Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software IPv6 DNS Denial of Service Vulnerability (Cisco Cisco Adaptive Security Appliance (ASA) 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 DNS over IPv6 packet processing for Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to unexpectedly reload, resulting in a denial of service (DoS) condition. The vulnerability is due to improper length validation of a field in an IPv6 DNS packet. An attacker could exploit this vulnerability by sending a crafted DNS query over IPv6, which traverses the affected device. An exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. This vulnerability is specific to DNS over IPv6 traffic only.
Weaknesses (CWE)
- CWE-20 — Improper Input Validation
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-2020-24462
- GCVE · GCVE-0-2020-3191
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 < 6.4.0.6cpe:2.3:o:cisco:asa_5505_firmware:9.4\(1\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5505_firmware:96.4\(0.42\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5510_firmware:9.4\(1\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5510_firmware:96.4\(0.42\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5512-x_firmware:9.4\(1\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5512-x_firmware:96.4\(0.42\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5515-x_firmware:9.4\(1\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5515-x_firmware:96.4\(0.42\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5520_firmware:9.4\(1\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5520_firmware:96.4\(0.42\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5525-x_firmware:9.4\(1\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5525-x_firmware:96.4\(0.42\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5540_firmware:9.4\(1\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5540_firmware:96.4\(0.42\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5545-x_firmware:9.4\(1\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5545-x_firmware:96.4\(0.42\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5550_firmware:9.4\(1\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5550_firmware:96.4\(0.42\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5555-x_firmware:9.4\(1\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5555-x_firmware:96.4\(0.42\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5580_firmware:9.4\(1\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5580_firmware:96.4\(0.42\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5585-x_firmware:9.4\(1\):*:*:*:*:*:*:*cpe:2.3:o:cisco:asa_5585-x_firmware:96.4\(0.42\):*:*:*:*:*:*:*cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*≥ 9.6 < 9.6.4.36cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*≥ 9.8 < 9.8.4.12cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*≥ 9.9 < 9.9.2.66cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*≥ 9.10 < 9.10.1.37cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*≥ 9.12 < 9.12.2.9
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 |