Vulnerability Details : CVE-2020-3196
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.
Vulnerability category: Denial of service
Products affected by CVE-2020-3196
- Cisco » Adaptive Security Appliance SoftwareVersions from including (>=) 9.13 and before (<) 9.13.1.7cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
- Cisco » Adaptive Security Appliance SoftwareVersions from including (>=) 9.12 and before (<) 9.12.3.2cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
- Cisco » Adaptive Security Appliance SoftwareVersions from including (>=) 9.8 and before (<) 9.8.4.20cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
- Cisco » Adaptive Security Appliance SoftwareVersions from including (>=) 9.10 and before (<) 9.10.1.37cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
- Cisco » Adaptive Security Appliance SoftwareVersions from including (>=) 9.9 and before (<) 9.9.2.66cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
- Cisco » Adaptive Security Appliance SoftwareVersions from including (>=) 9.6 and before (<) 9.6.4.40cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5505_firmware:9.4\(4\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5505_firmware:9.8\(4.18\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5505_firmware:100.13\(0\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5510_firmware:9.4\(4\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5510_firmware:9.8\(4.18\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5510_firmware:100.13\(0\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5512-x_firmware:9.4\(4\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5512-x_firmware:9.8\(4.18\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5512-x_firmware:100.13\(0\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5515-x_firmware:9.4\(4\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5515-x_firmware:9.8\(4.18\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5515-x_firmware:100.13\(0\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5520_firmware:9.4\(4\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5520_firmware:9.8\(4.18\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5520_firmware:100.13\(0\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5525-x_firmware:9.4\(4\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5525-x_firmware:9.8\(4.18\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5525-x_firmware:100.13\(0\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5540_firmware:9.4\(4\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5540_firmware:9.8\(4.18\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5540_firmware:100.13\(0\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5545-x_firmware:9.4\(4\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5545-x_firmware:9.8\(4.18\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5545-x_firmware:100.13\(0\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5550_firmware:9.4\(4\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5550_firmware:9.8\(4.18\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5550_firmware:100.13\(0\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5555-x_firmware:9.4\(4\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5555-x_firmware:9.8\(4.18\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5555-x_firmware:100.13\(0\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5580_firmware:9.4\(4\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5580_firmware:9.8\(4.18\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5580_firmware:100.13\(0\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5585-x_firmware:9.4\(4\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5585-x_firmware:9.8\(4.18\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:asa_5585-x_firmware:100.13\(0\):*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-3196
0.16%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 52 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-3196
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
8.6
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
3.9
|
4.0
|
Cisco Systems, Inc. | |
8.6
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
3.9
|
4.0
|
NIST |
CWE ids for CVE-2020-3196
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by:
- nvd@nist.gov (Primary)
- ykramarz@cisco.com (Secondary)
References for CVE-2020-3196
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ssl-vpn-dos-qY7BHpjN
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS Denial of Service VulnerabilityVendor Advisory
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