Description
A vulnerability in the Network Service Group (NSG) feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass a configured access control list (ACL) and allow traffic that should be denied to flow through an affected device. This vulnerability is due to a logic error that occurs when NSG ACLs are populated on an affected device. An attacker could exploit this vulnerability by establishing a connection to the affected device. A successful exploit could allow the attacker to bypass configured ACL rules.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Cisco Cisco Adaptive Security Appliance (ASA) Software
9.16.1affected9.16.1.28affected9.16.2affected9.16.2.3affected9.16.2.7affected9.16.2.11affected9.16.2.13affected9.16.2.14affected9.16.3affected9.16.3.3affected9.16.3.14affected9.16.3.15affected9.16.3.19affected9.16.3.23affected9.16.4affected9.16.4.9affected9.16.4.14affected9.16.4.18affected9.16.4.19affected9.16.4.27affected9.16.4.38affected9.16.4.39affected9.16.4.42affected9.16.4.48affected9.16.4.55affected9.16.4.57affected9.16.4.61affected9.17.1affected9.17.1.7affected9.17.1.9affected9.17.1.10affected9.17.1.11affected9.17.1.13affected9.17.1.15affected9.17.1.20affected9.17.1.30affected9.17.1.33affected9.17.1.39affected9.18.1affected9.18.1.3affected9.18.2affected9.18.2.5affected9.18.2.7affected9.18.2.8affected9.18.3affected9.18.3.39affected9.18.3.46affected9.18.3.53affected9.18.3.55affected9.18.3.56affected9.18.4affected9.18.4.5affected9.18.4.8affected9.18.4.22affected9.18.4.24affected9.18.4.29affected9.19.1affected9.19.1.5affected9.19.1.9affected9.19.1.12affected9.19.1.18affected9.19.1.22affected9.19.1.24affected9.19.1.27affected9.19.1.28affected9.19.1.31affected9.20.1affected9.20.1.5affected9.20.2affected9.20.2.10affected9.20.2.21affected9.20.2.22affected
Cisco Cisco Firepower Threat Defense Software
7.0.0affected7.0.0.1affected7.0.1affected7.0.1.1affected7.0.2affected7.0.2.1affected7.0.3affected7.0.4affected7.0.5affected7.0.6affected7.0.6.1affected7.0.6.2affected7.1.0affected7.1.0.1affected7.1.0.2affected7.1.0.3affected7.2.0affected7.2.0.1affected7.2.1affected7.2.2affected7.2.3affected7.2.4affected7.2.4.1affected7.2.5affected7.2.5.1affected7.2.6affected7.2.7affected7.2.5.2affected7.2.8affected7.2.8.1affected7.3.0affected7.3.1affected7.3.1.1affected7.3.1.2affected7.4.0affected7.4.1affected7.4.1.1affected7.4.2affected