CVE-2016-4993 Improper Neutralization of CRLF Sequences in Wildfly Undertow

What is CVE-2016-4993?

CVE-2016-4993 is a medium-severity vulnerability in Redhat Jboss Enterprise Application Platform, published on 26 Sep 2016. 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

CRLF injection vulnerability in the Undertow web server in WildFly 10.0.0, as used in Red Hat JBoss Enterprise Application Platform (EAP) 7.x before 7.0.2, allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via unspecified vectors.

Weakness: CWE-93, CWE-113

Which versions are affected by CVE-2016-4993?

2 open source packages ship an affected version, including org.wildfly:wildfly-undertow. It affects 2 products.

Products include Redhat Jboss Enterprise Application Platform, Redhat Jboss Wildfly Application Server.

How do I fix CVE-2016-4993?

Upgrade org.wildfly:wildfly-undertow to 11.0.0.Final or later.

Is CVE-2016-4993 being exploited?

There is no known exploitation of CVE-2016-4993 in the wild and no public exploit code.

Other vulnerabilities in Redhat Jboss Enterprise Application Platform

• CVE-2017-12149 Red Hat JBoss Application Server Remote Code Execution Exploited Critical 9.8
• CVE-2010-1428 Red Hat JBoss Information Disclosure Exploited Medium 5.9
• CVE-2010-0738 Red Hat JBoss Authentication Bypass Exploited Low 3.7
• CVE-2016-3690 Deserialization in n/a Critical 9.8
• CVE-2017-7504 Deserialization in JBoss Critical 9.8

All Redhat Jboss Enterprise Application Platform vulnerabilities

Sources

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

Also known as CVE-2016-6339, DEBIAN-CVE-2016-4993, GHSA-qcqr-hcjq-whfq, UBUNTU-CVE-2016-4993.