CVE-2021-1252

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

Published Apr 8, 2021 CVSS 3.1 · 7.5 High EPSS 2.5% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-6719 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.
Ubuntu USN Ubuntu USN USN-4918-1 ClamAV vulnerabilities
Ubuntu USN Ubuntu USN USN-4918-2 ClamAV vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
cisco
Published
Updated
Nov 8, 2024, 11:25 PM
Reserved
Nov 13, 2020, 12:00 AM
Status
Modified
Published
Apr 8, 2021, 5:15 AM
Modified
Jun 17, 2026, 3:31 AM