ClamAV Double-free Vulnerability in the OLE2 File Parser
CVE-2022-20803

8.6HIGH

Key Information:

Vendor

Cisco
Status
Clamav
Vendor
CVE Published:
17 February 2023

What is CVE-2022-20803?

Clam AntiVirus versions 0.104.0 through 0.104.2 contain a vulnerability in the OLE2 file parser that may be exploited by unauthenticated remote attackers. By crafting a malicious OLE2 file and submitting it for scanning, an attacker can trigger a double-free condition due to improper handling of the realloc function, resulting in a crash of the scanning process. This could lead to a denial of service, disrupting the functionality of ClamAV on the affected device.

Affected Version(s)

ClamAV 0.104.0

References

https://blog.clamav.net/2022/05/clamav-01050-01043-01036-...
vendor-advisory
https://security.gentoo.org/glsa/202310-01
vendor-advisory

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.