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GHSA-5gg7-5wv8-4gcj

Undertow Request Smuggling vulnerability

Source: GitHub Advisory Database (reviewed) High CVE-2017-12165

Packages

EcosystemPackageAffectedFixed in
Maven io.undertow:undertow-core < 1.3.31 1.3.31
Maven io.undertow:undertow-core >= 1.4.0, < 1.4.17 1.4.17
Maven io.undertow:undertow-core >= 2.0.0.Alpha1, < 2.0.0.Beta1 2.0.0.Beta1

Details

As written in the advisory (Markdown source, shown as plain text).

It was discovered that Undertow before 1.4.17, 1.3.31 and 2.0.0 processes http request headers with unusual whitespaces which can cause possible http request smuggling.

References

External links from the advisory. They lead to third-party sites.