Amazon Linux 2 Security Advisory: ALAS-2021-1686
Advisory Release Date: 2021-07-14 20:38 Pacific
Advisory Updated Date: 2021-07-15 21:42 Pacific
Severity:
Important
Issue Overview:
A missing validation flaw was found in libX11. This flaw allows an attacker to inject X11 protocol commands on X clients, and in some cases, also bypass, authenticate (via injection of control characters), or potentially execute arbitrary code with permissions of the application compiled with libX11. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-31535)
Affected Packages:
libX11
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update libX11 to update your system.
New Packages:
aarch64:
libX11-1.6.7-3.amzn2.0.2.aarch64
libX11-devel-1.6.7-3.amzn2.0.2.aarch64
libX11-debuginfo-1.6.7-3.amzn2.0.2.aarch64
i686:
libX11-1.6.7-3.amzn2.0.2.i686
libX11-devel-1.6.7-3.amzn2.0.2.i686
libX11-debuginfo-1.6.7-3.amzn2.0.2.i686
noarch:
libX11-common-1.6.7-3.amzn2.0.2.noarch
src:
libX11-1.6.7-3.amzn2.0.2.src
x86_64:
libX11-1.6.7-3.amzn2.0.2.x86_64
libX11-devel-1.6.7-3.amzn2.0.2.x86_64
libX11-debuginfo-1.6.7-3.amzn2.0.2.x86_64