CVE-2021-28116

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    CVE-2021-28116

    Published: 9 Mar 2021Last Modified: 8 Jul 2026

    Summary:

    Details: Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data. This can be leveraged as part of a chain for remote code execution as nobody.

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/, http://www.openwall.com/lists/oss-security/2021/10/04/1, http://www.squid-cache.org/Versions/, https://github.com/squid-cache/squid/security/advisories/GHSA-rgf3-9v3p-qp82, https://security.gentoo.org/glsa/202105-14, https://www.debian.org/security/2022/dsa-5171, https://www.zerodayinitiative.com/advisories/ZDI-21-157/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    SQUID_4_14

    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
    CVE-2021-28116 | CVE-DB