Amazon Linux 2 Security Advisory: ALAS-2021-1623
Advisory Release Date: 2021-03-25 18:31 Pacific
Advisory Updated Date: 2021-03-25 20:52 Pacific
Severity:
Important
Issue Overview:
A flaw was found in screen. A specially crafted sequence of combining characters could cause an out of bounds write leading to arbitrary code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-26937)
Affected Packages:
screen
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 screen to update your system.
New Packages:
aarch64:
screen-4.1.0-0.27.20120314git3c2946.amzn2.aarch64
screen-debuginfo-4.1.0-0.27.20120314git3c2946.amzn2.aarch64
i686:
screen-4.1.0-0.27.20120314git3c2946.amzn2.i686
screen-debuginfo-4.1.0-0.27.20120314git3c2946.amzn2.i686
src:
screen-4.1.0-0.27.20120314git3c2946.amzn2.src
x86_64:
screen-4.1.0-0.27.20120314git3c2946.amzn2.x86_64
screen-debuginfo-4.1.0-0.27.20120314git3c2946.amzn2.x86_64