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.
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.
2020-05-06T17:15:12.417
2024-11-21T05:30:31.633
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 | < 6.4.0.9 | Yes |
| Application | cisco | firepower_threat_defense | < 6.5.0.5 | Yes |
| Operating System | cisco | asa_5505_firmware | 9.4\(4\) | Yes |
| Operating System | cisco | asa_5505_firmware | 9.8\(4.18\) | Yes |
| Operating System | cisco | asa_5505_firmware | 100.13\(0\) | Yes |
| Hardware | cisco | asa_5505 | - | No |
| Operating System | cisco | asa_5510_firmware | 9.4\(4\) | Yes |
| Operating System | cisco | asa_5510_firmware | 9.8\(4.18\) | Yes |
| Operating System | cisco | asa_5510_firmware | 100.13\(0\) | Yes |
| Hardware | cisco | asa_5510 | - | No |
| Operating System | cisco | asa_5512-x_firmware | 9.4\(4\) | Yes |
| Operating System | cisco | asa_5512-x_firmware | 9.8\(4.18\) | Yes |
| Operating System | cisco | asa_5512-x_firmware | 100.13\(0\) | Yes |
| Hardware | cisco | asa_5512-x | - | No |
| Operating System | cisco | asa_5515-x_firmware | 9.4\(4\) | Yes |
| Operating System | cisco | asa_5515-x_firmware | 9.8\(4.18\) | Yes |
| Operating System | cisco | asa_5515-x_firmware | 100.13\(0\) | Yes |
| Hardware | cisco | asa_5515-x | - | No |
| Operating System | cisco | asa_5520_firmware | 9.4\(4\) | Yes |
| Operating System | cisco | asa_5520_firmware | 9.8\(4.18\) | Yes |
| Operating System | cisco | asa_5520_firmware | 100.13\(0\) | Yes |
| Hardware | cisco | asa_5520 | - | No |
| Operating System | cisco | asa_5525-x_firmware | 9.4\(4\) | Yes |
| Operating System | cisco | asa_5525-x_firmware | 9.8\(4.18\) | Yes |
| Operating System | cisco | asa_5525-x_firmware | 100.13\(0\) | Yes |
| Hardware | cisco | asa_5525-x | - | No |
| Operating System | cisco | asa_5540_firmware | 9.4\(4\) | Yes |
| Operating System | cisco | asa_5540_firmware | 9.8\(4.18\) | Yes |
| Operating System | cisco | asa_5540_firmware | 100.13\(0\) | Yes |
| Hardware | cisco | asa_5540 | - | No |
| Operating System | cisco | asa_5545-x_firmware | 9.4\(4\) | Yes |
| Operating System | cisco | asa_5545-x_firmware | 9.8\(4.18\) | Yes |
| Operating System | cisco | asa_5545-x_firmware | 100.13\(0\) | Yes |
| Hardware | cisco | asa_5545-x | - | No |
| Operating System | cisco | asa_5550_firmware | 9.4\(4\) | Yes |
| Operating System | cisco | asa_5550_firmware | 9.8\(4.18\) | Yes |
| Operating System | cisco | asa_5550_firmware | 100.13\(0\) | Yes |
| Hardware | cisco | asa_5550 | - | No |
| Operating System | cisco | asa_5555-x_firmware | 9.4\(4\) | Yes |
| Operating System | cisco | asa_5555-x_firmware | 9.8\(4.18\) | Yes |
| Operating System | cisco | asa_5555-x_firmware | 100.13\(0\) | Yes |
| Hardware | cisco | asa_5555-x | - | No |
| Operating System | cisco | asa_5580_firmware | 9.4\(4\) | Yes |
| Operating System | cisco | asa_5580_firmware | 9.8\(4.18\) | Yes |
| Operating System | cisco | asa_5580_firmware | 100.13\(0\) | Yes |
| Hardware | cisco | asa_5580 | - | No |
| Operating System | cisco | asa_5585-x_firmware | 9.4\(4\) | Yes |
| Operating System | cisco | asa_5585-x_firmware | 9.8\(4.18\) | Yes |
| Operating System | cisco | asa_5585-x_firmware | 100.13\(0\) | Yes |
| Hardware | cisco | asa_5585-x | - | No |
| Operating System | cisco | adaptive_security_appliance_software | < 9.6.4.40 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.8.4.20 | 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 | < 9.12.3.2 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.13.1.7 | 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.