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    CVE-2023-5992

    A vulnerability was found in OpenSC where PKCS#1 encryption padding removal is not implemented as side-channel resistant. This issue may result in the potential leak of private data.

    Published:Nov 28, 2023
    Last Modified:Nov 6, 2025
    EPS:Jan 31, 2024
    EPSS Score:0.00323
    CVSS Score:5.6

    Affected Products

    Vendor
    Opensc Project
    Product
    Opensc
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Eus
    Vendor
    Redhat
    Product
    Enterprise Linux For Arm 64
    Vendor
    Redhat
    Product
    Enterprise Linux For Arm 64 Eus
    Vendor
    Redhat
    Product
    Enterprise Linux For Ibm Z Systems
    Vendor
    Redhat
    Product
    Enterprise Linux For Ibm Z Systems Eus
    Vendor
    Redhat
    Product
    Enterprise Linux For Power Little Endian
    Vendor
    Redhat
    Product
    Enterprise Linux For Power Little Endian Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions

    Exploits

    https://www.usenix.org/system/files/usenixsecurity24-shagam.pdf

    Common Weakness Enumeration

    CWE-203 Observable Discrepancy

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-189 Black Box Reverse Engineering

    Related CVEs

    CVE-2026-40528 (CVSS 1) — OpenSC before 0.27.0, fixed in commit 0358817, contains a stack and heap buffer overrun vulnerability in the d…
    CVE-2026-40510 (CVSS 1) — OpenSC before 0.27.0-rc1, fixed in commit 3f24f0b, contains a stack buffer overflow vulnerability in piv_proce…
    CVE-2025-66215 (CVSS 3.8) — OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, an attacker with physical a…
    CVE-2025-66038 (CVSS 3.9) — OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, sc_compacttlv_find_tag sear…
    CVE-2025-66037 (CVSS 3.9) — OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, feeding a crafted input to …
    CVE-2025-49010 (CVSS 3.8) — OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, an attacker with physical a…
    CVE-2025-24531 (CVSS 6.7) — In OpenSC pam_pkcs11 before 0.6.13, pam_sm_authenticate() wrongly returns PAM_IGNORE in many error situations …
    CVE-2024-8443 (CVSS 2.9) — A heap-based buffer overflow vulnerability was found in the libopensc OpenPGP driver. A crafted USB device or …
    CVE-2024-45617 (CVSS 3.9) — A vulnerability was found in OpenSC, OpenSC tools, PKCS#11 module, minidriver, and CTK. An attacker could use …
    CVE-2024-45619 (CVSS 4.3) — A vulnerability was found in OpenSC, OpenSC tools, PKCS#11 module, minidriver, and CTK. An attacker could use …

    References

    https://access.redhat.com/errata/RHSA-2024:0966
    https://access.redhat.com/errata/RHSA-2024:0967
    https://access.redhat.com/security/cve/CVE-2023-5992
    https://bugzilla.redhat.com/show_bug.cgi?id=2248685
    https://github.com/OpenSC/OpenSC/wiki/CVE-2023-5992
    https://www.usenix.org/system/files/usenixsecurity24-shagam.pdf
    https://access.redhat.com/errata/RHSA-2024:0966
    https://access.redhat.com/errata/RHSA-2024:0967
    https://access.redhat.com/security/cve/CVE-2023-5992
    https://bugzilla.redhat.com/show_bug.cgi?id=2248685
    https://github.com/OpenSC/OpenSC/wiki/CVE-2023-5992
    https://lists.debian.org/debian-lts-announce/2024/12/msg00026.html
    https://lists.fedoraproject.org/archives/list/[email protected]/message/OWIZ5ZLO5ECYPLSTESCF7I7PQO5X6ZSU/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/RJI2FWLY24EOPALQ43YPQEZMEP3APPPI/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/UECKC7X4IM4YZQ5KRQMNBNKNOXLZC7RZ/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High