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

2021-04-0800:00:00

CWE-20

cisco

www.cve.org

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.002 Low

EPSS

Percentile

59.8%

JSON

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.

CNA Affected

[
  {
    "product": "ClamAV",
    "vendor": "Cisco",
    "versions": [
      {
        "status": "affected",
        "version": "0.103.0"
      },
      {
        "status": "affected",
        "version": "0.103.1"
      }
    ]
  }
]