Vulnerabilities > CVE-2021-34787 - Improper Handling of Exceptional Conditions vulnerability in Cisco products

CVSS 5.3 - MEDIUM

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

LOW

Availability impact

NONE

network

low complexity

cisco

CWE-755

NVD

Published: 2021-10-27

Updated: 2023-11-07

Summary

A vulnerability in the identity-based firewall (IDFW) rule processing feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass security protections. This vulnerability is due to improper handling of network requests by affected devices configured to use object group search. An attacker could exploit this vulnerability by sending a specially crafted network request to an affected device. A successful exploit could allow the attacker to bypass access control list (ACL) rules on the device, bypass security protections, and send network traffic to unauthorized hosts.

Vulnerable Configurations

Part	Description	Count
Application	Cisco Cisco Firepower Threat Defense 7.0.0 Cisco Firepower Threat Defense 7.0.0.1 Cisco Firepower Threat Defense 6.7.0 Cisco Firepower Threat Defense 6.7.0.1 Cisco Firepower Threat Defense 6.7.0.2 Cisco Firepower Threat Defense 6.7.0.3 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 - 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 Adaptive Security Appliance 9.1.7.4 Cisco Adaptive Security Appliance 9.2 Cisco Adaptive Security Appliance 9.2.4.8 Cisco Adaptive Security Appliance 9.3 Cisco Adaptive Security Appliance 9.3.3.9 Cisco Adaptive Security Appliance 9.4 Cisco Adaptive Security Appliance 9.4.2.11 Cisco Adaptive Security Appliance 9.4.4.37 Cisco Adaptive Security Appliance 9.5 Cisco Adaptive Security Appliance 9.5.2.5 Cisco Adaptive Security Appliance 9.6 Cisco Adaptive Security Appliance 9.6.0 Cisco Adaptive Security Appliance 9.6.1 Cisco Adaptive Security Appliance 9.6.1.3 Cisco Adaptive Security Appliance 9.6.1.5 Cisco Adaptive Security Appliance 9.6.1.10 Cisco Adaptive Security Appliance 9.6.2 Cisco Adaptive Security Appliance 9.6.2.1 Cisco Adaptive Security Appliance 9.6.2.2 Cisco Adaptive Security Appliance 9.6.2.3 Cisco Adaptive Security Appliance 9.6.2.7 Cisco Adaptive Security Appliance 9.6.2.11 Cisco Adaptive Security Appliance 9.6.2.13 Cisco Adaptive Security Appliance 9.6.2.22 Cisco Adaptive Security Appliance 9.6.2.23 Cisco Adaptive Security Appliance 9.6.3 Cisco Adaptive Security Appliance 9.6.3.1 Cisco Adaptive Security Appliance 9.6.3.3 Cisco Adaptive Security Appliance 9.6.3.8 Cisco Adaptive Security Appliance 9.6.3.9 Cisco Adaptive Security Appliance 9.6.3.11 Cisco Adaptive Security Appliance 9.6.3.12 Cisco Adaptive Security Appliance 9.6.3.14 Cisco Adaptive Security Appliance 9.6.3.17 Cisco Adaptive Security Appliance 9.6.3.20 Cisco Adaptive Security Appliance 9.6.4 Cisco Adaptive Security Appliance 9.6.4.3 Cisco Adaptive Security Appliance 9.6.4.5 Cisco Adaptive Security Appliance 9.6.4.6 Cisco Adaptive Security Appliance 9.6.4.8 Cisco Adaptive Security Appliance 9.6.4.10 Cisco Adaptive Security Appliance 9.6.4.12 Cisco Adaptive Security Appliance 9.6.4.14 Cisco Adaptive Security Appliance 9.6.4.17 Cisco Adaptive Security Appliance 9.6.4.18 Cisco Adaptive Security