A vulnerability in the SSL VPN negotiation process for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to inefficient direct memory access (DMA) memory management during the negotiation phase of an SSL VPN connection. An attacker could exploit this vulnerability by sending a steady stream of crafted Datagram TLS (DTLS) traffic to an affected device. A successful exploit could allow the attacker to exhaust DMA memory on the device and cause a DoS condition.
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 3 products from cisco, from cisco, from cisco 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.
2020-10-21T19:15:16.967
2024-11-21T05:31:15.557
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 | adaptive_security_appliance | < 9.6.4.45 | Yes |
| Application | cisco | firepower_threat_defense | < 6.3.0.6 | Yes |
| Application | cisco | firepower_threat_defense | < 6.4.0.10 | Yes |
| Application | cisco | firepower_threat_defense | < 6.5.0.5 | Yes |
| Application | cisco | firepower_threat_defense | < 6.6.1 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.8.4.29 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.9.2.80 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.10.1.44 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.12.4.4 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.13.1.13 | Yes |
| Operating System | cisco | adaptive_security_appliance_software | < 9.14.1.30 | 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.