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.
Metrics
CVSS 3.0 7.5/10
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | ClamAV AntiVirus software versions 0.99.2 and prior | ClamAV AntiVirus software versions 0.99.2 and prior |
References
- http://blog.clamav.net/2018/01/clamav-0993-has-been-released.htmlRelease Notes, Vendor Advisory
- https://bugzilla.clamav.net/show_bug.cgi?id=11939Exploit, Issue Tracking, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/01/msg00035.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/3550-1/
- https://usn.ubuntu.com/3550-2/
- http://blog.clamav.net/2018/01/clamav-0993-has-been-released.htmlRelease Notes, Vendor Advisory
- https://bugzilla.clamav.net/show_bug.cgi?id=11939Exploit, Issue Tracking, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/01/msg00035.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/3550-1/
- https://usn.ubuntu.com/3550-2/
Timeline
- Published
- Jan 26, 2018
- Last modified
- Jun 17, 2026
- NVD status
- Modified