VAR-200702-0108

Vulnerability from variot - Updated: 2023-12-18 13:25

cmdmon.sys in Comodo Firewall Pro (formerly Comodo Personal Firewall) 2.4.16.174 and earlier does not validate arguments that originate in user mode for the (1) NtCreateSection, (2) NtOpenProcess, (3) NtOpenSection, (4) NtOpenThread, and (5) NtSetValueKey hooked SSDT functions, which allows local users to cause a denial of service (system crash) and possibly gain privileges via invalid arguments. Comodo Firewall Pro is prone to a denial-of-service vulnerability. Local attackers may exploit this vulnerability to cause denial of service. The Comodo firewall hooks many functions in SSDT, and there are at least 7 cases where there are no parameters for verifying user mode. Due to a bug in the cmdmon.sys driver, a denial of service may result when calling NtConnectPort, NtCreatePort, NtCreateSection, NtOpenProcess, NtOpenSection, NtOpenThread, and NtSetValueKey

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