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Cisco Adaptive Security Appliance and Firepower Threat Defense Software VPN Packet Validation Vulnerability

cisco-sa-asa-ssl-vpn-Y88QOm77 · Medium · Published · 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. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ssl-vpn-Y88QOm77

Cisco advisory · CSAF JSON

Workarounds

There are no workarounds that address this vulnerability.

CVEsCVE-2023-20275
Cisco Bug IDsCSCwd98316
CVSS ScoreBase 4.1
Base 4.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N/E:X/RL:X/RC:X
Product Names From Source
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.1, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.1.5, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.1.7, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.8, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.14, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.15, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.17, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.20, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.24, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.26, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.28, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.8.2.33, Cisco Secure Firewall Adaptive 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(FTD) Software 6.2.3, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.1, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.2, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.3, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.4, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.5, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.6, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.7, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.8, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.10, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.11, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.9, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.12, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.13, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.14, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.15, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.16, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.17, Cisco Secure Firewall Threat Defense (FTD) Software 6.2.3.18, Cisco Secure Firewall Threat Defense (FTD) Software 6.6.0, Cisco Secure Firewall Threat Defense (FTD) Software 6.6.0.1, Cisco Secure Firewall Threat Defense (FTD) Software 6.6.1, Cisco Secure Firewall Threat Defense (FTD) Software 6.6.3, Cisco Secure Firewall Threat Defense (FTD) Software 6.6.4, Cisco Secure Firewall Threat Defense (FTD) Software 6.6.5, Cisco Secure Firewall Threat Defense (FTD) Software 6.6.5.1, Cisco Secure Firewall Threat Defense (FTD) Software 6.6.5.2, Cisco Secure Firewall Threat Defense (FTD) Software 6.6.7, Cisco Secure Firewall Threat Defense (FTD) Software 6.6.7.1, Cisco Secure Firewall Threat Defense (FTD) Software 6.6.7.2, Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0, Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.1, Cisco Secure Firewall Threat Defense (FTD) Software 6.4.0.3, Cisco Secure Firewall 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Related Products

Product CVE Evidence
Cisco Secure Firewall Threat Defense Virtual CVE-2023-20275 Cisco OpenVuln
Cisco Secure Firewall Threat Defense (FTD) Software CVE-2023-20275 Cisco OpenVuln
Cisco Secure Firewall Adaptive Security Appliance (ASA) Software CVE-2023-20275 Cisco OpenVuln
Cisco Secure Firewall 3100 Series CVE-2023-20275 Cisco OpenVuln
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Cisco Firepower 1000 Series CVE-2023-20275 Cisco OpenVuln
Cisco Adaptive Security Virtual Appliance (ASAv) CVE-2023-20275 Cisco OpenVuln
Cisco Adaptive Security Appliance (ASA) Software CVE-2023-20275 Cisco OpenVuln
Cisco ASA 5500-X Series Firewalls CVE-2023-20275 Cisco OpenVuln
Cisco 3000 Series Industrial Security Appliances (ISA) CVE-2023-20275 Cisco OpenVuln