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.
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 26 products from cisco, from cisco, from cisco and 23 others, organizations running these solutions should prioritize assessment and patching.
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.
2020-05-06T17:15:12.290
2024-11-21T05:30:30.980
Modified
CVSSv3.1: 8.6 (HIGH)
AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | cisco | firepower_threat_defense | < 6.2.3.16 | Yes |
| Application | cisco | firepower_threat_defense | < 6.3.0.6 | Yes |
| Application | cisco | firepower_threat_defense | < 6.4.0.6 | Yes |
| Operating System | cisco | asa_5505_firmware | 9.4\(1\) | Yes |
| Operating System | cisco | asa_5505_firmware | 96.4\(0.42\) | Yes |
| Hardware | cisco | asa_5505 | - | No |
| Operating System | cisco | asa_5510_firmware | 9.4\(1\) | Yes |
| Operating System | cisco | asa_5510_firmware | 96.4\(0.42\) | Yes |
| Hardware | cisco | asa_5510 | - | No |
| Operating System | cisco | asa_5512-x_firmware | 9.4\(1\) | Yes |
| Operating System | cisco | asa_5512-x_firmware | 96.4\(0.42\) | Yes |
| Hardware | cisco | asa_5512-x | - | No |
| Operating System | cisco | asa_5515-x_firmware | 9.4\(1\) | Yes |
| Operating System | cisco | asa_5515-x_firmware | 96.4\(0.42\) | Yes |
| Hardware | cisco | asa_5515-x | - | No |
| Operating System | cisco | asa_5520_firmware | 9.4\(1\) | Yes |
| Operating System | cisco | asa_5520_firmware | 96.4\(0.42\) | Yes |
| Hardware | cisco | asa_5520 | - | No |
| Operating System | cisco | asa_5525-x_firmware | 9.4\(1\) | Yes |
| Operating System | cisco | asa_5525-x_firmware | 96.4\(0.42\) | Yes |
| Hardware | cisco | asa_5525-x | - | No |
| Operating System | cisco | asa_5540_firmware | 9.4\(1\) | Yes |
| Operating System | cisco | asa_5540_firmware | 96.4\(0.42\) | Yes |
| Hardware | cisco | asa_5540 | - | No |
| Operating System | cisco | asa_5545-x_firmware | 9.4\(1\) | Yes |
| Operating System | cisco | asa_5545-x_firmware | 96.4\(0.42\) | Yes |
| Hardware | cisco | asa_5545-x | - | No |
| Operating System | cisco | asa_5550_firmware | 9.4\(1\) | Yes |
| Operating System | cisco | asa_5550_firmware | 96.4\(0.42\) | Yes |
| Hardware | cisco | asa_5550 | - | No |
| Operating System | cisco | asa_5555-x_firmware | 9.4\(1\) | Yes |
| Operating System | cisco | asa_5555-x_firmware | 96.4\(0.42\) | Yes |
| Hardware | cisco | asa_5555-x | - | No |
| Operating System | cisco | asa_5580_firmware | 9.4\(1\) | Yes |
| Operating System | cisco | asa_5580_firmware | 96.4\(0.42\) | Yes |
| Hardware | cisco | asa_5580 | - | No |
| Operating System | cisco | asa_5585-x_firmware | 9.4\(1\) | Yes |
| Operating System | cisco | asa_5585-x_firmware | 96.4\(0.42\) | Yes |
| Hardware | cisco | asa_5585-x | - | No |
| Operating System | cisco | adaptive_security_appliance_software | < 9.6.4.36 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.8.4.12 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.9.2.66 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.10.1.37 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.12.2.9 | Yes |
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.