description: A vulnerability in the authentication and authorization flows for VPN connections in Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to establish a connection as a different user.
This vulnerability is due to a flaw in the authorization verifications during the VPN authentication flow. An attacker could exploit this vulnerability by sending a crafted packet during a VPN authentication. The attacker must have valid credentials to establish a VPN connection. A successful exploit could allow the attacker to establish a VPN connection with access privileges from a different user.
problem types: Incorrect Authorization
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: 9.12.1, 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: 9.14.1, 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: 9.15.1, 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: 9.17.1, status: affected
version: 9.17.1.7, 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: 6.4.0, 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: 6.7.0, 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: 7.1.0, status: affected
version: 7.1.0.1, status: affected
version: 7.1.0.2, status: affected
}
{
vendor: Cisco
product: Cisco FirePOWER Services Software for ASA
versions:
version: N/A, status: affected
}
metrics:
format: cvssV3_1
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
baseScore: 5.8
baseSeverity: MEDIUM
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
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.