Description
cmdmon.sys in Comodo Firewall Pro (formerly Comodo Personal Firewall) before 2.4.16.174 does not validate arguments that originate in user mode for the (1) NtConnectPort and (2) NtCreatePort hooked SSDT functions, which allows local users to cause a denial of service (system crash) and possibly gain privileges via invalid arguments.
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
- Comodo Firewall 2.3.6 - 'CMDMon.SYS' Multiple Denial of Service Vulnerabilities EDB-29558 · dos · Feb 1, 2007 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- comodofirewallpro-cmdmon-dos(32059) vdb-entry
- 22357 vdb-entry
- 20070201 Comodo Multiple insufficient argument validation of hooked SSDT function Vulnerability mailing-list
- 1017580 vdb-entry
- http://www.matousec.com/info/advisories/Comodo-Multiple-insufficient-argument-validation-of-hooked-SSDT-functions.php