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Category:   Application (VPN)  >   GnuTLS Vendors:   gnutls.org
GnuTLS Server Hello Session ID Buffer Overflow Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1030314
SecurityTracker URL:  http://securitytracker.com/id/1030314
CVE Reference:   CVE-2014-3466   (Links to External Site)
Date:  Jun 2 2014
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to versions 3.1.25, 3.2.15, 3.3.4
Description:   A vulnerability was reported in GnuTLS. A remote user can execute arbitrary code on the target system.

A remote server can return a specially crafted Server Hello session ID value to trigger a buffer overflow and execute arbitrary code on the target client system.

The vulnerability resides in the read_server_hello() and _gnutls_read_server_hello() functions in the 'session_id_len' parameter.

Impact:   A remote server can execute arbitrary code on the target user's system.
Solution:   The vendor has issued a fix (3.1.25, 3.2.15, 3.3.4).

The vendor's advisory is available at:

http://www.gnutls.org/security.html#GNUTLS-SA-2014-3

Vendor URL:  www.gnutls.org/security.html#GNUTLS-SA-2014-3 (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jun 4 2014 (Red Hat Issues Fix) GnuTLS Server Hello Session ID Buffer Overflow Lets Remote Users Execute Arbitrary Code
Red Hat has issued a fix for Red Hat Enterprise Linux 5.
Jun 4 2014 (Red Hat Issues Fix) GnuTLS Server Hello Session ID Buffer Overflow Lets Remote Users Execute Arbitrary Code
Red Hat has issued a fix for Red Hat Enterprise Linux 6.



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