Denial of service in Clam AntiVirus (ClamAV)

1) NULL pointer dereference

EUVDB-ID: #VU31824

Risk: Medium

CVSSv4.0: 6.6 [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/E:U/U:Green]

CVE-ID: CVE-2020-3481

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ClamAV: 0.102.0 - 0.102.3

CPE2.3

• cpe:2.3:a:clamav:clamav_antivirus:0.102.0:*:*:*:*:*:*:*
• cpe:2.3:a:clamav:clamav_antivirus:0.102.1:*:*:*:*:*:*:*
• cpe:2.3:a:clamav:clamav_antivirus:0.102.2:*:*:*:*:*:*:*
• cpe:2.3:a:clamav:clamav_antivirus:0.102.3:*:*:*:*:*:*:*

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.