PT-2021-7008 · Clamav+5 · Clamav+5

Alexander Patrakov · Published 2021-11-02 · Updated 2024-06-15 · CVE-2022-20796

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions ClamAV versions 0.103.5 and earlier ClamAV versions 0.104.2 and earlier

Description A vulnerability in Clam AntiVirus (ClamAV) could allow an authenticated, local attacker to cause a denial of service condition on an affected device. The issue is related to a null pointer dereference error when checking the scan verdict cache. Exploitation of the vulnerability may allow a remote attacker to send specially crafted data to the application and perform a denial of service (DoS) attack.

Recommendations For ClamAV versions 0.103.5 and earlier, update to a version later than 0.103.5 to resolve the issue. For ClamAV versions 0.104.2 and earlier, update to a version later than 0.104.2 to resolve the issue. As a temporary workaround, consider restricting access to the ClamAV scanning library to minimize the risk of exploitation.

Fix

DoS

Improper Resource Release

Untrusted Pointer Dereference

NULL Pointer Dereference

Weakness Enumeration

CWE-404

CWE-822

CWE-476

Related Identifiers

ALT-PU-2022-1906

ALT-PU-2022-1924

ALT-PU-2022-1939

ALT-PU-2022-1945

AZL-9668

BDU:2022-02931

CVE-2022-20796

DLA-3042-1

MGASA-2022-0187

OPENSUSE-SU-2022_1644-1

OPENSUSE-SU-2024:12047-1

SUSE-SU-2022:1644-1

SUSE-SU-2022:1647-1

SUSE-SU-2022_1644-1

SUSE-SU-2022_1647-1

USN-5423-1

USN-5423-2

Affected Products

Alt Linux

Clamav

Linuxmint

Red Os

Suse

Ubuntu

References · 56

• https://safe-surf.ru/specialists/bulletins-nkcki/678884 · Security Note
• https://ubuntu.com/security/CVE-2022-20785 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-20796 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5423-2 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7RV6BLIATIJE74SQ6NG5ZC4JK5MMDQ2R · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-02931 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2022:1644-1 · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-dos-vL9x58p4 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-20796 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-20796 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-20796 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5423-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-20796 · Security Note
• https://osv.dev/vulnerability/USN-5423-1 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N4NNBIJVG6Z4PDIKUZXTYXICYUAYAZ56 · Vendor Advisory