CVE-2016-6795 Path Traversal in Apache Struts

What is CVE-2016-6795?

CVE-2016-6795 is a critical path traversal vulnerability in Apache Struts, published on 20 Sep 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In the Convention plugin in Apache Struts 2.3.x before 2.3.31, and 2.5.x before 2.5.5, it is possible to prepare a special URL which will be used for path traversal and execution of arbitrary code on server side.

Weakness: CWE-22

Which versions are affected by CVE-2016-6795?

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

Products include Apache Struts.

How do I fix CVE-2016-6795?

Upgrade org.apache.struts:struts2-convention-plugin to a fixed version for your release line: 2.3.31 or 2.5.5.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2016-6795 being exploited?

There is no known exploitation of CVE-2016-6795 in the wild and no public exploit code.

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-44hv-jjx7-qfjg.