Cisco Firepower Threat Defense Software VPN System Logging Denial of Service Vulnerability (Cisco Cisco Firepower Threat Defense Software)
At a glance
- Source
- NVD
- EPSS
- EPSS 1.86 % · percentile 79 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-400 — Uncontrolled Resource Consumption
- CWE-401 — Missing Release of Memory after Effective Lifetime
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | HIGH 8.6 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | cisco |
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.0 | HIGH 8.6 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | NVD · psirt@cisco.com (Secondary) |
| CVSS 2.0 | MEDIUM 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2020-24460
- GCVE · GCVE-0-2020-3189
CERT-FR advisories
- CERTFR-2020-AVI-274 — Multiples vulnérabilités dans les produits Cisco · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.12:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.13:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.14:*:*:*:*:*:*:*cpe:2.3:a:cisco:secure_firewall_threat_defense:6.2.3.15:*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5505_firmware:9.9\(2\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5505_firmware:9.9\(2.21\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5505_firmware:9.9\(2.52\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5505_firmware:9.9\(2.55\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5510_firmware:9.9\(2\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5510_firmware:9.9\(2.21\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5510_firmware:9.9\(2.52\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5510_firmware:9.9\(2.55\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5512-x_firmware:9.9\(2\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5512-x_firmware:9.9\(2.21\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5512-x_firmware:9.9\(2.52\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5512-x_firmware:9.9\(2.55\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5515-x_firmware:9.9\(2\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5515-x_firmware:9.9\(2.21\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5515-x_firmware:9.9\(2.52\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5515-x_firmware:9.9\(2.55\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5520_firmware:9.9\(2\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5520_firmware:9.9\(2.21\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5520_firmware:9.9\(2.52\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5520_firmware:9.9\(2.55\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5525-x_firmware:9.9\(2\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5525-x_firmware:9.9\(2.21\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5525-x_firmware:9.9\(2.52\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5525-x_firmware:9.9\(2.55\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5540_firmware:9.9\(2\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5540_firmware:9.9\(2.21\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5540_firmware:9.9\(2.52\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5540_firmware:9.9\(2.55\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5545-x_firmware:9.9\(2\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5545-x_firmware:9.9\(2.21\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5545-x_firmware:9.9\(2.52\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5545-x_firmware:9.9\(2.55\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5550_firmware:9.9\(2\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5550_firmware:9.9\(2.21\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5550_firmware:9.9\(2.52\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5550_firmware:9.9\(2.55\):*:*:*:*:*:*:*- +12 more
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco Firepower Threat Defense Software | affected n/a |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |