CVE-2023-1108: Infinite loop in sslconduit during close

First published: Tue Feb 28 2023(Updated: )

<a href="https://issues.redhat.com/browse/UNDERTOW-2239">https://issues.redhat.com/browse/UNDERTOW-2239</a> A denial-of-service vulnerability found in Undertow : Latest JDKs from the January 18th release (jdk 11.0.18, and may be jdk 17.0.6) include this change: <a href="https://github.com/openjdk/jdk11u/commit/243a55ef31e9584467482c6159501b5d522a9427#diff-fd78e578d9d538ff23130422a81e277b5482ac752dc158b6dc07737a9c4c3f4bR737-L737">https://github.com/openjdk/jdk11u/commit/243a55ef31e9584467482c6159501b5d522a9427#diff-fd78e578d9d538ff23130422a81e277b5482ac752dc158b6dc07737a9c4c3f4bR737-L737</a> Which is suspected to be the cause of an infinite loop in SslConduit here: <a href="https://github.com/undertow-io/undertow/blob/d508c1328ba5c1ca228bfcc405f2c6b9321a1139/core/src/main/java/io/undertow/protocols/ssl/SslConduit.java#L1002-L1004">https://github.com/undertow-io/undertow/blob/d508c1328ba5c1ca228bfcc405f2c6b9321a1139/core/src/main/java/io/undertow/protocols/ssl/SslConduit.java#L1002-L1004</a> Where there is HandshakeStatus.NEED_WRAP but the status is updated to Status.CLOSED (new in this JDK release) so the loop never terminates.

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

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