CVE-2020-3196
Cisco ASA and FTD SSL/TLS Resource Exhaustion Denial of Service 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.
INFO
Published Date :
May 6, 2020, 5:15 p.m.
Last Modified :
Aug. 16, 2023, 4:17 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.0
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2020-3196
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-3196.
| URL | Resource |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ssl-vpn-dos-qY7BHpjN | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-3196 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-3196 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
May. 13, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ssl-vpn-dos-qY7BHpjN No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ssl-vpn-dos-qY7BHpjN Vendor Advisory Added CWE NIST CWE-400 Added CPE Configuration OR *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions from (including) 6.2.3 up to (excluding) 6.2.3.16 *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions from (including) 6.3.0 up to (excluding) 6.3.0.6 *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions from (including) 6.4.0 up to (excluding) 6.4.0.9 *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions from (including) 6.5.0 up to (excluding) 6.5.0.5 Added CPE Configuration AND OR *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\(0\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5505:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *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\(0\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5510:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *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\(0\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *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\(0\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5515-x:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *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\(0\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5520:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *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\(0\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5525-x:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *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\(0\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5540:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *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\(0\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5545-x:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *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\(0\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5550:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *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\(0\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5555-x:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *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\(0\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5580:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *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\(0\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5585-x:-:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* versions from (including) 9.6 up to (excluding) 9.6.4.40 *cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* versions from (including) 9.8 up to (excluding) 9.8.4.20 *cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* versions from (including) 9.9 up to (excluding) 9.9.2.66 *cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* versions from (including) 9.10 up to (excluding) 9.10.1.37 *cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* versions from (including) 9.12 up to (excluding) 9.12.3.2 *cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* versions from (including) 9.13 up to (excluding) 9.13.1.7
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-3196 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-3196
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.16 }} 0.00%
score
0.50780
percentile