Strix
26.1K

CVE-2020-3189

HIGHCVSS 8.6/10EPSS 1.80%

Last modified

CVE-2020-3189 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. 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. EPSS estimates a 1.80% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
8.6/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS Probability
1.80%

75.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoFirepower Threat Defense6.2.3.12
CiscoFirepower Threat Defense6.2.3.13
CiscoFirepower Threat Defense6.2.3.14
CiscoFirepower Threat Defense6.2.3.15
CiscoAsa 5505 Firmware9.9\(2\)
CiscoAsa 5505 Firmware9.9\(2.21\)
CiscoAsa 5505 Firmware9.9\(2.52\)
CiscoAsa 5505 Firmware9.9\(2.55\)
CiscoAsa 5510 Firmware9.9\(2\)
CiscoAsa 5510 Firmware9.9\(2.21\)
CiscoAsa 5510 Firmware9.9\(2.52\)
CiscoAsa 5510 Firmware9.9\(2.55\)
CiscoAsa 5512-X Firmware9.9\(2\)
CiscoAsa 5512-X Firmware9.9\(2.21\)
CiscoAsa 5512-X Firmware9.9\(2.52\)
CiscoAsa 5512-X Firmware9.9\(2.55\)
CiscoAsa 5515-X Firmware9.9\(2\)
CiscoAsa 5515-X Firmware9.9\(2.21\)
CiscoAsa 5515-X Firmware9.9\(2.52\)
CiscoAsa 5515-X Firmware9.9\(2.55\)
CiscoAsa 5520 Firmware9.9\(2\)
CiscoAsa 5520 Firmware9.9\(2.21\)
CiscoAsa 5520 Firmware9.9\(2.52\)
CiscoAsa 5520 Firmware9.9\(2.55\)
CiscoAsa 5525-X Firmware9.9\(2\)
CiscoAsa 5525-X Firmware9.9\(2.21\)
CiscoAsa 5525-X Firmware9.9\(2.52\)
CiscoAsa 5525-X Firmware9.9\(2.55\)
CiscoAsa 5540 Firmware9.9\(2\)
CiscoAsa 5540 Firmware9.9\(2.21\)
CiscoAsa 5540 Firmware9.9\(2.52\)
CiscoAsa 5540 Firmware9.9\(2.55\)
CiscoAsa 5545-X Firmware9.9\(2\)
CiscoAsa 5545-X Firmware9.9\(2.21\)
CiscoAsa 5545-X Firmware9.9\(2.52\)
CiscoAsa 5545-X Firmware9.9\(2.55\)
CiscoAsa 5550 Firmware9.9\(2\)
CiscoAsa 5550 Firmware9.9\(2.21\)
CiscoAsa 5550 Firmware9.9\(2.52\)
CiscoAsa 5550 Firmware9.9\(2.55\)
CiscoAsa 5555-X Firmware9.9\(2\)
CiscoAsa 5555-X Firmware9.9\(2.21\)
CiscoAsa 5555-X Firmware9.9\(2.52\)
CiscoAsa 5555-X Firmware9.9\(2.55\)
CiscoAsa 5580 Firmware9.9\(2\)
CiscoAsa 5580 Firmware9.9\(2.21\)
CiscoAsa 5580 Firmware9.9\(2.52\)
CiscoAsa 5580 Firmware9.9\(2.55\)
CiscoAsa 5585-X Firmware9.9\(2\)
CiscoAsa 5585-X Firmware9.9\(2.21\)

Showing 50 of 52 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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 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.
How severe is CVE-2020-3189?
CVE-2020-3189 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 1.80% probability of exploitation in the next 30 days.
How do I fix CVE-2020-3189?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-3189?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST