First published: Tue Dec 12 2023(Updated: )
A vulnerability in the AnyConnect SSL VPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to send packets with another VPN user's source IP address. This vulnerability is due to improper validation of the packet's inner source IP address after decryption. An attacker could exploit this vulnerability by sending crafted packets through the tunnel. A successful exploit could allow the attacker to send a packet impersonating another VPN user's IP address. It is not possible for the attacker to receive return packets.
Credit: ykramarz@cisco.com
Affected Software | Affected Version | How to fix |
---|---|---|
Cisco Adaptive Security Appliance | =9.8.1 | |
Cisco Adaptive Security Appliance | =9.8.1.5 | |
Cisco Adaptive Security Appliance | =9.8.1.7 | |
Cisco Adaptive Security Appliance | =9.8.2 | |
Cisco Adaptive Security Appliance | =9.8.2.8 | |
Cisco Adaptive Security Appliance | =9.8.2.14 | |
Cisco Adaptive Security Appliance | =9.8.2.15 | |
Cisco Adaptive Security Appliance | =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 | =9.8.4.46 | |
Cisco Adaptive Security Appliance Software | =9.8.4.48 | |
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 | =9.12.4.40 | |
Cisco Adaptive Security Appliance Software | =9.12.4.41 | |
Cisco Adaptive Security Appliance Software | =9.12.4.47 | |
Cisco Adaptive Security Appliance Software | =9.12.4.48 | |
Cisco Adaptive Security Appliance Software | =9.12.4.50 | |
Cisco Adaptive Security Appliance Software | =9.12.4.52 | |
Cisco Adaptive Security Appliance Software | =9.12.4.54 | |
Cisco Adaptive Security Appliance Software | =9.12.4.55 | |
Cisco Adaptive Security Appliance Software | =9.12.4.56 | |
Cisco Adaptive Security Appliance Software | =9.12.4.58 | |
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 | =9.14.4.7 | |
Cisco Adaptive Security Appliance Software | =9.14.4.12 | |
Cisco Adaptive Security Appliance Software | =9.14.4.13 | |
Cisco Adaptive Security Appliance Software | =9.14.4.14 | |
Cisco Adaptive Security Appliance Software | =9.14.4.15 | |
Cisco Adaptive Security Appliance Software | =9.14.4.17 | |
Cisco Adaptive Security Appliance Software | =9.14.4.22 | |
Cisco Adaptive Security Appliance Software | =9.14.4.23 | |
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 | =9.16.3 | |
Cisco Adaptive Security Appliance Software | =9.16.3.3 | |
Cisco Adaptive Security Appliance Software | =9.16.3.14 | |
Cisco Adaptive Security Appliance Software | =9.16.3.15 | |
Cisco Adaptive Security Appliance Software | =9.16.3.19 | |
Cisco Adaptive Security Appliance Software | =9.16.3.23 | |
Cisco Adaptive Security Appliance Software | =9.16.4 | |
Cisco Adaptive Security Appliance Software | =9.16.4.9 | |
Cisco Adaptive Security Appliance Software | =9.16.4.14 | |
Cisco Adaptive Security Appliance Software | =9.16.4.18 | |
Cisco Adaptive Security Appliance Software | =9.16.4.19 | |
Cisco Adaptive Security Appliance Software | =9.16.4.27 | |
Cisco Adaptive Security Appliance Software | =9.17.1 | |
Cisco Adaptive Security Appliance Software | =9.17.1.7 | |
Cisco Adaptive Security Appliance Software | =9.17.1.9 | |
Cisco Adaptive Security Appliance Software | =9.17.1.10 | |
Cisco Adaptive Security Appliance Software | =9.17.1.11 | |
Cisco Adaptive Security Appliance Software | =9.17.1.13 | |
Cisco Adaptive Security Appliance Software | =9.17.1.15 | |
Cisco Adaptive Security Appliance Software | =9.17.1.20 | |
Cisco Adaptive Security Appliance Software | =9.17.1.30 | |
Cisco Adaptive Security Appliance Software | =9.18.1 | |
Cisco Adaptive Security Appliance Software | =9.18.1.3 | |
Cisco Adaptive Security Appliance Software | =9.18.2 | |
Cisco Adaptive Security Appliance Software | =9.18.2.5 | |
Cisco Adaptive Security Appliance Software | =9.18.2.7 | |
Cisco Adaptive Security Appliance Software | =9.18.2.8 | |
Cisco Adaptive Security Appliance Software | =9.18.3 | |
Cisco Adaptive Security Appliance Software | =9.18.3.39 | |
Cisco Adaptive Security Appliance Software | =9.18.3.46 | |
Cisco Adaptive Security Appliance Software | =9.19.1 | |
Cisco Adaptive Security Appliance Software | =9.19.1.5 | |
Cisco Adaptive Security Appliance Software | =9.19.1.9 | |
Cisco Adaptive Security Appliance Software | =9.19.1.12 | |
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 | =6.4.0 | |
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 | =6.4.0.15 | |
Cisco Firepower Threat Defense | =6.4.0.16 | |
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 | =6.6.7 | |
Cisco Firepower Threat Defense | =6.6.7.1 | |
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 | =7.0.2 | |
Cisco Firepower Threat Defense | =7.0.2.1 | |
Cisco Firepower Threat Defense | =7.0.3 | |
Cisco Firepower Threat Defense | =7.0.4 | |
Cisco Firepower Threat Defense | =7.0.5 | |
Cisco Firepower Threat Defense | =7.0.6 | |
Cisco Firepower Threat Defense | =7.1.0 | |
Cisco Firepower Threat Defense | =7.1.0.1 | |
Cisco Firepower Threat Defense | =7.1.0.2 | |
Cisco Firepower Threat Defense | =7.1.0.3 | |
Cisco Firepower Threat Defense | =7.2.0 | |
Cisco Firepower Threat Defense | =7.2.0.1 | |
Cisco Firepower Threat Defense | =7.2.1 | |
Cisco Firepower Threat Defense | =7.2.2 | |
Cisco Firepower Threat Defense | =7.2.3 | |
Cisco Firepower Threat Defense | =7.2.4 | |
Cisco Firepower Threat Defense | =7.3.0 | |
Cisco Firepower Threat Defense | =7.3.1 | |
Cisco Firepower Threat Defense | =7.3.1.1 |
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CVE-2023-20275 has a severity rating of critical, as it allows authenticated, remote attackers to exploit the vulnerability.
To fix CVE-2023-20275, upgrade to a fixed version of the AnyConnect SSL VPN feature in the Cisco Adaptive Security Appliance Software.
CVE-2023-20275 affects multiple versions of Cisco Adaptive Security Appliance and Cisco Firepower Threat Defense software.
Yes, CVE-2023-20275 can be exploited remotely by authenticated attackers.
Currently, the recommended action for CVE-2023-20275 is to apply software updates, as no specific workaround is mentioned.