CVE-2019-15961 Clam AntiVirus (ClamAV) Software Email Parsing Vulnerability
Remote attackers can cause a denial of service in ClamAV by sending crafted email files that trigger inefficient MIME parsing and indefinite scan times.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-15961?
CVE-2019-15961 is a high-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 15 Jan 2020. 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 Clam AntiVirus (ClamAV) Software versions 0.102.0, 0.101.4 and prior could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to inefficient MIME parsing routines that result in extremely long scan times of specially formatted email files. An attacker could exploit this vulnerability by sending a crafted email file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process to scan the crafted email file indefinitely, resulting in a denial of service condition.
Which versions are affected by CVE-2019-15961?
It affects 4 products.
Linux distribution packages (21)
clamav SUSE:Enterprise Storage 5 | All versions | 0.100.3-33.29.1 |
clamav SUSE:HPE Helion OpenStack 8 | All versions | 0.100.3-33.29.1 |
clamav SUSE:Linux Enterprise Desktop 12 SP4 | All versions | 0.100.3-33.29.1 |
clamav SUSE:Linux Enterprise Module for Basesystem 15 | All versions | 0.100.3-3.17.2 |
clamav SUSE:Linux Enterprise Module for Basesystem 15 SP1 | All versions | 0.100.3-3.17.2 |
clamav SUSE:Linux Enterprise Point of Sale 11 SP3 | All versions | 0.100.3-0.20.29.1 |
clamav SUSE:Linux Enterprise Server 11 SP4-LTSS | All versions | 0.100.3-0.20.29.1 |
clamav SUSE:Linux Enterprise Server 12 SP1-LTSS | All versions | 0.100.3-33.29.1 |
clamav SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 0.100.3-33.29.1 |
clamav SUSE:Linux Enterprise Server 12 SP2-LTSS | All versions | 0.100.3-33.29.1 |
clamav SUSE:Linux Enterprise Server 12 SP3-BCL | All versions | 0.100.3-33.29.1 |
clamav SUSE:Linux Enterprise Server 12 SP3-LTSS | All versions | 0.100.3-33.29.1 |
clamav SUSE:Linux Enterprise Server 12 SP4 | All versions | 0.100.3-33.29.1 |
clamav SUSE:Linux Enterprise Server for SAP Applications 12 SP1 | All versions | 0.100.3-33.29.1 |
clamav SUSE:Linux Enterprise Server for SAP Applications 12 SP2 | All versions | 0.100.3-33.29.1 |
clamav SUSE:Linux Enterprise Server for SAP Applications 12 SP3 | All versions | 0.100.3-33.29.1 |
clamav SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 0.100.3-33.29.1 |
clamav SUSE:OpenStack Cloud 7 | All versions | 0.100.3-33.29.1 |
clamav SUSE:OpenStack Cloud 8 | All versions | 0.100.3-33.29.1 |
clamav SUSE:OpenStack Cloud Crowbar 8 | All versions | 0.100.3-33.29.1 |
clamav openSUSE:Leap 15.1 | All versions | 0.100.3-lp151.2.6.1 |
Products include Canonical Ubuntu Linux, Cisco Email Security Appliance Firmware, Clamav Clamav, Debian Debian Linux.
How do I fix CVE-2019-15961?
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-2019-15961 being exploited?
There is no known exploitation of CVE-2019-15961 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as ALPINE-CVE-2019-15961, CLEANSTART-2026-ER78752, DEBIAN-CVE-2019-15961, DLA-2108-1, GHSA-4w5h-pwr8-qh64, MGASA-2019-0361 and 8 more.