CVE-2020-7238 HTTP Request Smuggling in Netty

What is CVE-2020-7238?

CVE-2020-7238 is a high-severity vulnerability in Debian Debian Linux, published on 27 Jan 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header. This issue exists because of an incomplete fix for CVE-2019-16869.

Weakness: CWE-444

Which versions are affected by CVE-2020-7238?

2 open source packages ship an affected version, including io.netty:netty-handler. It affects 6 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Netty Netty, Redhat Jboss Enterprise Application Platform, Redhat Jboss Enterprise Application Platform Text-Only Advisories, Redhat Openshift Application Runtimes Text-Only Advisories.

How do I fix CVE-2020-7238?

Upgrade io.netty:netty-handler to 4.1.45 or later.

Is CVE-2020-7238 being exploited?

There is no known exploitation of CVE-2020-7238 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2020-7238, GHSA-ff2w-cq2g-wv5f, UBUNTU-CVE-2020-7238.