Double Free in Cisco Clamav
CVE-2022-20803
A vulnerability in the OLE2 file parser of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device.The vulnerability is due to incorrect use of the realloc function that may result in a double-free. An attacker could exploit this vulnerability by submitting a crafted OLE2 file to be scanned by ClamAV on the affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash, resulting in a denial of service condition.
Vulnerability class: Double Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.011 (63.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
- Cisco Clamav — versions 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)
- security.gentoo.org/glsa/202310-01 (vendor-advisory)
Frequently asked questions
- What is CVE-2022-20803?
- CVE-2022-20803 is a high-severity vulnerability in Cisco Clamav, classified under Double Free. CVSS score: 8.6/10. Published 2023-02-17.
- How severe is CVE-2022-20803?
- High severity. CVSS v3 base score is 8.6 out of 10.
- Is CVE-2022-20803 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.