Description
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 improper input validation checking mechanisms in mbox.c during certain mail parsing functions of the ClamAV software. An unauthenticated, remote attacker could exploit this vulnerability by sending a crafted email to the affected device. An exploit could trigger a NULL pointer dereference condition when ClamAV scans the malicious email, which may result in a DoS 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, Vendor Advisory x_refsource_confirm
https://bugzilla.clamav.net/show_bug.cgi?id=11945
Scores
CVSS v3
7.5
EPSS
0.0522
EPSS Percentile
91.5%
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-476
Status
published
Products (2)
clamav/clamav
< 0.99.2
debian/debian_linux
7.0
Published
Jan 26, 2018
Tracked Since
Feb 18, 2026