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.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Cisco VPN Client - Integer Overflow Denial of Service EDB-10190 · dos · Nov 21, 2009 · verified
GitHub 1 repository
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alt3kx/CVE-2009-4118 ★ 0 · Apr 2, 2018
Cisco VPN Client - Integer Overflow Denial of Service
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 37419 third-party-advisory
- http://packetstormsecurity.org/0911-exploits/sybsec-adv17.txt
- ADV-2009-3296 vdb-entry
- http://tools.cisco.com/security/center/viewAlert.x?alertId=19445
- 37077 vdb-entry