ALSA-2023:6643

    Dashboard / Vulnerabilities / ALSA-2023:6643

    ALSA-2023:6643

    Published: 7 Nov 2023Last Modified: 29 Oct 2026

    Summary: Moderate: libssh security update

    Details: libssh is a library which implements the SSH protocol. It can be used to implement client and server applications. Security Fix(es): * libssh: NULL pointer dereference during rekeying with algorithm guessing (CVE-2023-1667) * libssh: authorization bypass in pki_verify_data_signature (CVE-2023-2283) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

    References: https://access.redhat.com/errata/RHSA-2023:6643, https://access.redhat.com/security/cve/CVE-2023-1667, https://access.redhat.com/security/cve/CVE-2023-2283, https://bugzilla.redhat.com/2182199, https://bugzilla.redhat.com/2189736, https://errata.almalinux.org/9/ALSA-2023-6643.html

    Affected packages

    Package

    Name: libssh

    Purl: pkg:rpm/almalinux/libssh

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.10.4-11.el9

    Affected versions

    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