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CVE-2012-0391

9.8 · CRITICALActively Exploited

The ExceptionDelegator component in Apache Struts before 2.2.3.1 interprets parameter values as OGNL expressions during certain exception handling for mismatched data types of properties, which all…

Published Jan 8, 2012apacheCWE-94EPSS 75.60%

Overview

CVE-2012-0391 is a critical-severity vulnerability affecting apache struts. It was published on January 8, 2012 and has a CVSS 3.1 base score of 9.8 (CRITICAL). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The ExceptionDelegator component in Apache Struts before 2.2.3.1 interprets parameter values as OGNL expressions during certain exception handling for mismatched data types of properties, which allows remote attackers to execute arbitrary Java code via a crafted parameter.

Remediation

Check the references section for vendor advisories and patches from apache. Update struts to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
apachestruts>= 0, < 2.2.3.1Affected

References

Refarchives.neohapsis.com/archives/bugtraq/2012-01/0031.htmlRefsecunia.com/advisories/47393Refstruts.apache.org/2.x/docs/s2-008.htmlRefstruts.apache.org/2.x/docs/version-notes-2311.htmlRefwww.exploit-db.com/exploits/18329Refissues.apache.org/jira/browse/WW-3668Refwww.sec-consult.com/files/20120104-0_Apache_Struts2_Multiple_Critical_Vulnerabilities.txtRefarchives.neohapsis.com/archives/bugtraq/2012-01/0031.htmlRefsecunia.com/advisories/47393Refstruts.apache.org/2.x/docs/s2-008.html

How CyberStrike helps

Frequently asked questions

What is CVE-2012-0391?

CVE-2012-0391 is a critical-severity vulnerability affecting apache struts. It was published on January 8, 2012 and has a CVSS 3.1 base score of 9.8 (CRITICAL). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2012-0391?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2012-0391?

Check the references section for vendor advisories and patches from apache. Update struts to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2012-0391?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2012-0391 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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