Possible DoS on ClamAV antivirus

Advisory ID CVE Number Date discovered Severity Advisory revision
STORM-2023-032 CVE-2023-20197 09/07/2023 medium v2

Vulnerability details

A vulnerability has been identified in the ClamAV antivirus embedded in SNS products. An attacker could exploit it with specific crafted packets in order to cause a denial of service of the antivirus module.


Impacted products

Stormshield Network Security medium SNS is impacted.


Version Date Description
v1 09/29/2023 Initial release
v2 12/15/2023 Update and disclose

Stormshield Network Security

CVSS v3.1 Overall Score: 4.6      


Impacted version

A vulnerability in the AutoIt module of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

  • SNS 4.0.0 to 4.3.21
  • SNS 4.6.0 to 4.6.8
  • SNS 4.7.0

Workaround solution


There is no workaround solution.

The following versions will fix this vulnerability:

  • SNS 4.3.22
  • SNS 4.6.9
  • SNS 4.7.1

Attack Vector Attack Complexity Privileges Required User Interaction Scope Confidentiality Impact Integrity Impact Availability impact
Network Low None None Unchanged None None High
CVSS Base score: 7.5 CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Exploit Code Maturity Remediation Level Report Confidence
Unproven that exploit exists Official fix Unknown
CVSS Temporal score: 6 CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:U)
Confidentiality Requirement Integrity Requirement Availability Requirement
Low Low Low
CVSS Environmental score: 4.6 CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:U/CR:L/IR:L/AR:L/MAV:X/MAC:X/MPR:X/MUI:X/MS:X/MC:X/MI:X/MA:X)