Vulnerabilities > CVE-2022-20746 - NULL Pointer Dereference vulnerability in Cisco Firepower Threat Defense

CVSS 7.5 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

network

low complexity

cisco

CWE-476

NVD

Published: 2022-05-03

Updated: 2023-11-07

Summary

A vulnerability in the TCP proxy functionality of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition. This vulnerability is due to improper handling of TCP flows. An attacker could exploit this vulnerability by sending a crafted stream of TCP traffic through an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

Vulnerable Configurations

Part	Description	Count
Application	Cisco Cisco Firepower Threat Defense 7.1.0 Cisco Firepower Threat Defense 6.5.0 Cisco Firepower Threat Defense 6.5.0.1 Cisco Firepower Threat Defense 6.5.0.2 Cisco Firepower Threat Defense 6.5.0.3 Cisco Firepower Threat Defense 6.5.0.4 Cisco Firepower Threat Defense 6.5.0.5 Cisco Firepower Threat Defense 6.6.0 Cisco Firepower Threat Defense 6.6.0.1 Cisco Firepower Threat Defense 6.6.1 Cisco Firepower Threat Defense 6.6.3 Cisco Firepower Threat Defense 6.6.4 Cisco Firepower Threat Defense 6.6.5 Cisco Firepower Threat Defense 6.6.5.1 Cisco Firepower Threat Defense - Cisco Firepower Threat Defense 5.3.0 Cisco Firepower Threat Defense 5.4.0 Cisco Firepower Threat Defense 6.0 Cisco Firepower Threat Defense 6.0.0 Cisco Firepower Threat Defense 6.0.0.1 Cisco Firepower Threat Defense 6.0.1 Cisco Firepower Threat Defense 6.0.1.1 Cisco Firepower Threat Defense 6.0.1.2 Cisco Firepower Threat Defense 6.0.1.3 Cisco Firepower Threat Defense 6.0.1.4 Cisco Firepower Threat Defense 6.1.0 Cisco Firepower Threat Defense 6.1.0.1 Cisco Firepower Threat Defense 6.1.0.2 Cisco Firepower Threat Defense 6.1.0.3 Cisco Firepower Threat Defense 6.1.0.4 Cisco Firepower Threat Defense 6.1.0.5 Cisco Firepower Threat Defense 6.1.0.6 Cisco Firepower Threat Defense 6.1.0.7 Cisco Firepower Threat Defense 6.2.0 Cisco Firepower Threat Defense 6.2.0.1 Cisco Firepower Threat Defense 6.2.0.2 Cisco Firepower Threat Defense 6.2.0.3 Cisco Firepower Threat Defense 6.2.0.4 Cisco Firepower Threat Defense 6.2.0.5 Cisco Firepower Threat Defense 6.2.0.6 Cisco Firepower Threat Defense 6.2.1 Cisco Firepower Threat Defense 6.2.2 Cisco Firepower Threat Defense 6.2.2.1 Cisco Firepower Threat Defense 6.2.2.2 Cisco Firepower Threat Defense 6.2.2.3 Cisco Firepower Threat Defense 6.2.2.4 Cisco Firepower Threat Defense 6.2.2.5 Cisco Firepower Threat Defense 6.2.3 Cisco Firepower Threat Defense 6.2.3.0 Cisco Firepower Threat Defense 6.2.3.1 Cisco Firepower Threat Defense 6.2.3.2 Cisco Firepower Threat Defense 6.2.3.3 Cisco Firepower Threat Defense 6.2.3.4 Cisco Firepower Threat Defense 6.2.3.5 Cisco Firepower Threat Defense 6.2.3.6 Cisco Firepower Threat Defense 6.2.3.7 Cisco Firepower Threat Defense 6.2.3.8 Cisco Firepower Threat Defense 6.2.3.9 Cisco Firepower Threat Defense 6.2.3.10 Cisco Firepower Threat Defense 6.2.3.11 Cisco Firepower Threat Defense 6.2.3.12 Cisco Firepower Threat Defense 6.2.3.13 Cisco Firepower Threat Defense 6.2.3.14 Cisco Firepower Threat Defense 6.2.3.15 Cisco Firepower Threat Defense 6.2.3.16 Cisco Firepower Threat Defense 6.2.3.17 Cisco Firepower Threat Defense 6.2.3.18 Cisco Firepower Threat Defense 6.3.0 Cisco Firepower Threat Defense 6.3.0.1 Cisco Firepower Threat Defense 6.3.0.2 Cisco Firepower Threat Defense 6.3.0.3 Cisco Firepower Threat Defense 6.3.0.4 Cisco Firepower Threat Defense 6.3.0.5 Cisco Firepower Threat Defense 6.3.0.6 Cisco Firepower Threat Defense 6.4.0 Cisco Firepower Threat Defense 6.4.0.1 Cisco Firepower Threat Defense 6.4.0.2 Cisco Firepower Threat Defense 6.4.0.3 Cisco Firepower Threat Defense 6.4.0.4 Cisco Firepower Threat Defense 6.4.0.5 Cisco Firepower Threat Defense 6.4.0.6 Cisco Firepower Threat Defense 6.4.0.7 Cisco Firepower Threat Defense 6.4.0.8 Cisco Firepower Threat Defense 6.4.0.9 Cisco Firepower Threat Defense 6.4.0.10 Cisco Firepower Threat Defense 6.4.0.11 Cisco Firepower Threat Defense 6.4.0.12 Cisco Firepower Threat Defense 6.4.0.13 Cisco Firepower Threat Defense 6.4.0.14 Cisco Firepower Threat Defense 7.0.0 Cisco Firepower Threat Defense 7.0.0.1 Cisco Firepower Threat Defense 7.0.1 Cisco Firepower Threat Defense 7.0.1.1	93

Common Weakness Enumeration (CWE)

CWE-476 - NULL Pointer Dereference

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-tcp-dos-kM9SHhOu