Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Firepower Threat Defense | >= 6.2.3, < 6.2.3.16 |
| Cisco | Asa 5505 Firmware | 9.4\(4\) |
| Cisco | Asa 5505 | - |
| Cisco | Asa 5510 Firmware | 9.4\(4\) |
| Cisco | Asa 5510 | - |
| Cisco | Asa 5512-X Firmware | 9.4\(4\) |
| Cisco | Asa 5512-X | - |
| Cisco | Asa 5515-X Firmware | 9.4\(4\) |
| Cisco | Asa 5515-X | - |
| Cisco | Asa 5520 Firmware | 9.4\(4\) |
| Cisco | Asa 5520 | - |
| Cisco | Asa 5525-X Firmware | 9.4\(4\) |
| Cisco | Asa 5525-X | - |
| Cisco | Asa 5540 Firmware | 9.4\(4\) |
| Cisco | Asa 5540 | - |
| Cisco | Asa 5545-X Firmware | 9.4\(4\) |
| Cisco | Asa 5545-X | - |
| Cisco | Asa 5550 Firmware | 9.4\(4\) |
| Cisco | Asa 5550 | - |
| Cisco | Asa 5555-X Firmware | 9.4\(4\) |
Related Weaknesses (CWE)
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aVendor Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aVendor Advisory
FAQ
What is CVE-2020-3196?
CVE-2020-3196 is a vulnerability with a CVSS score of 8.6 (HIGH). 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 all...
How severe is CVE-2020-3196?
CVE-2020-3196 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-3196?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Firepower Threat Defense, Cisco Asa 5505 Firmware, Cisco Asa 5505, Cisco Asa 5510 Firmware, Cisco Asa 5510.