description: A vulnerability in the remote access SSL VPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to bypass a configured multiple certificate authentication policy and connect using only a valid username and password. This vulnerability is due to improper error handling during remote access VPN authentication. An attacker could exploit this vulnerability by sending crafted requests during remote access VPN session establishment. A successful exploit could allow the attacker to bypass the configured multiple certificate authentication policy while retaining the privileges and permissions associated with the original connection profile.
problem types: Authentication Bypass Using an Alternate Path or Channel
affected:
{
vendor: Cisco
product: Cisco Adaptive Security Appliance (ASA) Software
versions:
version: 9.8.1, status: affected
version: 9.8.1.5, status: affected
version: 9.8.1.7, status: affected
version: 9.8.2, status: affected
version: 9.8.2.8, status: affected
version: 9.8.2.14, status: affected
version: 9.8.2.15, status: affected
version: 9.8.2.17, status: affected
version: 9.8.2.20, status: affected
version: 9.8.2.24, status: affected
version: 9.8.2.26, status: affected
version: 9.8.2.28, status: affected
version: 9.8.2.33, status: affected
version: 9.8.2.35, status: affected
version: 9.8.2.38, status: affected
version: 9.8.3.8, status: affected
version: 9.8.3.11, status: affected
version: 9.8.3.14, status: affected
version: 9.8.3.16, status: affected
version: 9.8.3.18, status: affected
version: 9.8.3.21, status: affected
version: 9.8.3, status: affected
version: 9.8.3.26, status: affected
version: 9.8.3.29, status: affected
version: 9.8.4, status: affected
version: 9.8.4.3, status: affected
version: 9.8.4.7, status: affected
version: 9.8.4.8, status: affected
version: 9.8.4.10, status: affected
version: 9.8.4.12, status: affected
version: 9.8.4.15, status: affected
version: 9.8.4.17, status: affected
version: 9.8.4.25, status: affected
version: 9.8.4.20, status: affected
version: 9.8.4.22, status: affected
version: 9.8.4.26, status: affected
version: 9.8.4.29, status: affected
version: 9.8.4.32, status: affected
version: 9.8.4.33, status: affected
version: 9.8.4.34, status: affected
version: 9.8.4.35, status: affected
version: 9.8.4.39, status: affected
version: 9.8.4.40, status: affected
version: 9.8.4.41, status: affected
version: 9.8.4.43, status: affected
version: 9.8.4.44, status: affected
version: 9.8.4.45, status: affected
version: 9.8.4.46, status: affected
version: 9.8.4.48, status: affected
version: 9.12.1, status: affected
version: 9.12.1.2, status: affected
version: 9.12.1.3, status: affected
version: 9.12.2, status: affected
version: 9.12.2.4, status: affected
version: 9.12.2.5, status: affected
version: 9.12.2.9, status: affected
version: 9.12.3, status: affected
version: 9.12.3.2, status: affected
version: 9.12.3.7, status: affected
version: 9.12.4, status: affected
version: 9.12.3.12, status: affected
version: 9.12.3.9, status: affected
version: 9.12.2.1, status: affected
version: 9.12.4.2, status: affected
version: 9.12.4.4, status: affected
version: 9.12.4.7, status: affected
version: 9.12.4.10, status: affected
version: 9.12.4.13, status: affected
version: 9.12.4.8, status: affected
version: 9.12.4.18, status: affected
version: 9.12.4.24, status: affected
version: 9.12.4.26, status: affected
version: 9.12.4.29, status: affected
version: 9.12.4.30, status: affected
version: 9.12.4.35, status: affected
version: 9.12.4.37, status: affected
version: 9.12.4.38, status: affected
version: 9.12.4.39, status: affected
version: 9.12.4.40, status: affected
version: 9.12.4.41, status: affected
version: 9.12.4.47, status: affected
version: 9.12.4.48, status: affected
version: 9.12.4.50, status: affected
version: 9.12.4.52, status: affected
version: 9.12.4.54, status: affected
version: 9.12.4.55, status: affected
version: 9.12.4.56, status: affected
version: 9.12.4.58, status: affected
version: 9.14.1, status: affected
version: 9.14.1.10, status: affected
version: 9.14.1.6, status: affected
version: 9.14.1.15, status: affected
version: 9.14.1.19, status: affected
version: 9.14.1.30, status: affected
version: 9.14.2, status: affected
version: 9.14.2.4, status: affected
version: 9.14.2.8, status: affected
version: 9.14.2.13, status: affected
version: 9.14.2.15, status: affected
version: 9.14.3, status: affected
version: 9.14.3.1, status: affected
version: 9.14.3.9, status: affected
version: 9.14.3.11, status: affected
version: 9.14.3.13, status: affected
version: 9.14.3.18, status: affected
version: 9.14.3.15, status: affected
version: 9.14.4, status: affected
version: 9.14.4.6, status: affected
version: 9.14.4.7, status: affected
version: 9.14.4.12, status: affected
version: 9.14.4.13, status: affected
