CVE-2020-3189
A vulnerability in the VPN System Logging functionality for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to ca…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Cisco | Secure Firewall Threat Defense | Versions 6.2.3.12, 6.2.3.13, 6.2.3.14, 6.2.3.15 |
| Cisco | Asa 5505 Firmware | Versions 9.9\(2\), 9.9\(2.21\), 9.9\(2.52\), 9.9\(2.55\) |
| Cisco | Asa 5510 Firmware | Versions 9.9\(2\), 9.9\(2.21\), 9.9\(2.52\), 9.9\(2.55\) |
| Cisco | Asa 5512-X Firmware | Versions 9.9\(2\), 9.9\(2.21\), 9.9\(2.52\), 9.9\(2.55\) |
| Cisco | Asa 5515-X Firmware | Versions 9.9\(2\), 9.9\(2.21\), 9.9\(2.52\), 9.9\(2.55\) |
| Cisco | Asa 5520 Firmware | Versions 9.9\(2\), 9.9\(2.21\), 9.9\(2.52\), 9.9\(2.55\) |
| Cisco | Asa 5525-X Firmware | Versions 9.9\(2\), 9.9\(2.21\), 9.9\(2.52\), 9.9\(2.55\) |
| Cisco | Asa 5540 Firmware | Versions 9.9\(2\), 9.9\(2.21\), 9.9\(2.52\), 9.9\(2.55\) |
| Cisco | Asa 5545-X Firmware | Versions 9.9\(2\), 9.9\(2.21\), 9.9\(2.52\), 9.9\(2.55\) |
| Cisco | Asa 5550 Firmware | Versions 9.9\(2\), 9.9\(2.21\), 9.9\(2.52\), 9.9\(2.55\) |
| Cisco | Asa 5555-X Firmware | Versions 9.9\(2\), 9.9\(2.21\), 9.9\(2.52\), 9.9\(2.55\) |
| Cisco | Asa 5580 Firmware | Versions 9.9\(2\), 9.9\(2.21\), 9.9\(2.52\), 9.9\(2.55\) |