JVN#79099262: Apache Struts 2 vulnerable to an arbitrary Java method execution

Apache Struts 2 is a framework to create Java web applications. Apache Struts 2 contains an arbitrary Java method execution vulnerability due to improper conversion in OGNL expression if a non-string property is contained in action.

Impact

If a remote attacker sends a malformed request parameter to a vulnerable system, an arbitrary Java method may be executed. As a result, information such as environment variables may be disclosed, a denial-of-service (DoS) attack may be conducted, or an arbitrary OS command may be executed.

Solution

Update the Software
Apply the latest version according to the information provided by the developer.
The fix for this issue was contained in Apache Struts 2.2.3.1 released on September 2011.

According to the developer, Apache Struts 2.0.x is no longer supported, thus it is strongly recommended that users should upgrade to Apache Struts 2.3.x.

Products Affected

• Apache Struts versions prior to 2.2.3
• Apache Struts versions 2.0.x