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Category:   Application (VPN)  >   GnuTLS Vendors:   gnutls.org
GnuTLS Null Pointer Dereference in Processing Client Hello Messages Lets Remote Users Deny Service
SecurityTracker Alert ID:  1020058
SecurityTracker URL:  http://securitytracker.com/id/1020058
CVE Reference:   CVE-2008-1949   (Links to External Site)
Updated:  May 20 2008
Original Entry Date:  May 20 2008
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 2.2.4
Description:   A vulnerability was reported in GnuTLS. A remote user can cause denial of service conditions.

A remote user can send repeated Client Hello handshake messages to trigger a null pointer dereference and cause the target service to crash.

Codenomicon reported this vulnerability via CERT-FI.

The original advisory is available at:

https://www.cert.fi/haavoittuvuudet/advisory-gnutls.html

Impact:   A remote user can cause the target service to crash.
Solution:   The vendor has issued a fixed version (2.2.5).

The vendor's advisory is available at:

http://lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00060.html

Vendor URL:  www.gnu.org/software/gnutls/security.html (Links to External Site)
Cause:   State error
Underlying OS:   Linux (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
May 20 2008 (Red Hat Issues Fix) GnuTLS Null Pointer Dereference in Processing Client Hello Messages Lets Remote Users Deny Service   (bugzilla@redhat.com)
Red Hat has released a fix for Red Hat Enterprise Linux 4.
May 20 2008 (Red Hat Issues Fix) GnuTLS Null Pointer Dereference in Processing Client Hello Messages Lets Remote Users Deny Service   (bugzilla@redhat.com)
Red Hat has released a fix for Red Hat Enterprise Linux 5.



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