CVE-2020-3189
high
Cisco CVSS v3 Base Score
8.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS Score
1.8%
Exploitation probability in 30 days
Top 24% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Vulnerability Report
Generated by CyberWatcher
Description
A vulnerability in the VPN System Logging functionality for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a memory leak that can deplete system memory over time, which can cause unexpected system behaviors or device crashes. The vulnerability is due to the system memory not being properly freed for a VPN System Logging event generated when a VPN session is created or deleted. An attacker could exploit this vulnerability by repeatedly creating or deleting a VPN tunnel connection, which could leak a small amount of system memory for each logging event. A successful exploit could allow the attacker to cause system memory depletion, which can lead to a systemwide denial of service (DoS) condition. The attacker does not have any control of whether VPN System Logging is configured or not on the device, but it is enabled by default.
CWE
CWE-400Affected Products
cisco secure firewall threat defensecisco asa 5505 firmwarecisco asa 5510 firmwarecisco asa 5512-x firmwarecisco asa 5515-x firmwarecisco asa 5520 firmwarecisco asa 5525-x firmwarecisco asa 5540 firmwarecisco asa 5545-x firmwarecisco asa 5550 firmware