Description
The ClamAV AntiVirus software versions 0.99.2 and prior contain a vulnerability that 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 input validation checking mechanisms during certain mail parsing operations (mbox.c operations on bounce messages). If successfully exploited, the ClamAV software could allow a variable pointing to the mail body which could cause a used after being free (use-after-free) instance which may lead to a disruption of services on an affected device to include a denial of service condition.
References (5)
Core 5
Core References
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3550-1/
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3550-2/
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/01/msg00035.html
Release Notes, Vendor Advisory x_refsource_confirm
http://blog.clamav.net/2018/01/clamav-0993-has-been-released.html
Exploit, Issue Tracking, Patch, Vendor Advisory x_refsource_confirm
https://bugzilla.clamav.net/show_bug.cgi?id=11939
Scores
CVSS v3
7.5
EPSS
0.0508
EPSS Percentile
91.3%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-416
Status
published
Products (2)
clamav/clamav
< 0.99.2
debian/debian_linux
7.0
Published
Jan 26, 2018
Tracked Since
Feb 18, 2026