First published: Thu Nov 10 2022(Updated: )
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.
Credit: ykramarz@cisco.com ykramarz@cisco.com
Affected Software | Affected Version | How to fix |
---|---|---|
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 Software | =9.6.2.7 | |
Cisco Adaptive Security Appliance Software | =9.6.2.11 | |
Cisco Adaptive Security Appliance Software | =9.6.2.13 | |
Cisco Adaptive Security Appliance Software | =9.6.2.22 | |
Cisco Adaptive Security Appliance Software | =9.6.2.23 | |
Cisco Adaptive Security Appliance Software | =9.6.3 | |
Cisco Adaptive Security Appliance Software | =9.6.3.1 | |
Cisco Adaptive Security Appliance Software | =9.6.3.3 | |
Cisco Adaptive Security Appliance Software | =9.6.3.8 | |
Cisco Adaptive Security Appliance Software | =9.6.3.9 | |
Cisco Adaptive Security Appliance Software | =9.6.3.11 | |
Cisco Adaptive Security Appliance Software | =9.6.3.12 | |
Cisco Adaptive Security Appliance Software | =9.6.3.14 | |
Cisco Adaptive Security Appliance Software | =9.6.3.17 | |
Cisco Adaptive Security Appliance Software | =9.6.3.20 | |
Cisco Adaptive Security Appliance Software | =9.6.4 | |
Cisco Adaptive Security Appliance Software | =9.6.4.3 | |
Cisco Adaptive Security Appliance Software | =9.6.4.5 | |
Cisco Adaptive Security Appliance Software | =9.6.4.6 | |
Cisco Adaptive Security Appliance Software | =9.6.4.8 | |
Cisco Adaptive Security Appliance Software | =9.6.4.10 | |
Cisco Adaptive Security Appliance Software | =9.6.4.12 | |
Cisco Adaptive Security Appliance Software | =9.6.4.14 | |
Cisco Adaptive Security Appliance Software | =9.6.4.17 | |
Cisco Adaptive Security Appliance Software | =9.6.4.18 | |
Cisco Adaptive Security Appliance Software | =9.6.4.20 | |
Cisco Adaptive Security Appliance Software | =9.6.4.22 | |
Cisco Adaptive Security Appliance Software | =9.6.4.23 | |
Cisco Adaptive Security Appliance Software | =9.6.4.24 | |
Cisco Adaptive Security Appliance Software | =9.6.4.25 | |
Cisco Adaptive Security Appliance Software | =9.6.4.29 | |
Cisco Adaptive Security Appliance Software | =9.6.4.30 | |
Cisco Adaptive Security Appliance Software | =9.6.4.34 | |
Cisco Adaptive Security Appliance Software | =9.6.4.36 | |
Cisco Adaptive Security Appliance Software | =9.6.4.40 | |
Cisco Adaptive Security Appliance Software | =9.6.4.41 | |
Cisco Adaptive Security Appliance Software | =9.6.4.42 | |
Cisco Adaptive Security Appliance Software | =9.6.4.45 | |
Cisco Adaptive Security Appliance Software | =9.7.1 | |
Cisco Adaptive Security Appliance Software | =9.7.1.2 | |
Cisco Adaptive Security Appliance Software | =9.7.1.4 | |
Cisco Adaptive Security Appliance Software | =9.7.1.8 | |
Cisco Adaptive Security Appliance Software | =9.7.1.15 | |
Cisco Adaptive Security Appliance Software | =9.7.1.16 | |
Cisco Adaptive Security Appliance Software | =9.7.1.21 | |
Cisco Adaptive Security Appliance Software | =9.7.1.24 | |
Cisco Adaptive Security Appliance Software | =9.8.1 | |
Cisco Adaptive Security Appliance Software | =9.8.1.5 | |
Cisco Adaptive Security Appliance Software | =9.8.1.7 | |
Cisco Adaptive Security Appliance Software | =9.8.2 | |
Cisco Adaptive Security Appliance Software | =9.8.2.8 | |
Cisco Adaptive Security Appliance Software | =9.8.2.14 | |
Cisco Adaptive Security Appliance Software | =9.8.2.15 | |
Cisco Adaptive Security Appliance Software | =9.8.2.17 | |
Cisco Adaptive Security Appliance Software | =9.8.2.20 | |
