Vulnerability · Published Aug 10, 2022 · Assigned by cisco
CVE-2022-20792
High 7.8
In plain English
A high-severity out-of-bounds read in Clam AntiVirus (ClamAV) from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
A vulnerability in the regex module used by the signature database load module of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an authenticated, local attacker to crash ClamAV at database load time, and possibly gain code execution. The vulnerability is due to improper bounds checking that may result in a multi-byte heap buffer overwflow write. An attacker could exploit this vulnerability by placing a crafted CDB ClamAV signature database file in the ClamAV database directory. An exploit could allow the attacker to run code as the clamav user.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | clamav | 0.103.6+dfsg-1 | DEBIAN-CVE-2022-20792 |
| Debian:13 | clamav | 0.103.6+dfsg-1 | DEBIAN-CVE-2022-20792 |
| Debian:14 | clamav | 0.103.6+dfsg-1 | DEBIAN-CVE-2022-20792 |
| Ubuntu:22.04:LTS | clamav | 0.103.6+dfsg-0ubuntu0.22.04.1 | USN-5423-1 |
| Ubuntu:22.04:LTS | clamav | 0.103.6+dfsg-0ubuntu0.22.04.1 | UBUNTU-CVE-2022-20792 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Clam AntiVirus (ClamAV) | unspecified – through 0.104.20.104.0 – before unspecifiedunspecified – through 0.103.5 |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- https://blog.clamav.net/2022/05/clamav-01050-01043-01036-released.html vendor-advisory
- GLSA-202310-01 vendor-advisory