CVE-2019-3971 Null dereference in Comodo Antivirus
A local attacker can cause a denial of service in Comodo Antivirus by triggering a null pointer dereference in the virtualization component.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-3971?
CVE-2019-3971 is a medium-severity vulnerability in Comodo Antivirus, published on 17 Jul 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2019-3971?
It affects 1 product.
Products include Comodo Antivirus.
How do I fix CVE-2019-3971?
No fix has been published for CVE-2019-3971 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-3971 being exploited?
There is no known exploitation of CVE-2019-3971 in the wild and no public exploit code.
Other vulnerabilities in Comodo Antivirus
Sources
Also known as GHSA-v3cp-w37g-979x.