CVE-2022-20950CWE-754CWE-770denial-of-service

CVE-2022-20950

Medium · published November 16, 2022

CVSS v3.1
5.8
EPSS
1%
Percentile
58.6
In the wild
Unconfirmed
What it is

A vulnerability in the interaction of SIP and Snort 3 for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 3 detection engine to restart.

This vulnerability is due to a lack of error-checking when SIP bidirectional flows are being inspected by Snort 3. An attacker could exploit this vulnerability by sending a stream of crafted SIP traffic through an interface on the targeted device. A successful exploit could allow the attacker to trigger a restart of the Snort 3 process, resulting in a denial of service (DoS) condition.

The record
Technical detail
CVSS v3.1
5.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00875 · 58.6th percentile
Weaknesses
CWE-754 · Improper Check for Unusual or Exceptional Conditions; CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2022-11-16T02:15Z
Affected products (2)
ProductVersionsFixed in
cisco/secure_firewall_threat_defenseall versions—
cisco/secure_firewall_threat_defenseall versions—
References (2)
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftdsnort3sip-dos-A4cHeArC · [email protected]https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftdsnort3sip-dos-A4cHeArC · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 10 NOV 17:32Z
    A vulnerability in the interaction of SIP and Snort 3 for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to…
    cvelistv5