TheGreenBow IPSec VPN Client 'tgbvpn.sys' NULL Pointer Dereference Denial of Service Vulnerability

Bugtraq ID:	44311
Class:	Failure to Handle Exceptional Conditions
CVE:	CVE-2009-2918
Remote:	Yes
Local:	No
Published:	Aug 17 2009 12:00AM
Updated:	Aug 17 2009 12:00AM
Credit:	Giuseppe 'Evilcry' Bonfa'
Vulnerable:	TheGreenBow IPSec VPN Client 4.61.3
Not Vulnerable:

TheGreenBow IPSec VPN Client 'tgbvpn.sys' NULL Pointer Dereference Denial of Service Vulnerability

TheGreenBow IPSec VPN Client is prone to a denial-of-service vulnerability.

Attackers can exploit this issue to trigger a NULL-pointer dereference and cause a system crash, denying service to legitimate users.

TheGreenBow IPSec VPN Client 4.61.003 is vulnerable; other versions may also be affected.

TheGreenBow IPSec VPN Client 'tgbvpn.sys' NULL Pointer Dereference Denial of Service Vulnerability

Attackers can exploit this issue with readily available tools.

The following proof-of-concept is available:

• /data/vulnerabilities/exploits/44311.c

TheGreenBow IPSec VPN Client 'tgbvpn.sys' NULL Pointer Dereference Denial of Service Vulnerability

Solution:
Currently we are not aware of any vendor-supplied patches. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

TheGreenBow IPSec VPN Client 'tgbvpn.sys' NULL Pointer Dereference Denial of Service Vulnerability

References:

• TheGreenBow VPN Client Homepage (TheGreenBow)