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VPR Score: 6.7
Synopsis
The remote Windows host has an antivirus application installed that is affected by multiple vulnerabilities.
Description
The version of the Comodo security product installed on the remote Windows host is affected by multiple vulnerabilities:
- A Local Privilege Escalation due to CmdAgent's handling of COM clients. A local process can bypass the signature check enforced by CmdAgent via process hollowing which can then allow the process to invoke sensitive COM methods in CmdAgent such as writing to the registry with SYSTEM privileges.(CVE-2019-3969)
- An Arbitrary File Write due to Cavwp.exe handling of Comodo's Antivirus database. Cavwp.exe loads Comodo antivirus definition database in unsecured global section objects, allowing a local low privileged process to modify this data directly and change virus signatures. (CVE-2019-3970)
- A local Denial of Service affecting CmdVirth.exe via its LPC port cmdvrtLPCServerPort. A low privileged local process can connect to this port and send an LPC_DATAGRAM, which triggers an Access Violation due to hardcoded NULLs used for Source parameter in a memcpy operation that is called for this handler. This results in CmdVirth.exe and its child svchost.exe instances to terminate. (CVE-2019-3971)
- A Denial of Service affecting CmdAgent.exe via an unprotected section object <GUID>_CisSharedMemBuff. This section object is exposed by CmdAgent and contains a SharedMemoryDictionary object, which allows a low privileged process to modify the object data causing CmdAgent.exe to crash. (CVE-2019-3972)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
No known fix, refer to vendor for further information.