CVE-2012-0393 Apache Struts's ParameterInterceptor component does not prevent access to public constructors

What is CVE-2012-0393?

CVE-2012-0393 is a medium-severity code injection vulnerability in Apache Struts, published on 8 Jan 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The ParameterInterceptor component in Apache Struts before 2.3.1.1 does not prevent access to public constructors, which allows remote attackers to create or overwrite arbitrary files via a crafted parameter that triggers the creation of a Java object.

Weakness: CWE-264

Which versions are affected by CVE-2012-0393?

4 open source packages ship an affected version, including org.apache.struts.xwork:xwork-core and org.apache.struts:struts2-core. It affects 1 product.

Products include Apache Struts.

How do I fix CVE-2012-0393?

Upgrade org.apache.struts.xwork:xwork-core to 2.2.3.1 or later.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2012-0393 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2012-0393 exists.

Public exploit code: 1 Exploit-DB entry.

Other vulnerabilities in Apache Struts

• CVE-2020-17530 Apache Struts Remote Code Execution Exploited Critical 9.8
• CVE-2017-9791 Apache Struts 1 Improper Input Validation Exploited Critical 9.8
• CVE-2017-5638 Apache Struts Remote Code Execution Exploited Critical 9.8
• CVE-2012-0391 Apache Struts 2 Improper Input Validation Exploited Critical 9.8
• CVE-2018-11776 Apache Struts Remote Code Execution Exploited High 8.1

All Apache Struts vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-hxqq-w4mr-mc62.