Vulnerability CVE-2009-4118
Published: 2009-11-30   Modified: 2012-02-13

Description:
The StartServiceCtrlDispatcher function in the cvpnd service (cvpnd.exe) in Cisco VPN client for Windows before 5.0.06.0100 does not properly handle an ERROR_FAILED_SERVICE_CONTROLLER_CONNECT error, which allows local users to cause a denial of service (service crash and VPN connection loss) via a manual start of cvpnd.exe while the cvpnd service is running.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Cisco VPN Client Integer overflow (DOS) Proof Of Concept Code
alt3kx
03.12.2009

Type:

CWE-Other

CVSS2 => (AV:L/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
2.1/10
2.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Cisco -> Vpn client 

 References:
http://www.vupen.com/english/advisories/2009/3296
http://www.securityfocus.com/bid/37077
http://tools.cisco.com/security/center/viewAlert.x?alertId=19445
http://secunia.com/advisories/37419
http://packetstormsecurity.org/0911-exploits/sybsec-adv17.txt
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