Debian Long Term Support / LTS Security Information / 2021 / Security Information -- DLA-2870-1 apache-log4j2

Debian Security Advisory

DLA-2870-1 apache-log4j2 -- LTS security update

Date Reported:

29 Dec 2021

Affected Packages:

apache-log4j2

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 1002813.
In Mitre's CVE dictionary: CVE-2021-44832.

More information:

Apache Log4j2, a Java Logging Framework, is vulnerable to a remote code execution (RCE) attack where an attacker with permission to modify the logging configuration file can construct a malicious configuration using a JDBC Appender with a data source referencing a JNDI URI which can execute remote code. This issue is fixed by limiting JNDI data source names to the java protocol.

For Debian 9 stretch, this problem has been fixed in version 2.12.4-0+deb9u1.

We recommend that you upgrade your apache-log4j2 packages.

For the detailed security status of apache-log4j2 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/apache-log4j2

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS