A vulnerability in the Remote Access SSL VPN functionality of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to exhaust device memory resulting in a denial of service (DoS) condition to new Remote Access SSL VPN connections. This does not affect the management interface, though it may become temporarily unresponsive. This vulnerability is due to trusting user input without validation.
An attacker could exploit this vulnerability by sending crafted packets to the Remote Access SSL VPN server. A successful exploit could allow the attacker to cause the device web interface to stop responding, resulting in a DoS condition.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 10
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Cisco Adaptive_Security_Appliance_Software
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
|
9.12.1
|
9.16.4.85
|
|
Cisco Adaptive_Security_Appliance_Software
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
|
9.17.1
|
9.18.4.66
|
|
Cisco Adaptive_Security_Appliance_Software
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
|
9.19.1
|
9.20.4
|
|
Cisco Adaptive_Security_Appliance_Software
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
|
9.22.1.1
|
9.22.2.4
|
|
Cisco Adaptive_Security_Appliance_Software
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
|
9.23.1
|
9.23.1.7
|
|
Cisco Firepower_Threat_Defense_Software
cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*
|
6.4.0
|
7.0.9
|
|
Cisco Firepower_Threat_Defense_Software
cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*
|
7.1.0
|
7.2.11
|
|
Cisco Firepower_Threat_Defense_Software
cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*
|
7.3.0
|
7.4.3
|
|
Cisco Firepower_Threat_Defense_Software
cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*
|
7.6.0
|
7.6.4
|
|
Cisco Firepower_Threat_Defense_Software
cpe:2.3:a:cisco:firepower_threat_defense_software:*:*:*:*:*:*:*:*
|
7.7.0
|
7.7.11
|