Integer Underflow

Affecting xorg-server package, versions <2:1.20.4-1+deb10u3

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NVD Description

Note: Versions mentioned in the description apply to the upstream xorg-server package. See Remediation section below for Debian:10 relevant versions.

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.

Remediation

Upgrade Debian:10 xorg-server to version 2:1.20.4-1+deb10u3 or higher.

References

CVSS Score

7.8
high severity
  • Attack Vector
    Local
  • Attack Complexity
    Low
  • Privileges Required
    Low
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    High
  • Integrity
    High
  • Availability
    High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE
CVE-2021-3472
CWE
CWE-191
Snyk ID
SNYK-DEBIAN10-XORGSERVER-1245417
Disclosed
26 Apr, 2021
Published
14 Apr, 2021