ5KRQMNBNKNOXLZC7RZ/
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/12/msg00026.html
07 Fixed in
AlmaLinux 8
- opensc Fixed in 0.20.0-8.el8_9
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 9
- opensc Fixed in 0.23.0-4.el9_3
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- opensc Fixed in 0.20.0-8.el8_9
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- opensc Fixed in 0.23.0-4.el9_3
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- opensc Fixed in 0.23.0-0.3+deb12u2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- opensc Fixed in 0.25.0~rc1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- opensc Fixed in 0.25.0~rc1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 22.04 LTS
- opensc Fixed in 0.22.0-1ubuntu2+esm1Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.