~ / search / GHSA-fp5r-v3w9-4333

GHSA-fp5r-v3w9-4333

JMSAppender in Log4j 1.2 is vulnerable to deserialization of untrusted data

Source: GitHub Advisory Database (reviewed) High CVE-2021-4104

Packages

EcosystemPackageAffectedFixed in
Maven log4j:log4j >= 1.2.0, <= 1.2.17 no fix listed
Maven org.zenframework.z8.dependencies.commons:log4j-1.2.17 <= 2.0 no fix listed

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.