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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
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
Red Hat has released a fix for Red Hat Enterprise Linux 5.



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