Cisco Adaptive Security Appliance Software | =9.8.2.24 | |
Cisco Adaptive Security Appliance Software | =9.8.2.26 | |
Cisco Adaptive Security Appliance Software | =9.8.2.28 | |
Cisco Adaptive Security Appliance Software | =9.8.2.33 | |
Cisco Adaptive Security Appliance Software | =9.8.2.35 | |
Cisco Adaptive Security Appliance Software | =9.8.2.38 | |
Cisco Adaptive Security Appliance Software | =9.8.3 | |
Cisco Adaptive Security Appliance Software | =9.8.3.8 | |
Cisco Adaptive Security Appliance Software | =9.8.3.11 | |
Cisco Adaptive Security Appliance Software | =9.8.3.14 | |
Cisco Adaptive Security Appliance Software | =9.8.3.16 | |
Cisco Adaptive Security Appliance Software | =9.8.3.18 | |
Cisco Adaptive Security Appliance Software | =9.8.3.21 | |
Cisco Adaptive Security Appliance Software | =9.8.3.26 | |
Cisco Adaptive Security Appliance Software | =9.8.3.29 | |
Cisco Adaptive Security Appliance Software | =9.8.4 | |
Cisco Adaptive Security Appliance Software | =9.8.4.3 | |
Cisco Adaptive Security Appliance Software | =9.8.4.7 | |
Cisco Adaptive Security Appliance Software | =9.8.4.8 | |
Cisco Adaptive Security Appliance Software | =9.8.4.10 | |
Cisco Adaptive Security Appliance Software | =9.8.4.12 | |
Cisco Adaptive Security Appliance Software | =9.8.4.15 | |
Cisco Adaptive Security Appliance Software | =9.8.4.17 | |
Cisco Adaptive Security Appliance Software | =9.8.4.20 | |
Cisco Adaptive Security Appliance Software | =9.8.4.22 | |
Cisco Adaptive Security Appliance Software | =9.8.4.25 | |
Cisco Adaptive Security Appliance Software | =9.8.4.26 | |
Cisco Adaptive Security Appliance Software | =9.8.4.29 | |
Cisco Adaptive Security Appliance Software | =9.8.4.32 | |
Cisco Adaptive Security Appliance Software | =9.8.4.33 | |
Cisco Adaptive Security Appliance Software | =9.8.4.34 | |
Cisco Adaptive Security Appliance Software | =9.8.4.35 | |
Cisco Adaptive Security Appliance Software | =9.8.4.39 | |
Cisco Adaptive Security Appliance Software | =9.8.4.40 | |
Cisco Adaptive Security Appliance Software | =9.8.4.41 | |
Cisco Adaptive Security Appliance Software | =9.8.4.43 | |
Cisco Adaptive Security Appliance Software | =9.8.4.44 | |
Cisco Adaptive Security Appliance Software | =9.8.4.45 | |
Cisco Adaptive Security Appliance Software | =9.9.1 | |
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 | =9.10.1 | |
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 | =9.10.1.44 | |
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 | =9.12.3.7 | |
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 | =9.12.4.4 | |
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 | =9.12.4.26 | |
Cisco Adaptive Security Appliance Software | =9.12.4.29 | |
Cisco Adaptive Security Appliance Software | =9.12.4.30 | |
Cisco Adaptive Security Appliance Software | =9.12.4.35 | |
Cisco Adaptive Security Appliance Software | =9.12.4.37 | |
Cisco Adaptive Security Appliance Software | =9.12.4.38 | |
Cisco Adaptive Security Appliance Software | =9.12.4.39 | |
Cisco Adaptive Security Appliance Software | =9.13.1 | |
Cisco Adaptive Security Appliance Software | =9.13.1.2 | |
Cisco Adaptive Security Appliance Software | =9.13.1.7 | |
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 | =9.14.1 | |
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 | =9.14.1.30 | |
Cisco Adaptive Security Appliance Software | =9.14.2 | |
