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    CVE-2021-28652

    An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege.

    Published:May 10, 2021
    Last Modified:Nov 21, 2024
    EPS:May 27, 2021
    EPSS Score:0.003
    CVSS Score:4.9

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Squid-cache
    Product
    Squid

    Exploits

    https://bugs.squid-cache.org/show_bug.cgi?id=5106https://bugs.squid-cache.org/show_bug.cgi?id=5106

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://seclists.org/fulldisclosure/2023/Oct/14
    http://www.openwall.com/lists/oss-security/2023/10/11/3
    https://bugs.squid-cache.org/show_bug.cgi?id=5106
    https://github.com/squid-cache/squid/security/advisories/GHSA-m47m-9hvw-7447
    https://lists.debian.org/debian-lts-announce/2021/06/msg00014.html
    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/
    https://www.debian.org/security/2021/dsa-4924
    http://seclists.org/fulldisclosure/2023/Oct/14
    http://www.openwall.com/lists/oss-security/2023/10/11/3
    https://bugs.squid-cache.org/show_bug.cgi?id=5106
    https://github.com/squid-cache/squid/security/advisories/GHSA-m47m-9hvw-7447
    https://lists.debian.org/debian-lts-announce/2021/06/msg00014.html
    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/
    https://www.debian.org/security/2021/dsa-4924

    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