Appliance 9.6.4.20 Cisco Adaptive Security Appliance 9.6.4.22 Cisco Adaptive Security Appliance 9.6.4.23 Cisco Adaptive Security Appliance 9.6.4.24 Cisco Adaptive Security Appliance 9.6.4.25 Cisco Adaptive Security Appliance 9.6.4.29 Cisco Adaptive Security Appliance 9.6.4.30 Cisco Adaptive Security Appliance 9.6.4.31 Cisco Adaptive Security Appliance 9.6.4.34 Cisco Adaptive Security Appliance 9.6.4.35 Cisco Adaptive Security Appliance 9.6.4.36 Cisco Adaptive Security Appliance 9.6.4.40 Cisco Adaptive Security Appliance 9.6.4.41 Cisco Adaptive Security Appliance 9.6.4.42 Cisco Adaptive Security Appliance 9.6.4.43 Cisco Adaptive Security Appliance 9.6.4.45 Cisco Adaptive Security Appliance 9.7 Cisco Adaptive Security Appliance 9.7.1 Cisco Adaptive Security Appliance 9.7.1.2 Cisco Adaptive Security Appliance 9.7.1.4 Cisco Adaptive Security Appliance 9.7.1.8 Cisco Adaptive Security Appliance 9.7.1.15 Cisco Adaptive Security Appliance 9.7.1.16 Cisco Adaptive Security Appliance 9.7.1.21 Cisco Adaptive Security Appliance 9.7.1.24 Cisco Adaptive Security Appliance 9.8 Cisco Adaptive Security Appliance 9.8.0 Cisco Adaptive Security Appliance 9.8.1 Cisco Adaptive Security Appliance 9.8.1.5 Cisco Adaptive Security Appliance 9.8.1.7 Cisco Adaptive Security Appliance 9.8.2 Cisco Adaptive Security Appliance 9.8.2.8 Cisco Adaptive Security Appliance 9.8.2.14 Cisco Adaptive Security Appliance 9.8.2.15 Cisco Adaptive Security Appliance 9.8.2.17 Cisco Adaptive Security Appliance 9.8.2.20 Cisco Adaptive Security Appliance 9.8.2.24 Cisco Adaptive Security Appliance 9.8.2.26 Cisco Adaptive Security Appliance 9.8.2.28 Cisco Adaptive Security Appliance 9.8.2.33 Cisco Adaptive Security Appliance 9.8.2.35 Cisco Adaptive Security Appliance 9.8.2.38 Cisco Adaptive Security Appliance 9.8.2.45 Cisco Adaptive Security Appliance 9.8.3 Cisco Adaptive Security Appliance 9.8.3.8 Cisco Adaptive Security Appliance 9.8.3.11 Cisco Adaptive Security Appliance 9.8.3.14 Cisco Adaptive Security Appliance 9.8.3.16 Cisco Adaptive Security Appliance 9.8.3.18 Cisco Adaptive Security Appliance 9.8.3.21 Cisco Adaptive Security Appliance 9.8.3.26 Cisco Adaptive Security Appliance 9.8.3.29 Cisco Adaptive Security Appliance 9.8.4 Cisco Adaptive Security Appliance 9.8.4.3 Cisco Adaptive Security Appliance 9.8.4.7 Cisco Adaptive Security Appliance 9.8.4.8 Cisco Adaptive Security Appliance 9.8.4.9 Cisco Adaptive Security Appliance 9.8.4.10 Cisco Adaptive Security Appliance 9.8.4.12 Cisco Adaptive Security Appliance 9.8.4.15 Cisco Adaptive Security Appliance 9.8.4.17 Cisco Adaptive Security Appliance 9.8.4.20 Cisco Adaptive Security Appliance 9.8.4.22 Cisco Adaptive Security Appliance 9.8.4.24 Cisco Adaptive Security Appliance 9.8.4.25 Cisco Adaptive Security Appliance 9.8.4.26 Cisco Adaptive Security Appliance 9.8.4.29 Cisco Adaptive Security Appliance 9.8.4.32 Cisco Adaptive Security Appliance 9.8.4.33 Cisco Adaptive Security Appliance 9.8.4.34 Cisco Adaptive Security Appliance 9.8.4.35 Cisco Adaptive Security Appliance 9.8.4.39	207
