[ASA-202105-12] libx11: insufficient validation
diabonas at archlinux.org
Thu May 20 18:06:05 UTC 2021
Arch Linux Security Advisory ASA-202105-12
Date : 2021-05-19
CVE-ID : CVE-2021-31535
Package : libx11
Type : insufficient validation
Remote : No
Link : https://security.archlinux.org/AVG-1968
The package libx11 before version 1.7.1-1 is vulnerable to insufficient
Upgrade to 1.7.1-1.
# pacman -Syu "libx11>=1.7.1-1"
The problem has been fixed upstream in version 1.7.1.
A security issue has been found in libx11 before version 1.7.1.
XLookupColor() and other X libraries function lack proper validation of
the length of their string parameters. If those parameters can be
controlled by an external application (for instance a color name that
can be emitted via a terminal control sequence) it can lead to the
emission of extra X protocol requests to the X server.
An attacker could emit arbitrary X protocol requests to the X server
through crafted string parameters.
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