Amazon Linux AMI Security Advisory: ALAS-2021-1492
Advisory Release Date: 2021-04-07 00:18 Pacific
Advisory Updated Date: 2021-04-07 18:49 Pacific
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)
Run yum update screen to update your system.