ALSA-2023:2633

    Dashboard / Vulnerabilities / ALSA-2023:2633

    ALSA-2023:2633

    Published: 9 May 2023Last Modified: 4 Feb 2026

    Summary: Moderate: libreswan security update

    Details: Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN). Security Fix(es): * libreswan: remote DoS via crafted TS payload with an incorrect selector length (CVE-2023-23009) 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.

    References: https://access.redhat.com/errata/RHSA-2023:2633, https://access.redhat.com/security/cve/CVE-2023-23009, https://bugzilla.redhat.com/2173610, https://errata.almalinux.org/9/ALSA-2023-2633.html

    Affected packages

    Package

    Name: libreswan

    Purl: pkg:rpm/almalinux/libreswan

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.9-2.el9_2

    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
    ALSA-2023:2633 | CVE-DB