SNS DoS when using SSL Proxy (CVE-2021-37613)

Advisory ID CVE Number Date discovered Severity Advisory revision
STORM-2021-050 CVE-2021-37613 07/29/2021 medium v2

Vulnerability details

If the SSL proxy is enabled and decrypts the trafic, it is possible to crash the SNS by sending a specific traffic.

Impacted products

Stormshield Network Security medium SNS is impacted


Version Date Description
v1 12/29/2021 Reserved publication
v2 02/09/2022 Updated and disclosed


Stormshield Network Security

CVSS v3.1 Overall Score: 6.6      


Impacted version

If the SSL proxy is enabled and is decrypting the traffic, some network transaction can be badly interpreted by the ASQ engine, leading to a reboot of the SNS.

  • SNS 1.0.0 to 1.6.1
  • SNS 2.0.0 to 2.7.8
  • SNS 2.8.0 to 2.16.0
  • SNS 3.0.0 to 3.7.24
  • SNS 3.8.0 to 3.11.12
  • SNS 4.0.0 to 4.2.7

Workaround solution


There is no workaround solution.

The vulnerability is fixed in versions

  • 3.7.25
  • 3.11.13
  • 4.2.8
  • 4.3.3

Attack Vector Attack Complexity Privileges Required User Interaction Scope Confidentiality Impact Integrity Impact Availability impact
Adjacent Network High None None Unchanged None None High
CVSS Base score: 5.3 CVSS Vector: (AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
Exploit Code Maturity Remediation Level Report Confidence
Functional exploit exists Official fix Confirmed
CVSS Temporal score: 4.9 CVSS Vector: (AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:F/RL:O/RC:C)
Confidentiality Requirement Integrity Requirement Availability Requirement
High High High
CVSS Environmental score: 6.6 CVSS Vector: (AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:F/RL:O/RC:C/CR:H/IR:H/AR:H/MAV:X/MAC:X/MPR:X/MUI:X/MS:X/MC:X/MI:X/MA:X)