CVE-2014-0112 ClassLoader manipulation in Apache Struts

What is CVE-2014-0112?

CVE-2014-0112 is a high-severity code injection vulnerability in Apache Struts, published on 29 Apr 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

ParametersInterceptor in Apache Struts before 2.3.20 does not properly restrict access to the getClass method, which allows remote attackers to "manipulate" the ClassLoader and execute arbitrary code via a crafted request. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-0094.

Weakness: CWE-264

Which versions are affected by CVE-2014-0112?

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

Products include Apache Struts.

How do I fix CVE-2014-0112?

Upgrade org.apache.struts:struts2-core to 2.3.20 or later.

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

Is CVE-2014-0112 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2014-0112 exists.

Public exploit code: 1 Metasploit module and 2 Exploit-DB entries.

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-prjv-jj26-wf8h.