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Status published
High
CVE-2021-3472
A flaw was found in xorg-x11-server in versions before 1.20.11....
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
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Credits & Attribution
No credits recorded in the NVD database.
References
- http://www.openwall.com/lists/oss-security/2021/04/13/1
- https://lists.debian.org/debian-lts-announce/2021/04/msg00013.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MO6S5OPXUDYBSRSVWVLFLJ6AFERG4HNY/
- https://www.debian.org/security/2021/dsa-4893
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PEXPCLMVU25AUZTUXC4MYBGPKOAIM5TW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDF7TAJE7NPZPNVOXSD5HBIFLNPUOD2V/
- https://www.zerodayinitiative.com/advisories/ZDI-21-463/
- https://lists.x.org/archives/xorg-announce/2021-April/003080.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N63KL3T22HNFT4FJ7VMVF6U5Q4RFJIQF/
- https://bugzilla.redhat.com/show_bug.cgi?id=1944167
- https://lists.x.org/archives/xorg-announce/2021-April/003080.html
- https://seclists.org/oss-sec/2021/q2/20
- https://www.tenable.com/plugins/nessus/148701
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/7aaf54a1884f71dc363f0b884e57bcb67407a6cd
- https://security.gentoo.org/glsa/202104-02
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Affected Vendor
Affected Software
xorg-x11-server
Vulnerable Versions:
xorg-x11-server 1.20.11
Timeline
Official Publish:
April 26th, 2021
Last Modified:
August 3rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H