UBUNTU-CVE-2023-5824

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    UBUNTU-CVE-2023-5824

    Published: 3 Nov 2023Last Modified: 4 Feb 2026
    Upstream:
    CVE-2023-5824

    Summary:

    Details: A flaw was found in Squid. The limits applied for validation of HTTP response headers are applied before caching. However, Squid may grow a cached HTTP response header beyond the configured maximum size, causing a stall or crash of the worker process when a large header is retrieved from the disk cache, resulting in a denial of service.

    References: https://ubuntu.com/security/CVE-2023-5824, https://github.com/squid-cache/squid/security/advisories/GHSA-543m-w2m2-g255, https://lists.squid-cache.org/pipermail/squid-announce/2023-October/000155.html, https://megamansec.github.io/Squid-Security-Audit/cache-headers.html, https://ubuntu.com/security/notices/USN-6728-1, https://ubuntu.com/security/notices/USN-6728-2, https://www.cve.org/CVERecord?id=CVE-2023-5824, https://ubuntu.com/security/notices/USN-6728-3

    Affected packages

    Package

    Name: squid3

    Purl: pkg:deb/ubuntu/[email protected]+esm6?arch=source&distro=esm-infra/xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    3.3.8-1ubuntu16
    3.3.8-1ubuntu17

    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
    UBUNTU-CVE-2023-5824 | CVE-DB