CVE Vulnerabilities

CVE-2021-34787

Improper Handling of Exceptional Conditions

Published: Oct 27, 2021 | Modified: Nov 07, 2023
CVSS 3.x
5.3
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N
RedHat/V2
RedHat/V3
Ubuntu

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.

Weakness

The product does not handle or incorrectly handles an exceptional condition.

Affected Software

Name Vendor Start Version End Version
Adaptive_security_appliance Cisco * 9.8.4.40 (excluding)
Firepower_threat_defense Cisco * 6.4.0.13 (excluding)
Firepower_threat_defense Cisco 6.5.0 (including) 6.6.5 (excluding)
Firepower_threat_defense Cisco 6.7.0 (including) 6.7.0.3 (excluding)
Firepower_threat_defense Cisco 7.0.0 (including) 7.0.1 (excluding)
Adaptive_security_appliance_software Cisco 9.9.0 (including) 9.12.4.25 (excluding)
Adaptive_security_appliance_software Cisco 9.13.0 (including) 9.14.3.1 (excluding)
Adaptive_security_appliance_software Cisco 9.15.0 (including) 9.15.1.17 (excluding)
Adaptive_security_appliance_software Cisco 9.16.0 (including) 9.16.1.28 (excluding)

References