A vulnerability in the generic routing encapsulation (GRE) tunnel decapsulation feature of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a memory handling error when GRE over IPv6 traffic is processed. An attacker could exploit this vulnerability by sending crafted GRE over IPv6 packets with either IPv4 or IPv6 payload through an affected device. A successful exploit could allow the attacker to cause the device to crash, resulting in a DoS condition.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, 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.
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.
2020-05-06T17:15:11.917
2024-11-21T05:30:29.540
Modified
CVSSv3.1: 7.5 (HIGH)
AV:N/AC:L/Au:N/C:N/I:N/A:C
10.0
6.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | cisco | firepower_threat_defense | < 6.3.0.5 | Yes |
| Application | cisco | firepower_threat_defense | < 6.4.0.6 | Yes |
| Operating System | cisco | asa_5505_firmware | 9.9\(2\) | Yes |
| Operating System | cisco | asa_5505_firmware | 101.5\(1.26\) | Yes |
| Hardware | cisco | asa_5505 | - | No |
| Operating System | cisco | asa_5510_firmware | 9.9\(2\) | Yes |
| Operating System | cisco | asa_5510_firmware | 101.5\(1.26\) | Yes |
| Hardware | cisco | asa_5510 | - | No |
| Operating System | cisco | asa_5512-x_firmware | 9.9\(2\) | Yes |
| Operating System | cisco | asa_5512-x_firmware | 101.5\(1.26\) | 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 | 101.5\(1.26\) | Yes |
| Hardware | cisco | asa_5515-x | - | No |
| Operating System | cisco | asa_5520_firmware | 9.9\(2\) | Yes |
| Operating System | cisco | asa_5520_firmware | 101.5\(1.26\) | Yes |
| Hardware | cisco | asa_5520 | - | No |
| Operating System | cisco | asa_5525-x_firmware | 9.9\(2\) | Yes |
| Operating System | cisco | asa_5525-x_firmware | 101.5\(1.26\) | Yes |
| Hardware | cisco | asa_5525-x | - | No |
| Operating System | cisco | asa_5540_firmware | 9.9\(2\) | Yes |
| Operating System | cisco | asa_5540_firmware | 101.5\(1.26\) | Yes |
| Hardware | cisco | asa_5540 | - | No |
| Operating System | cisco | asa_5545-x_firmware | 9.9\(2\) | Yes |
| Operating System | cisco | asa_5545-x_firmware | 101.5\(1.26\) | Yes |
| Hardware | cisco | asa_5545-x | - | No |
| Operating System | cisco | asa_5550_firmware | 9.9\(2\) | Yes |
| Operating System | cisco | asa_5550_firmware | 101.5\(1.26\) | Yes |
| Hardware | cisco | asa_5550 | - | No |
| Operating System | cisco | asa_5555-x_firmware | 9.9\(2\) | Yes |
| Operating System | cisco | asa_5555-x_firmware | 101.5\(1.26\) | Yes |
| Hardware | cisco | asa_5555-x | - | No |
| Operating System | cisco | asa_5580_firmware | 9.9\(2\) | Yes |
| Operating System | cisco | asa_5580_firmware | 101.5\(1.26\) | Yes |
| Hardware | cisco | asa_5580 | - | No |
| Operating System | cisco | asa_5585-x_firmware | 9.9\(2\) | Yes |
| Operating System | cisco | asa_5585-x_firmware | 101.5\(1.26\) | Yes |
| Hardware | cisco | asa_5585-x | - | No |
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.