CVE-2021-1405 Clam AntiVirus (ClamAV) PDF Parser Denial of Service Vulnerability
An unauthenticated remote attacker can cause a denial of service by sending a crafted email that triggers a null pointer dereference in ClamAV.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-1405?
CVE-2021-1405 is a high-severity vulnerability in Clamav Clamav, published on 8 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the email parsing module in Clam AntiVirus (ClamAV) Software version 0.103.1 and all prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper variable initialization that may result in an NULL pointer read. An attacker could exploit this vulnerability by sending a crafted email to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process crash, resulting in a denial of service condition.
Which versions are affected by CVE-2021-1405?
It affects 2 products.
Products include Clamav Clamav, Debian Debian Linux.
How do I fix CVE-2021-1405?
Upgrade to a fixed version.
Is CVE-2021-1405 being exploited?
There is no known exploitation of CVE-2021-1405 in the wild and no public exploit code.
Other vulnerabilities in Clamav Clamav
Sources
Also known as ALPINE-CVE-2021-1405, CLEANSTART-2026-CT38907, DEBIAN-CVE-2021-1405, DLA-2626-1, GHSA-8r66-4vx2-hf6v, MGASA-2021-0194 and 1 more.