CVE-2021-1252CWE-20

Clam AntiVirus (ClamAV) Excel XLM Parser Denial of Service Vulnerability

High · published April 8, 2021

CVSS v3.1
7.5
EPSS
3%
Percentile
84.7
In the wild
Unconfirmed
What it is

A vulnerability in the Excel XLM macro 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 error handling that may result in an infinite loop. An attacker could exploit this vulnerability by sending a crafted Excel file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process hang, resulting in a denial of service condition.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.02516 · 84.7th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2021-04-08T04:25Z
EPSS history
Timeline
  • 08 APR 04:25Z
    Clam AntiVirus (ClamAV) Excel XLM Parser Denial of Service Vulnerability
    cvelistv5