CVE-2018-14642 Exposure of Sensitive Information to an Unauthorized Actor in Undertow

What is CVE-2018-14642?

CVE-2018-14642 is a medium-severity vulnerability in Redhat Jboss Enterprise Application Platform, published on 18 Sep 2018. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An information leak vulnerability was found in Undertow. If all headers are not written out in the first write() call then the code that handles flushing the buffer will always write out the full contents of the writevBuffer buffer, which may contain data from previous requests.

Weakness: CWE-200

Which versions are affected by CVE-2018-14642?

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

Products include Redhat Jboss Enterprise Application Platform, Redhat Undertow.

How do I fix CVE-2018-14642?

Upgrade io.undertow:undertow-core to 2.0.19.FINAL or later.

Is CVE-2018-14642 being exploited?

There is no known exploitation of CVE-2018-14642 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 DEBIAN-CVE-2018-14642, GHSA-vf6r-mmhc-3xcm, UBUNTU-CVE-2018-14642.