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 or potentially execute arbitrary code on an affected device. The vulnerability is due to improper input validation checking mechanisms in the message parsing function on an affected system. An unauthenticated, remote attacker could exploit this vulnerability by sending a crafted email to the affected device. This action could cause a messageAddArgument (in message.c) buffer overflow condition when ClamAV scans the malicious email, allowing the attacker to potentially cause a DoS condition or execute arbitrary code on an affected device.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://usn.ubuntu.com/3550-1/ | vendor advisory |
| https://usn.ubuntu.com/3550-2/ | vendor advisory |
| https://lists.debian.org/debian-lts-announce/2018/01/msg00035.html | third party advisory mailing list |
| http://blog.clamav.net/2018/01/clamav-0993-has-been-released.html | release notes vendor advisory |
| https://bugzilla.clamav.net/show_bug.cgi?id=11944 | vendor advisory issue tracking exploit |