Bug 2117383 (CVE-2022-20792)

Summary: CVE-2022-20792 ClamAV: Improper bounds checking leading to multi-byte heap buffer overflow write.
Product: [Other] Security Response Reporter: Zack Miele <zmiele>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: anon.amish, bennie.joubert, gbcox, hanspeter.gosteli, janfrode, j, lee.jnk, ondrejj, orion, pgnet.dev, redhat-bugzilla, rh-bugzilla, sergio, steve
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: ClamAV 0.105.0, ClamAV 0.104.3, ClamAV 0.103.6 Doc Type: If docs needed, set a value
Doc Text:
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Clone Of: Environment:
Last Closed: 2022-08-16 14:07:49 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Zack Miele 2022-08-10 20:26:01 UTC 
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.

https://blog.clamav.net/2022/05/clamav-01050-01043-01036-released.html
Comment 1 Orion Poplawski 2022-08-14 04:34:07 UTC 
FWIW - We are at 0.103.7 in Fedora and EPEL.