CVE-2020-3196
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS Denial of Service Vulnerability
At a glance
- Source
- NVD
- EPSS
- EPSS 1.91 % · percentile 80 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Modified
Description
A vulnerability in the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) handler of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to exhaust memory resources on the affected device, leading to a denial of service (DoS) condition. The vulnerability is due to improper resource management for inbound SSL/TLS connections. An attacker could exploit this vulnerability by establishing multiple SSL/TLS connections with specific conditions to the affected device. A successful exploit could allow the attacker to exhaust the memory on the affected device, causing the device to stop accepting new SSL/TLS connections and resulting in a DoS condition for services on the device that process SSL/TLS traffic. Manual intervention is required to recover an affected device.
Weaknesses (CWE)
- CWE-400 — Uncontrolled Resource Consumption
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-2020-24467
- GCVE · GCVE-0-2020-3196
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 < 6.2.3.16cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*≥ 6.3.0 < 6.3.0.6cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*≥ 6.4.0 < 6.4.0.9cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*≥ 6.5.0 < 6.5.0.5cpe:2.3:o:cisco:asa_5505_firmware:9.4\(4\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5505_firmware:9.8\(4.18\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5505_firmware:100.13\(0\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5510_firmware:9.4\(4\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5510_firmware:9.8\(4.18\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5510_firmware:100.13\(0\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5512-x_firmware:9.4\(4\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5512-x_firmware:9.8\(4.18\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5512-x_firmware:100.13\(0\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5515-x_firmware:9.4\(4\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5515-x_firmware:9.8\(4.18\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5515-x_firmware:100.13\(0\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5520_firmware:9.4\(4\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5520_firmware:9.8\(4.18\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5520_firmware:100.13\(0\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5525-x_firmware:9.4\(4\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5525-x_firmware:9.8\(4.18\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5525-x_firmware:100.13\(0\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5540_firmware:9.4\(4\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5540_firmware:9.8\(4.18\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5540_firmware:100.13\(0\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5545-x_firmware:9.4\(4\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5545-x_firmware:9.8\(4.18\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5545-x_firmware:100.13\(0\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5550_firmware:9.4\(4\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5550_firmware:9.8\(4.18\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5550_firmware:100.13\(0\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5555-x_firmware:9.4\(4\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5555-x_firmware:9.8\(4.18\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5555-x_firmware:100.13\(0\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5580_firmware:9.4\(4\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5580_firmware:9.8\(4.18\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5580_firmware:100.13\(0\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5585-x_firmware:9.4\(4\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5585-x_firmware:9.8\(4.18\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5585-x_firmware:100.13\(0\):*:*:*:*:*:*:*- +6 more
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco Adaptive Security Appliance (ASA) 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 |