OS	Cisco Cisco Adaptive Security Appliance Software 9.15.1 Cisco Adaptive Security Appliance Software 9.15.1.1 Cisco Adaptive Security Appliance Software 9.15.1.4 Cisco Adaptive Security Appliance Software 9.15.1.7 Cisco Adaptive Security Appliance Software 9.15.1.10 Cisco Adaptive Security Appliance Software 9.15.1.15 Cisco Adaptive Security Appliance Software 9.15.1.16 Cisco Adaptive Security Appliance Software 9.16.1 Cisco Adaptive Security Appliance Software 9.9.0 Cisco Adaptive Security Appliance Software 9.9.0.0 Cisco Adaptive Security Appliance Software 9.9.1 Cisco Adaptive Security Appliance Software 9.9.1\(1\) Cisco Adaptive Security Appliance Software 9.9.1.2 Cisco Adaptive Security Appliance Software 9.9.1.3 Cisco Adaptive Security Appliance Software 9.9.1.4 Cisco Adaptive Security Appliance Software 9.9.1.5 Cisco Adaptive Security Appliance Software 9.9.2 Cisco Adaptive Security Appliance Software 9.9.2.1 Cisco Adaptive Security Appliance Software 9.9.2.9 Cisco Adaptive Security Appliance Software 9.9.2.14 Cisco Adaptive Security Appliance Software 9.9.2.18 Cisco Adaptive Security Appliance Software 9.9.2.25 Cisco Adaptive Security Appliance Software 9.9.2.27 Cisco Adaptive Security Appliance Software 9.9.2.32 Cisco Adaptive Security Appliance Software 9.9.2.36 Cisco Adaptive Security Appliance Software 9.9.2.40 Cisco Adaptive Security Appliance Software 9.9.2.47 Cisco Adaptive Security Appliance Software 9.9.2.50 Cisco Adaptive Security Appliance Software 9.9.2.52 Cisco Adaptive Security Appliance Software 9.9.2.56 Cisco Adaptive Security Appliance Software 9.9.2.59 Cisco Adaptive Security Appliance Software 9.9.2.61 Cisco Adaptive Security Appliance Software 9.9.2.66 Cisco Adaptive Security Appliance Software 9.9.2.67 Cisco Adaptive Security Appliance Software 9.9.2.74 Cisco Adaptive Security Appliance Software 9.9.2.80 Cisco Adaptive Security Appliance Software 9.9.2.83 Cisco Adaptive Security Appliance Software 9.9.2.85 Cisco Adaptive Security Appliance Software 9.9.2.235 Cisco Adaptive Security Appliance Software 9.10 Cisco Adaptive Security Appliance Software 9.10.0 Cisco Adaptive Security Appliance Software 9.10.1 Cisco Adaptive Security Appliance Software 9.10.1.2 Cisco Adaptive Security Appliance Software 9.10.1.7 Cisco Adaptive Security Appliance Software 9.10.1.10 Cisco Adaptive Security Appliance Software 9.10.1.11 Cisco Adaptive Security Appliance Software 9.10.1.17 Cisco Adaptive Security Appliance Software 9.10.1.22 Cisco Adaptive Security Appliance Software 9.10.1.27 Cisco Adaptive Security Appliance Software 9.10.1.30 Cisco Adaptive Security Appliance Software 9.10.1.32 Cisco Adaptive Security Appliance Software 9.10.1.37 Cisco Adaptive Security Appliance Software 9.10.1.40 Cisco Adaptive Security Appliance Software 9.10.1.42 Cisco Adaptive Security Appliance Software 9.10.1.43 Cisco Adaptive Security Appliance Software 9.10.1.44 Cisco Adaptive Security Appliance Software 9.11 Cisco Adaptive Security Appliance Software 9.12 Cisco Adaptive Security Appliance Software 9.12.0 Cisco Adaptive Security Appliance Software 9.12.1 Cisco Adaptive Security Appliance Software 9.12.1.2 Cisco Adaptive Security Appliance Software 9.12.1.3 Cisco Adaptive Security Appliance Software 9.12.2 Cisco Adaptive Security Appliance Software 9.12.2.1 Cisco Adaptive Security