Cisco Adaptive Security Appliance Software | =9.14.2.4 | |
Cisco Adaptive Security Appliance Software | =9.14.2.8 | |
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 Adaptive Security Appliance Software | =9.14.3.1 | |
Cisco Adaptive Security Appliance Software | =9.14.3.9 | |
Cisco Adaptive Security Appliance Software | =9.14.3.11 | |
Cisco Adaptive Security Appliance Software | =9.14.3.13 | |
Cisco Adaptive Security Appliance Software | =9.14.3.15 | |
Cisco Adaptive Security Appliance Software | =9.14.3.18 | |
Cisco Adaptive Security Appliance Software | =9.14.4 | |
Cisco Adaptive Security Appliance Software | =9.14.4.6 | |
Cisco Adaptive Security Appliance Software | =9.15.1 | |
Cisco Adaptive Security Appliance Software | =9.15.1.1 | |
Cisco Adaptive Security Appliance Software | =9.15.1.7 | |
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 | =9.15.1.17 | |
Cisco Adaptive Security Appliance Software | =9.15.1.21 | |
Cisco Adaptive Security Appliance Software | =9.16.1 | |
Cisco Adaptive Security Appliance Software | =9.16.1.28 | |
Cisco Adaptive Security Appliance Software | =9.16.2 | |
Cisco Adaptive Security Appliance Software | =9.16.2.3 | |
Cisco Adaptive Security Appliance Software | =9.16.2.7 | |
Cisco Adaptive Security Appliance Software | =9.16.2.11 | |
Cisco Adaptive Security Appliance Software | =9.16.2.13 | |
Cisco Adaptive Security Appliance Software | =9.16.2.14 | |
Cisco Adaptive Security Appliance Software | =9.17.1 | |
Cisco Adaptive Security Appliance Software | =9.17.1.7 | |
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 | =6.2.3.1 | |
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 | =6.4.0 | |
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 Firepower Threat Defense | =6.4.0.13 | |
Cisco Firepower Threat Defense | =6.4.0.14 | |
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 | =6.6.5 | |
Cisco Firepower Threat Defense | =6.6.5.1 | |
Cisco Firepower Threat Defense | =6.6.5.2 | |
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 | =7.0.0 | |
Cisco Firepower Threat Defense | =7.0.0.1 | |
Cisco Firepower Threat Defense | =7.0.1 | |
Cisco Firepower Threat Defense | =7.0.1.1 | |
Cisco Firepower Threat Defense | =7.1.0 | |
Cisco Firepower Threat Defense | =7.1.0.1 | |
Cisco Firepower Threat Defense | =7.1.0.2 | |
Cisco Adaptive Security Appliance Software | =9.6.1 | |
Cisco Adaptive Security Appliance Software | =9.6.1.3 | |
Cisco Adaptive Security Appliance Software | =9.6.1.5 | |
Cisco Adaptive Security Appliance Software | =9.6.1.10 | |
Cisco Adaptive Security Appliance Software | =9.6.2 | |
Cisco Adaptive Security Appliance Software | =9.6.2.1 | |
Cisco Adaptive Security Appliance Software | =9.6.2.2 | |
Cisco Adaptive Security Appliance Software | =9.6.2.3 |
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CVE-2022-20928 has a severity rating of high, as it allows unauthenticated remote access to the system as a different user.
To fix CVE-2022-20928, update your Cisco ASA or FTD software to a fixed version as specified in Cisco's security advisory.
CVE-2022-20928 affects multiple versions of Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software including versions from 9.6.1 to 9.14.
Yes, CVE-2022-20928 can be exploited remotely by an unauthenticated attacker.
The impact of CVE-2022-20928 includes the potential for unauthorized access and the ability for an attacker to impersonate another user in a VPN connection.