CVE-2019-1787 Clam AntiVirus PDF Denial of Service Vulnerability
Remote attackers can cause a denial of service in ClamAV by sending crafted PDF files that trigger a heap buffer out-of-bounds read and crash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-1787?
CVE-2019-1787 is a high-severity denial of service vulnerability in Clamav Clamav, published on 8 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the Portable Document Format (PDF) scanning functionality of Clam AntiVirus (ClamAV) Software versions 0.101.1 and prior could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a lack of proper data handling mechanisms within the device buffer while indexing remaining file data on an affected device. An attacker could exploit this vulnerability by sending crafted PDF files to an affected device. A successful exploit could allow the attacker to cause a heap buffer out-of-bounds read condition, resulting in a crash that could result in a denial of service condition on an affected device.
Which versions are affected by CVE-2019-1787?
It affects 3 products.
Products include Clamav Clamav, Debian Debian Linux, Opensuse Leap.
How do I fix CVE-2019-1787?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-1787 being exploited?
There is no known exploitation of CVE-2019-1787 in the wild and no public exploit code.
Other vulnerabilities in Clamav Clamav
Sources
Also known as ALPINE-CVE-2019-1787, CLEANSTART-2026-MK79765, DEBIAN-CVE-2019-1787, GHSA-8pw7-c9xp-v252, UBUNTU-CVE-2019-1787.