CVE-2022-20792
Last modified
CVE-2022-20792 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.50% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Clamav | Clamav | <= 0.103.5 |
| Clamav | Clamav | >= 0.104.0, <= 0.104.2 |
References
- https://blog.clamav.net/2022/05/clamav-01050-01043-01036-released.htmlRelease Notes, Vendor Advisory
- https://blog.clamav.net/2022/05/clamav-01050-01043-01036-released.htmlRelease Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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