[ GLSA 202105-16 ] X.Org X11 library

[GLSA]

Gentoo Linux Security Advisory

Title: X.Org X11 library: Denial of service (GLSA 202105-16)
Severity: low
Exploitable: remote
Date: 2021-05-26
Bug(s): #790824
ID: 202105-16

Synopsis

A vulnerability in X.Org X11 library could lead to a Denial of
Service condition.


Background

X.Org is an implementation of the X Window System. The X.Org X11 library
provides the X11 protocol library files.


Affected Packages

Package: x11-libs/libX11
Vulnerable: < 1.7.1
Unaffected: >= 1.7.1
Architectures: All supported architectures


Description

It was discovered that XLookupColor() and other X.Org X11 library
functions lacked proper validation of the length of their string
parameters.


Impact

An attacker could emit arbitrary X protocol requests to the X server
through malicious crafted string parameters in applications linked
against X.Org X11 library.


Workaround

There is no known workaround at this time.

Resolution

All X.Org X11 library users should upgrade to the latest version: