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    CVE-2021-3472

    A flaw was found in xorg-x11-server in versions before 1.20.11. An integer underflow can occur in xserver which can lead to a local privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

    Published:Apr 13, 2021
    Last Modified:Nov 21, 2024
    EPS:Apr 26, 2021
    EPSS Score:0.00093
    CVSS Score:7.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    X.org
    Product
    X Server

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://www.openwall.com/lists/oss-security/2021/04/13/1
    https://bugzilla.redhat.com/show_bug.cgi?id=1944167
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/7aaf54a1884f71dc363f0b884e57bcb67407a6cd
    https://lists.debian.org/debian-lts-announce/2021/04/msg00013.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDF7TAJE7NPZPNVOXSD5HBIFLNPUOD2V/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MO6S5OPXUDYBSRSVWVLFLJ6AFERG4HNY/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N63KL3T22HNFT4FJ7VMVF6U5Q4RFJIQF/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PEXPCLMVU25AUZTUXC4MYBGPKOAIM5TW/
    https://lists.x.org/archives/xorg-announce/2021-April/003080.html
    https://lists.x.org/archives/xorg-announce/2021-April/003080.html
    https://lists.x.org/archives/xorg-announce/2021-April/003080.html
    https://lists.x.org/archives/xorg-announce/2021-April/003080.html
    https://seclists.org/oss-sec/2021/q2/20
    https://security.gentoo.org/glsa/202104-02
    https://www.debian.org/security/2021/dsa-4893
    https://www.tenable.com/plugins/nessus/148701
    https://www.zerodayinitiative.com/advisories/ZDI-21-463/
    http://www.openwall.com/lists/oss-security/2021/04/13/1
    https://bugzilla.redhat.com/show_bug.cgi?id=1944167
    https://gitlab.freedesktop.org/xorg/xserver/-/commit/7aaf54a1884f71dc363f0b884e57bcb67407a6cd
    https://lists.debian.org/debian-lts-announce/2021/04/msg00013.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDF7TAJE7NPZPNVOXSD5HBIFLNPUOD2V/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MO6S5OPXUDYBSRSVWVLFLJ6AFERG4HNY/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N63KL3T22HNFT4FJ7VMVF6U5Q4RFJIQF/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PEXPCLMVU25AUZTUXC4MYBGPKOAIM5TW/
    https://lists.x.org/archives/xorg-announce/2021-April/003080.html
    https://lists.x.org/archives/xorg-announce/2021-April/003080.html
    https://lists.x.org/archives/xorg-announce/2021-April/003080.html
    https://lists.x.org/archives/xorg-announce/2021-April/003080.html
    https://seclists.org/oss-sec/2021/q2/20
    https://security.gentoo.org/glsa/202104-02
    https://www.debian.org/security/2021/dsa-4893
    https://www.tenable.com/plugins/nessus/148701
    https://www.zerodayinitiative.com/advisories/ZDI-21-463/

    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