Appliance Software 9.12.2.4 Cisco Adaptive Security Appliance Software 9.12.2.5 Cisco Adaptive Security Appliance Software 9.12.2.9 Cisco Adaptive Security Appliance Software 9.12.3 Cisco Adaptive Security Appliance Software 9.12.3.2 Cisco Adaptive Security Appliance Software 9.12.3.6 Cisco Adaptive Security Appliance Software 9.12.3.7 Cisco Adaptive Security Appliance Software 9.12.3.9 Cisco Adaptive Security Appliance Software 9.12.3.12 Cisco Adaptive Security Appliance Software 9.12.4 Cisco Adaptive Security Appliance Software 9.12.4.2 Cisco Adaptive Security Appliance Software 9.12.4.3 Cisco Adaptive Security Appliance Software 9.12.4.4 Cisco Adaptive Security Appliance Software 9.12.4.7 Cisco Adaptive Security Appliance Software 9.12.4.8 Cisco Adaptive Security Appliance Software 9.12.4.10 Cisco Adaptive Security Appliance Software 9.12.4.13 Cisco Adaptive Security Appliance Software 9.12.4.18 Cisco Adaptive Security Appliance Software 9.12.4.24 Cisco Adaptive Security Appliance Software 9.13.1 Cisco Adaptive Security Appliance Software 9.13.1.2 Cisco Adaptive Security Appliance Software 9.13.1.4 Cisco Adaptive Security Appliance Software 9.13.1.5 Cisco Adaptive Security Appliance Software 9.13.1.7 Cisco Adaptive Security Appliance Software 9.13.1.10 Cisco Adaptive Security Appliance Software 9.13.1.12 Cisco Adaptive Security Appliance Software 9.13.1.13 Cisco Adaptive Security Appliance Software 9.13.1.16 Cisco Adaptive Security Appliance Software 9.13.1.19 Cisco Adaptive Security Appliance Software 9.13.1.21 Cisco Adaptive Security Appliance Software 9.14 Cisco Adaptive Security Appliance Software 9.14.1 Cisco Adaptive Security Appliance Software 9.14.1.6 Cisco Adaptive Security Appliance Software 9.14.1.10 Cisco Adaptive Security Appliance Software 9.14.1.15 Cisco Adaptive Security Appliance Software 9.14.1.19 Cisco Adaptive Security Appliance Software 9.14.1.29 Cisco Adaptive Security Appliance Software 9.14.1.30 Cisco Adaptive Security Appliance Software 9.14.2 Cisco Adaptive Security Appliance Software 9.14.2.4 Cisco Adaptive Security Appliance Software 9.14.2.7 Cisco Adaptive Security Appliance Software 9.14.2.8 Cisco Adaptive Security Appliance Software 9.14.2.13 Cisco Adaptive Security Appliance Software 9.14.2.15 Cisco Adaptive Security Appliance Software 9.14.3 Cisco ASA 5512 X Firmware 009.009 Cisco ASA 5512 X Firmware 009.012 Cisco ASA 5505 Firmware 009.009 Cisco ASA 5505 Firmware 009.012 Cisco ASA 5515 X Firmware 009.009 Cisco ASA 5515 X Firmware 009.012 Cisco ASA 5525 X Firmware 009.009 Cisco ASA 5525 X Firmware 009.012 Cisco ASA 5545 X Firmware 009.009 Cisco ASA 5545 X Firmware 009.012 Cisco ASA 5555 X Firmware 009.009 Cisco ASA 5555 X Firmware 009.012 Cisco ASA 5580 Firmware 009.009 Cisco ASA 5580 Firmware 009.012 Cisco ASA 5585 X Firmware 009.009 Cisco ASA 5585 X Firmware 009.012	125
Hardware	Cisco Cisco ASA 5512 X - Cisco ASA 5505 - Cisco ASA 5515 X - Cisco ASA 5525 X - Cisco ASA 5545 X - Cisco ASA 5555 X - Cisco ASA 5580 - Cisco ASA 5585 X -	8

Common Weakness Enumeration (CWE)

CWE-755 - Improper Handling of Exceptional Conditions

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-rule-bypass-ejjOgQEY