CVE-2022-20792

2022-08-1008:25:09

CWE-125

cisco

www.cve.org

clam antivirus

local attacker

code execution

database load

vulnerability

heap buffer overflow

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.4

Confidence

High

EPSS

0.001

Percentile

31.6%

JSON

A vulnerability in the regex module used by the signature database load module of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an authenticated, local attacker to crash ClamAV at database load time, and possibly gain code execution. The vulnerability is due to improper bounds checking that may result in a multi-byte heap buffer overwflow write. An attacker could exploit this vulnerability by placing a crafted CDB ClamAV signature database file in the ClamAV database directory. An exploit could allow the attacker to run code as the clamav user.

CNA Affected

[
  {
    "vendor": "Cisco",
    "product": "Clam AntiVirus (ClamAV)",
    "versions": [
      {
        "version": "unspecified",
        "lessThanOrEqual": "0.104.2",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "0.104.0",
        "status": "affected",
        "lessThan": "unspecified",
        "versionType": "custom"
      },
      {
        "version": "unspecified",
        "lessThanOrEqual": "0.103.5",
        "status": "affected",
        "versionType": "custom"
      }
    ]
  }
]