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.


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