Vulnerability Monitor

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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.


Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.6, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 25 products from cisco, from cisco, from cisco and 22 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2020-05-06T17:15:12.230

Last Modified

2024-11-21T05:30:30.713

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.6 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Secondary
    CWE-400
  • Type: Primary
    CWE-401

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cisco firepower_threat_defense 6.2.3.12 Yes
Application cisco firepower_threat_defense 6.2.3.13 Yes
Application cisco firepower_threat_defense 6.2.3.14 Yes
Application cisco firepower_threat_defense 6.2.3.15 Yes
Operating System cisco asa_5505_firmware 9.9\(2\) Yes
Operating System cisco asa_5505_firmware 9.9\(2.21\) Yes
Operating System cisco asa_5505_firmware 9.9\(2.52\) Yes
Operating System cisco asa_5505_firmware 9.9\(2.55\) Yes
Hardware cisco asa_5505 - No
Operating System cisco asa_5510_firmware 9.9\(2\) Yes
Operating System cisco asa_5510_firmware 9.9\(2.21\) Yes
Operating System cisco asa_5510_firmware 9.9\(2.52\) Yes
Operating System cisco asa_5510_firmware 9.9\(2.55\) Yes
Hardware cisco asa_5510 - No
Operating System cisco asa_5512-x_firmware 9.9\(2\) Yes
Operating System cisco asa_5512-x_firmware 9.9\(2.21\) Yes
Operating System cisco asa_5512-x_firmware 9.9\(2.52\) Yes
Operating System cisco asa_5512-x_firmware 9.9\(2.55\) Yes
Hardware cisco asa_5512-x - No
Operating System cisco asa_5515-x_firmware 9.9\(2\) Yes
Operating System cisco asa_5515-x_firmware 9.9\(2.21\) Yes
Operating System cisco asa_5515-x_firmware 9.9\(2.52\) Yes
Operating System cisco asa_5515-x_firmware 9.9\(2.55\) Yes
Hardware cisco asa_5515-x - No
Operating System cisco asa_5520_firmware 9.9\(2\) Yes
Operating System cisco asa_5520_firmware 9.9\(2.21\) Yes
Operating System cisco asa_5520_firmware 9.9\(2.52\) Yes
Operating System cisco asa_5520_firmware 9.9\(2.55\) Yes
Hardware cisco asa_5520 - No
Operating System cisco asa_5525-x_firmware 9.9\(2\) Yes
Operating System cisco asa_5525-x_firmware 9.9\(2.21\) Yes
Operating System cisco asa_5525-x_firmware 9.9\(2.52\) Yes
Operating System cisco asa_5525-x_firmware 9.9\(2.55\) Yes
Hardware cisco asa_5525-x - No
Operating System cisco asa_5540_firmware 9.9\(2\) Yes
Operating System cisco asa_5540_firmware 9.9\(2.21\) Yes
Operating System cisco asa_5540_firmware 9.9\(2.52\) Yes
Operating System cisco asa_5540_firmware 9.9\(2.55\) Yes
Hardware cisco asa_5540 - No
Operating System cisco asa_5545-x_firmware 9.9\(2\) Yes
Operating System cisco asa_5545-x_firmware 9.9\(2.21\) Yes
Operating System cisco asa_5545-x_firmware 9.9\(2.52\) Yes
Operating System cisco asa_5545-x_firmware 9.9\(2.55\) Yes
Hardware cisco asa_5545-x - No
Operating System cisco asa_5550_firmware 9.9\(2\) Yes
Operating System cisco asa_5550_firmware 9.9\(2.21\) Yes
Operating System cisco asa_5550_firmware 9.9\(2.52\) Yes
Operating System cisco asa_5550_firmware 9.9\(2.55\) Yes
Hardware cisco asa_5550 - No
Operating System cisco asa_5555-x_firmware 9.9\(2\) Yes
Operating System cisco asa_5555-x_firmware 9.9\(2.21\) Yes
Operating System cisco asa_5555-x_firmware 9.9\(2.52\) Yes
Operating System cisco asa_5555-x_firmware 9.9\(2.55\) Yes
Hardware cisco asa_5555-x - No
Operating System cisco asa_5580_firmware 9.9\(2\) Yes
Operating System cisco asa_5580_firmware 9.9\(2.21\) Yes
Operating System cisco asa_5580_firmware 9.9\(2.52\) Yes
Operating System cisco asa_5580_firmware 9.9\(2.55\) Yes
Hardware cisco asa_5580 - No
Operating System cisco asa_5585-x_firmware 9.9\(2\) Yes
Operating System cisco asa_5585-x_firmware 9.9\(2.21\) Yes
Operating System cisco asa_5585-x_firmware 9.9\(2.52\) Yes
Operating System cisco asa_5585-x_firmware 9.9\(2.55\) Yes
Hardware cisco asa_5585-x - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.