log4j-1.2.17-17.0.1.el7.AXS7

Log4j is a tool to help the programmer output log statements to a variety of
output targets.

Security Fix(es):

* log4j: Remote code execution in Log4j 1.x when application is configured to
use JMSAppender (CVE-2021-4104)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE page(s)
listed in the References section.

CVE-2021-4104
JMSAppender in Log4j 1.2 is vulnerable to deserialization of untrusted data when
the attacker has write access to the Log4j configuration. The attacker can
provide TopicBindingName and TopicConnectionFactoryBindingName configurations
causing JMSAppender to perform JNDI requests that result in remote code
execution in a similar fashion to CVE-2021-44228. Note this issue only affects
Log4j 1.2 when specifically configured to use JMSAppender, which is not the
default. Apache Log4j 1.2 reached end of life in August 2015. Users should
upgrade to Log4j 2 as it addresses numerous other issues from the previous
versions.