Description
Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3) did not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0 and 2.12.3.
Solution(s)
debian-upgrade-apache-log4j2
Referenceshttps://attackerkb.com/topics/cve-2021-45105 CVE - 2021-45105 DSA-5024-1