Description
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final, io.netty.handler.codec.xml.XmlFrameDecoder.decode() failed to preserve closing-tag parser state across invocations, so an unauthenticated remote attacker could trickle-feed repeated </ sequences that repeatedly rescanned the accumulated buffer and exhausted an EventLoop thread's CPU, causing denial of service with a maxFrameLength of 1 MB. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
netty netty
< 4.1.136.Finalaffected>= 4.2.0.Final, < 4.2.16.Finalaffected
References
- https://github.com/netty/netty/security/advisories/GHSA-v74w-7mr3-4qg3 ↗
- https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b ↗
- https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6 ↗
- https://github.com/netty/netty/releases/tag/netty-4.1.136.Final ↗
- https://github.com/netty/netty/releases/tag/netty-4.2.16.Final ↗