Description
Netty project is an event-driven asynchronous network application framework. Starting in version 4.1.83.Final and prior to 4.1.86.Final, when calling `DefaultHttpHeadesr.set` with an _iterator_ of values, header value validation was not performed, allowing malicious header values in the iterator to perform HTTP Response Splitting. This issue has been patched in version 4.1.86.Final. Integrators can work around the issue by changing the `DefaultHttpHeaders.set(CharSequence, Iterator)` call, into a `remove()` call, and call `add()` in a loop over the iterator of values.
Remediation
References
https://github.com/netty/netty/commit/fe18adff1c2b333acb135ab779a3b9ba3295a1c4
https://github.com/netty/netty/issues/13084
https://github.com/netty/netty/pull/12760
https://github.com/netty/netty/security/advisories/GHSA-hh82-3pmq-7frp
https://lists.debian.org/debian-lts-announce/2023/01/msg00008.html
https://security.netapp.com/advisory/ntap-20230113-0004/
https://www.debian.org/security/2023/dsa-5316
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