A vulnerability exists in GnuTLS that may allow a remote attacker to cause a denial of service.
GnuTLS contains a vulnerability in gnults-serv that may result in a denial of service when handling a sequence of specially crafted packets. According to CERT-FI Vulnerability Advisory on GnuTLS:
We have found the flaw by doing complete TLS 1.0 handshake followed by a encrypted Client-Hello message to start abbreviated handshake. In this case the the Record Length field of the TLS Record containing the Client Hello contains erroneus value '8' triggering the bug. Note that this might not be the only way to reproduce the bug.
A remote, unauthorized attacker may be able to cause a denial of service.
Upgrade or Apply Patch
This issue was reported in GnuTLS Security Advisory SA-2008-01. GnuTLS credits Ossi Herrala and Jukka Taimisto from the CROSS project at Codenomicon Ltd. for reporting this issue.
This document was written by Chris Taschner.
|Date First Published:||2008-05-30|
|Date Last Updated:||2008-05-30 13:41 UTC|