Clam AntiVirus (ClamAV) Excel XLM Parser Denial of Service Vulnerability
CVE-2021-1252

7.5HIGH

Key Information:

Vendor

Cisco
Status
Clamav
Vendor
CVE Published:
8 April 2021

What is CVE-2021-1252?

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.

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Affected Version(s)

ClamAV 0.103.0

ClamAV 0.103.1

References

https://blog.clamav.net/2021/04/clamav-01032-security-pat...
vendor-advisoryx_refsource_CISCO

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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