GLSA 202104-02: X.Org X Server: Privilege escalation
| Severity: | high |
| Title: | X.Org X Server: Privilege escalation |
| Date: | 04/30/2021 |
| Bugs: | |
| ID: | 202104-02 |
Synopsis
A vulnerability in X.Org X Server may allow users to escalate privileges.Background
The X Window System is a graphical windowing system based on a client/server model.
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| x11-base/xorg-server | < 1.20.11 | >= 1.20.11 | All supported architectures |
Description
It was discovered that X.Org X Server did not sufficiently check the length of the XInput extension’s ChangeFeedbackControl request.
Impact
An authorized attacker could possibly escalate privileges, or cause a Denial of Service condition.
Workaround
There is no known workaround at this time.
Resolution
All X.Org X Server users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=x11-base/xorg-server-1.20.11"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.