NULL pointer dereference in ClamAV - CVE-2020-3481

Vulnerability identifier: #VU31824

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-3481

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the EGG archive module. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

ClamAV
Gentoo Linux
Amazon Linux AMI
Fedora
Ubuntu
clamav (Alpine package)
clamav (Ubuntu package)
clamav
RSA Authentication Manager

Install update from vendor's website.

ClamAV - update to 0.102.4
clamav (Alpine package) - update to 0.102.4-r0
clamav (Ubuntu package) - addressed in versions 0.102.4+dfsg-0ubuntu0.12.04.1, 0.102.4+dfsg-0ubuntu0.14.04.1+esm1, 0.102.4+dfsg-0ubuntu0.16.04.1, 0.102.4+dfsg-0ubuntu0.18.04.1, 0.102.4+dfsg-0ubuntu0.20.04.1
clamav - addressed in versions 0.102.4-1.el7, 0.102.4-1.el8, 0.102.4-1.fc31, 0.102.4-1.fc32
RSA Authentication Manager - update to 8.5 Patch 3

• https://blog.clamav.net/2020/07/clamav-01024-security-patch-released.html

• Denial of service in Clam AntiVirus (ClamAV)
• Gentoo update for ClamAV
• NULL pointer dereference in clamav (Alpine package)
• Amazon Linux AMI update for clamav
• Ubuntu update for clamav
• Ubuntu update for clamav
• Fedora 31 update for clamav
• Fedora 32 update for clamav
• Fedora EPEL 7 update for clamav
• Fedora EPEL 8 update for clamav
• RSA Authentication Manager update for third-party components