CVE-2022-20950

2022-11-1521:15:36

CWE-770

CWE-754

[email protected]

web.nvd.nist.gov

cve

2022

20950

vulnerability

sip

snort 3

cisco

ftd software

remote attacker

dos

nvd

5.8 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

0.001 Low

EPSS

Percentile

48.8%

JSON

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

NVD

Node

ciscofirepower_threat_defenseMatch7.2.0

ciscofirepower_threat_defenseMatch7.2.0.1

CPENameOperatorVersion
cisco:firepower_threat_defensecisco firepower threat defenseeq7.2.0
cisco:firepower_threat_defensecisco firepower threat defenseeq7.2.0.1

CPE	Name	Operator	Version
cisco:firepower_threat_defense	cisco firepower threat defense	eq	7.2.0
cisco:firepower_threat_defense	cisco firepower threat defense	eq	7.2.0.1

CNA Affected

[
  {
    "vendor": "Cisco",
    "product": "Cisco Firepower Threat Defense Software",
    "versions": [
      {
        "version": "7.2.0",
        "status": "affected"
      },
      {
        "version": "7.2.0.1",
        "status": "affected"
      }
    ]
  }
]