ALSA-2023:5924

    Dashboard / Vulnerabilities / ALSA-2023:5924

    ALSA-2023:5924

    Published: 19 Oct 2023Last Modified: 4 Feb 2026

    Summary: Important: varnish security update

    Details: Varnish Cache is a high-performance HTTP accelerator. It stores web pages in memory so web servers don't have to create the same web page over and over again, giving the website a significant speed up. Security Fix(es): * HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack) (CVE-2023-44487) 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-2023:5924, https://access.redhat.com/security/cve/CVE-2023-44487, https://bugzilla.redhat.com/2242803, https://errata.almalinux.org/9/ALSA-2023-5924.html

    Affected packages

    Package

    Name: varnish

    Purl: pkg:rpm/almalinux/varnish

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -6.6.2-3.el9_2.1

    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-2023:5924 | CVE-DB