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    CVE-2018-14599

    An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c is vulnerable to an off-by-one error caused by malicious server responses, leading to DoS or possibly unspecified other impact.

    Published:Aug 21, 2018
    Last Modified:Nov 21, 2024
    EPS:Aug 24, 2018
    EPSS Score:0.02078
    CVSS Score:9.8

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation
    Vendor
    X.org
    Product
    Libx11

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    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…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
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    References

    http://www.openwall.com/lists/oss-security/2018/08/21/6
    http://www.securityfocus.com/bid/105177
    http://www.securitytracker.com/id/1041543
    https://access.redhat.com/errata/RHSA-2019:2079
    https://bugzilla.suse.com/show_bug.cgi?id=1102062
    https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=b469da1430cdcee06e31c6251b83aede072a1ff0
    https://lists.debian.org/debian-lts-announce/2018/08/msg00030.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YGARUV66TS5OOSLR5A76BUB7SDV6GO4F/
    https://lists.x.org/archives/xorg-announce/2018-August/002916.html
    https://security.gentoo.org/glsa/201811-01
    https://usn.ubuntu.com/3758-1/
    https://usn.ubuntu.com/3758-2/
    http://www.openwall.com/lists/oss-security/2018/08/21/6
    http://www.securityfocus.com/bid/105177
    http://www.securitytracker.com/id/1041543
    https://access.redhat.com/errata/RHSA-2019:2079
    https://bugzilla.suse.com/show_bug.cgi?id=1102062
    https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=b469da1430cdcee06e31c6251b83aede072a1ff0
    https://lists.debian.org/debian-lts-announce/2018/08/msg00030.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YGARUV66TS5OOSLR5A76BUB7SDV6GO4F/
    https://lists.x.org/archives/xorg-announce/2018-August/002916.html
    https://security.gentoo.org/glsa/201811-01
    https://usn.ubuntu.com/3758-1/
    https://usn.ubuntu.com/3758-2/

    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