CVE-2019-12527

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    CVE-2019-12527

    Published: 11 Jul 2019Last Modified: 8 Jul 2026

    Summary:

    Details: An issue was discovered in Squid 4.0.23 through 4.7. When checking Basic Authentication with HttpHeader::getAuth, Squid uses a global buffer to store the decoded data. Squid does not check that the decoded length isn't greater than the buffer, leading to a heap-based buffer overflow with user controlled data.

    References: http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html, http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/, http://www.securityfocus.com/bid/109143, http://www.squid-cache.org/Versions/v4/changesets/, https://access.redhat.com/errata/RHSA-2019:2593, https://seclists.org/bugtraq/2019/Aug/42, https://usn.ubuntu.com/4065-1/, https://www.debian.org/security/2019/dsa-4507, http://www.squid-cache.org/Versions/v4/changesets/squid-4-7f73e9c5d17664b882ed32590e6af310c247f320.patch, https://github.com/squid-cache/squid/commits/v4

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 787b41c3b0ef9b7330032a1947c5f93bd050f32a
    Fixed -None

    Affected versions

    SQUID_4_7

    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