CVE-2016-6347 Improper Neutralization of Input During Web Page Generation in RESTEasy

What is CVE-2016-6347?

CVE-2016-6347 is a medium-severity cross-site scripting vulnerability in n/a, published on 20 Apr 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Cross-site scripting (XSS) vulnerability in the default exception handler in RESTEasy allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Weakness: CWE-79

Which versions are affected by CVE-2016-6347?

4 open source packages ship an affected version, including org.jboss.resteasy:resteasy-client. It affects 1 product.

Products include Redhat Resteasy.

How do I fix CVE-2016-6347?

Upgrade org.jboss.resteasy:resteasy-client to a fixed version for your release line: 3.0.20.Final or 3.1.0.CR1.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2016-6347 being exploited?

There is no known exploitation of CVE-2016-6347 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2016-9606 JBoss RESTEasy vulnerable to Improper Input Validation High 8.1
• CVE-2018-1051 Deserialization of Untrusted Data in org.jboss.resteasy:resteasy-yaml-provider High 8.1
• CVE-2016-6346 Denial of service in JBoss resteasy High 7.5
• CVE-2016-6345 Exposure of Sensitive Information to an Unauthorized Actor in RESTEasy Medium 6.5
• CVE-2014-7839 XML External Entity Reference in RESTEasy Medium 6.4

Sources

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

Also known as DEBIAN-CVE-2016-6347, GHSA-r346-rmrg-qpgh, UBUNTU-CVE-2016-6347.