CVEvulnerability

CVE-2022-20950

5.3 MEDIUM Published 2022-11-15 Modified 2026-08-11 Official page ↗
Status
Modified
Published
2022-11-15
Last modified
2026-08-11
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.8 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
CWE-754, CWE-770

Description

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.

Affected configurations

• cisco secure firewall threat defense 7.2.0 • cisco secure firewall threat defense 7.2.0.1

Related

Weakness · CWE (2)

  • CWE-754 Improper Check for Unusual or Exceptional Conditions weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling weakness

References