SIP DDOS risks

Advisory ID CVE Number Date discovered Severity Advisory revision
STORM-2023-007 CVE-2023-26095 01/04/2023 high v1

Vulnerability details

The SNS is vulnerable to a crash when Nating a specially crafted SIP packet

Impacted products

ProductsSeverityDetail
Stormshield Network Security high SNS is impacted

Revisions

Version Date Description
v1 02/21/2023 Initial release


Stormshield Network Security

CVSS v3.1 Overall Score: 8.1      

Analysis

Impacted version

The SNS is vulnerable to a crash when Nating a specially crafted SIP packet
  • 4.3.15
  • SNS 4.6.0 to 4.6.2

 

Workaround solution

Solution

Deactivate the intrusion prevention (IPS) for the protocol SIP.

The following versions fix this vulnerability:

  • 4.3.16
  • 4.6.3

 



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 Confirmed
CVSS Temporal score: 6.5 CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Confidentiality Requirement Integrity Requirement Availability Requirement
High High High
CVSS Environmental score: 8.1 CVSS Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/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)