liblog4j2-java 2.16.0-0.20.04.1: liblog4j2-java 2.16.0-0.20.04.1 for Ubuntu 20.04 LTS (focal)

liblog4j2-java 2.16.0-0.20.04.1, released December 14, 2021, fixes 2 CVEs in liblog4j2-java. One of them is being exploited (CVE-2021-45046); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.

Patch now1 on CISA KEVKnown ransomware useUnsupported product

CVEs closed

1 rated Critical

Exploited

CVE-2021-45046

Highest CVSS

9.0

Base score, 0 to 10

Highest EPSS

0.9998

99th percentile

Priority of the 2 CVEs

Patch now 1
                                Urgent 0
                                High 0
                                Routine 1

Fixed package versions

Product	Release	Fixed in
liblog4j2-java	Ubuntu 20.04 LTS (focal)	2.16.0-0.20.04.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Patch now	CVE-2021-45046	apache-log4j2: apache-log4j2 - security update	9.0	0.9998	KEVRansomwareExploited
Routine	CVE-2020-9488	liblog4j2-java: Improper validation of certificate with host mismatch in Apache Log4j SMTP appender	n/a	0.0822	None reported

Also fixes CVE-2021-45046

DSA-5022-1
apache-log4j2 on Debian 11.6 (bullseye)
DEBIAN-CVE-2021-45046
apache-log4j2 on Debian 12.15 (bookworm), Debian 13.5 (trixie), Debian 14

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