UBUNTU-CVE-2023-50269

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    UBUNTU-CVE-2023-50269

    Published: 14 Dec 2023Last Modified: 4 Feb 2026
    Upstream:
    CVE-2023-50269

    Summary:

    Details: Squid is a caching proxy for the Web. Due to an Uncontrolled Recursion bug in versions 2.6 through 2.7.STABLE9, versions 3.1 through 5.9, and versions 6.0.1 through 6.5, Squid may be vulnerable to a Denial of Service attack against HTTP Request parsing. This problem allows a remote client to perform Denial of Service attack by sending a large X-Forwarded-For header when the follow_x_forwarded_for feature is configured. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives.

    References: https://ubuntu.com/security/CVE-2023-50269, https://github.com/squid-cache/squid/security/advisories/GHSA-wgq4-4cfg-c4x3, https://ubuntu.com/security/notices/USN-6594-1, https://www.cve.org/CVERecord?id=CVE-2023-50269, https://ubuntu.com/security/notices/USN-6857-1

    Affected packages

    Package

    Name: squid3

    Purl: pkg:deb/ubuntu/[email protected]+esm3?arch=source&distro=esm-infra/xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.5.12-1ubuntu7.16+esm3

    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-2023-50269 | CVE-DB