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    CVE-2019-18677

    An issue was discovered in Squid 3.x and 4.x through 4.8 when the append_domain setting is used (because the appended characters do not properly interact with hostname length restrictions). Due to incorrect message processing, it can inappropriately redirect traffic to origins it should not be delivered to.

    Published:Nov 5, 2019
    Last Modified:Nov 21, 2024
    EPS:Nov 26, 2019
    EPSS Score:0.04138
    CVSS Score:6.1

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Squid-cache
    Product
    Squid

    Exploits

    No exploit reference

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    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
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    References

    http://www.squid-cache.org/Advisories/SQUID-2019_9.txt
    http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-e5f1813a674848dde570f7920873e1071f96e0b4.patch
    http://www.squid-cache.org/Versions/v4/changesets/squid-4-36492033ea4097821a4f7ff3ddcb971fbd1e8ba0.patch
    https://bugzilla.suse.com/show_bug.cgi?id=1156328
    https://github.com/squid-cache/squid/pull/427
    https://lists.debian.org/debian-lts-announce/2019/12/msg00011.html
    https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/
    https://usn.ubuntu.com/4213-1/
    https://www.debian.org/security/2020/dsa-4682
    http://www.squid-cache.org/Advisories/SQUID-2019_9.txt
    http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-e5f1813a674848dde570f7920873e1071f96e0b4.patch
    http://www.squid-cache.org/Versions/v4/changesets/squid-4-36492033ea4097821a4f7ff3ddcb971fbd1e8ba0.patch
    https://bugzilla.suse.com/show_bug.cgi?id=1156328
    https://github.com/squid-cache/squid/pull/427
    https://lists.debian.org/debian-lts-announce/2019/12/msg00011.html
    https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/
    https://usn.ubuntu.com/4213-1/
    https://www.debian.org/security/2020/dsa-4682

    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