version: 9.14.4.14, status: affected
version: 9.14.4.15, status: affected
version: 9.14.4.17, status: affected
version: 9.14.4.22, status: affected
version: 9.14.4.23, status: affected
version: 9.15.1, status: affected
version: 9.15.1.7, status: affected
version: 9.15.1.10, status: affected
version: 9.15.1.15, status: affected
version: 9.15.1.16, status: affected
version: 9.15.1.17, status: affected
version: 9.15.1.1, status: affected
version: 9.15.1.21, status: affected
version: 9.16.1, status: affected
version: 9.16.1.28, status: affected
version: 9.16.2, status: affected
version: 9.16.2.3, status: affected
version: 9.16.2.7, status: affected
version: 9.16.2.11, status: affected
version: 9.16.2.13, status: affected
version: 9.16.2.14, status: affected
version: 9.16.3, status: affected
version: 9.16.3.3, status: affected
version: 9.16.3.14, status: affected
version: 9.16.3.15, status: affected
version: 9.16.3.19, status: affected
version: 9.16.3.23, status: affected
version: 9.16.4, status: affected
version: 9.16.4.9, status: affected
version: 9.16.4.14, status: affected
version: 9.16.4.18, status: affected
version: 9.16.4.19, status: affected
version: 9.17.1, status: affected
version: 9.17.1.7, status: affected
version: 9.17.1.9, status: affected
version: 9.17.1.10, status: affected
version: 9.17.1.11, status: affected
version: 9.17.1.13, status: affected
version: 9.17.1.15, status: affected
version: 9.17.1.20, status: affected
version: 9.17.1.30, status: affected
version: 9.18.1, status: affected
version: 9.18.1.3, status: affected
version: 9.18.2, status: affected
version: 9.18.2.5, status: affected
version: 9.18.2.7, status: affected
version: 9.18.2.8, status: affected
version: 9.18.3, status: affected
version: 9.18.3.39, status: affected
version: 9.18.3.46, status: affected
version: 9.19.1, status: affected
version: 9.19.1.5, status: affected
version: 9.19.1.9, status: affected
version: 9.19.1.12, status: affected
}
{
vendor: Cisco
product: Cisco Firepower Threat Defense Software
versions:
version: 6.2.3, status: affected
version: 6.2.3.1, status: affected
version: 6.2.3.2, status: affected
version: 6.2.3.3, status: affected
version: 6.2.3.4, status: affected
version: 6.2.3.5, status: affected
version: 6.2.3.6, status: affected
version: 6.2.3.7, status: affected
version: 6.2.3.8, status: affected
version: 6.2.3.10, status: affected
version: 6.2.3.11, status: affected
version: 6.2.3.9, status: affected
version: 6.2.3.12, status: affected
version: 6.2.3.13, status: affected
version: 6.2.3.14, status: affected
version: 6.2.3.15, status: affected
version: 6.2.3.16, status: affected
version: 6.2.3.17, status: affected
version: 6.2.3.18, status: affected
version: 6.6.0, status: affected
version: 6.6.0.1, status: affected
version: 6.6.1, status: affected
version: 6.6.3, status: affected
version: 6.6.4, status: affected
version: 6.6.5, status: affected
version: 6.6.5.1, status: affected
version: 6.6.5.2, status: affected
version: 6.6.7, status: affected
version: 6.6.7.1, status: affected
version: 6.4.0, status: affected
version: 6.4.0.1, status: affected
version: 6.4.0.3, status: affected
version: 6.4.0.2, status: affected
version: 6.4.0.4, status: affected
version: 6.4.0.5, status: affected
version: 6.4.0.6, status: affected
version: 6.4.0.7, status: affected
version: 6.4.0.8, status: affected
version: 6.4.0.9, status: affected
version: 6.4.0.10, status: affected
version: 6.4.0.11, status: affected
version: 6.4.0.12, status: affected
version: 6.4.0.13, status: affected
version: 6.4.0.14, status: affected
version: 6.4.0.15, status: affected
version: 6.4.0.16, status: affected
version: 6.7.0, status: affected
version: 6.7.0.1, status: affected
version: 6.7.0.2, status: affected
version: 6.7.0.3, status: affected
version: 7.0.0, status: affected
version: 7.0.0.1, status: affected
version: 7.0.1, status: affected
version: 7.0.1.1, status: affected
version: 7.0.2, status: affected
version: 7.0.2.1, status: affected
version: 7.0.3, status: affected
version: 7.0.4, status: affected
version: 7.0.5, status: affected
version: 7.1.0, status: affected
version: 7.1.0.1, status: affected
version: 7.1.0.2, status: affected
version: 7.1.0.3, status: affected
version: 7.2.0, status: affected
version: 7.2.0.1, status: affected
version: 7.2.1, status: affected
version: 7.2.2, status: affected
version: 7.2.3, status: affected
version: 7.2.4, status: affected
version: 7.3.0, status: affected
version: 7.3.1, status: affected
version: 7.3.1.1, status: affected
}
metrics:
format: cvssV3_1
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
baseScore: 5
baseSeverity: MEDIUM
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: NONE
scope: CHANGED
confidentialityImpact: NONE
integrityImpact: LOW
availabilityImpact: NONE
]
exploits: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.