CVE-2022-20803 ClamAV Double-free Vulnerability in the OLE2 File Parser

2023-02-1700:00:00

CWE-415

cisco

www.cve.org

8.6 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

8.5 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

55.4%

JSON

A vulnerability in the OLE2 file parser of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device.The vulnerability is due to incorrect use of the realloc function that may result in a double-free. An attacker could exploit this vulnerability by submitting a crafted OLE2 file to be scanned by ClamAV on the affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash, resulting in a denial of service condition.

CNA Affected

[
  {
    "vendor": "Cisco",
    "product": "ClamAV",
    "versions": [
      {
        "version": "0.104.0",
        "status": "affected"
      }
    ]
  }
]