CVE-2022-20792
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.53% probability · 44th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125, CWE-787
- Affected
- clamav/clamav
- Source
- psirt@cisco.com
References
- https://blog.clamav.net/2022/05/clamav-01050-01043-01036-released.htmlRelease Notes, Vendor Advisory
- https://security.gentoo.org/glsa/202310-01
- https://blog.clamav.net/2022/05/clamav-01050-01043-01036-released.htmlRelease Notes, Vendor Advisory
- https://security.gentoo.org/glsa/202310-01
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.