CVE-2017-9793 The REST Plugin in Apache Struts is using an outdated XStream library

What is CVE-2017-9793?

CVE-2017-9793 is a high-severity denial of service 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

The REST Plugin in Apache Struts 2.1.x, 2.3.7 through 2.3.33 and 2.5 through 2.5.12 is using an outdated XStream library which is vulnerable and allow perform a DoS attack using malicious request with specially crafted XML payload.

Weakness: CWE-20

Which versions are affected by CVE-2017-9793?

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

Products include Apache Struts.

How do I fix CVE-2017-9793?

Upgrade org.apache.struts:struts2-rest-plugin to a fixed version for your release line: 2.3.34 or 2.5.13.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2017-9793 being exploited?

There is no known exploitation of CVE-2017-9793 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-vwxj-6m5m-rrvh.