CVE-2021-1404 HIGH

CVE-2021-1404: Clam AntiVirus (ClamAV) Email Parser Denial of Service Vulnerability

Vendor Cisco
Product ClamAV
Weakness CWE-20 · Input validation
Published April 8, 2021
Last update November 8, 2024

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

A vulnerability in the PDF parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0 and 0.103.1 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper buffer size tracking that may result in a heap buffer over-read. An attacker could exploit this vulnerability by sending a crafted PDF file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash, resulting in a denial of service condition.

Key dates

02Disclosure timeline

April 8, 2021 CVE published
November 8, 2024 Record updated