Comodo Antivirus up to 12.0.0.6810 CmdVirth.exe Source memory corruption

Summaryinfo

A vulnerability has been found in Comodo Antivirus up to 12.0.0.6810 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file CmdVirth.exe. The manipulation of the argument Source as part of Parameter leads to memory corruption. This vulnerability is documented as CVE-2019-3971. The attack needs to be performed locally. There is not any exploit available.

Detailsinfo

A vulnerability was found in Comodo Antivirus up to 12.0.0.6810 (Anti-Malware Software) and classified as problematic. This issue affects an unknown part of the file CmdVirth.exe. The manipulation of the argument Source as part of a Parameter leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. The summary by CVE is:

Comodo Antivirus versions up to 12.0.0.6810 are vulnerable to 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.

The weakness was released 07/17/2019. The identification of this vulnerability is CVE-2019-3971 since 01/03/2019. An attack has to be approached locally. A simple authentication is necessary for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/01/2023).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Entries connected to this vulnerability are available at VDB-138280, VDB-138279, VDB-138283 and VDB-138282. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Anti-Malware Software

Vendor

• Comodo

Name

• Antivirus

Version

• 12.0.0.6810

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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