Out-of-bounds Read in Cisco Clam Antivirus (Clamav)
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 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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Cisco Clam Antivirus (Clamav) — versions unspecified, 0.104.0
- Clamav
Weakness classification (CWE)
Public proof-of-concept exploits
References
- blog.clamav.net/2022/05/clamav-01050-01043-01036-released.html (vendor-advisory, Release Notes, Vendor Advisory)
- security.gentoo.org/glsa/202310-01 (vendor-advisory)
Frequently asked questions
- What is CVE-2022-20792?
- CVE-2022-20792 is a high-severity vulnerability in Cisco Clam Antivirus (Clamav), classified under Out-of-bounds Read. CVSS score: 7.8/10. Published 2022-08-10.
- How severe is CVE-2022-20792?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2022-20792 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.