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has been released. The new version includes many new and advanced
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TITLE:
Cisco VPN Client IPSec Driver Local Denial of Service

SECUNIA ADVISORY ID:
SA28472

VERIFY ADVISORY:
http://secunia.com/advisories/28472/

CRITICAL:
Not critical

IMPACT:
DoS

WHERE:
Local system

SOFTWARE:
Cisco VPN Client 5.x
http://secunia.com/product/14325/

DESCRIPTION:
mu-b has reported a vulnerability in Cisco VPN Client, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service).

The vulnerability is caused due to an error when handling certain
IOCTLs sent to the IPSec driver (CVPNDRVA.sys). This can be exploited
to cause a memory corruption within kernel space by sending specially
crafted IOCTLs to the affected driver, resulting in a system crash.

The vulnerability is reported in CVPNDRVA.sys version 5.0.02.0090.
Other versions may also be affected.

SOLUTION:
Restrict access to trusted users.

PROVIDED AND/OR DISCOVERED BY:
mu-b, Digit-Labs

ORIGINAL ADVISORY:
http://milw0rm.com/exploits/4911

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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