CVE-2020-3196

CVSS V2 Medium 5 CVSS V3 High 8.6

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.

Overview

CVE ID
CVE-2020-3196

Assigner
ykramarz@cisco.com

Vulnerability Status
Analyzed

Published Version
2020-05-06T17:15:12

Last Modified Date
2020-05-13T17:58:14

Weakness Enumerations

CWE	URL
CWE-400	http://cwe.mitre.org/data/definitions/400.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
		AND
cpe:2.3:a:cisco:firepower_threat_defense::::::::	1	OR	6.2.3	6.2.3.16
cpe:2.3:a:cisco:firepower_threat_defense::::::::	1	OR	6.3.0	6.3.0.6
cpe:2.3:a:cisco:firepower_threat_defense::::::::	1	OR	6.4.0	6.4.0.9
cpe:2.3:a:cisco:firepower_threat_defense::::::::	1	OR	6.5.0	6.5.0.5
		AND
cpe:2.3:o:cisco:asa_5505_firmware:9.4\(4\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5505_firmware:9.8\(4.18\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5505_firmware:100.13\(0\):::::::*	1	OR
cpe:2.3:h:cisco:asa_5505:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:asa_5510_firmware:9.4\(4\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5510_firmware:9.8\(4.18\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5510_firmware:100.13\(0\):::::::*	1	OR
cpe:2.3:h:cisco:asa_5510:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:asa_5512-x_firmware:9.4\(4\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5512-x_firmware:9.8\(4.18\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5512-x_firmware:100.13\(0\):::::::*	1	OR
cpe:2.3:h:cisco:asa_5512-x:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:asa_5515-x_firmware:9.4\(4\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5515-x_firmware:9.8\(4.18\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5515-x_firmware:100.13\(0\):::::::*	1	OR
cpe:2.3:h:cisco:asa_5515-x:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:asa_5520_firmware:9.4\(4\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5520_firmware:9.8\(4.18\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5520_firmware:100.13\(0\):::::::*	1	OR
cpe:2.3:h:cisco:asa_5520:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:asa_5525-x_firmware:9.4\(4\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5525-x_firmware:9.8\(4.18\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5525-x_firmware:100.13\(0\):::::::*	1	OR
cpe:2.3:h:cisco:asa_5525-x:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:asa_5540_firmware:9.4\(4\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5540_firmware:9.8\(4.18\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5540_firmware:100.13\(0\):::::::*	1	OR
cpe:2.3:h:cisco:asa_5540:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:asa_5545-x_firmware:9.4\(4\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5545-x_firmware:9.8\(4.18\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5545-x_firmware:100.13\(0\):::::::*	1	OR
cpe:2.3:h:cisco:asa_5545-x:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:asa_5550_firmware:9.4\(4\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5550_firmware:9.8\(4.18\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5550_firmware:100.13\(0\):::::::*	1	OR
cpe:2.3:h:cisco:asa_5550:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:asa_5555-x_firmware:9.4\(4\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5555-x_firmware:9.8\(4.18\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5555-x_firmware:100.13\(0\):::::::*	1	OR
cpe:2.3:h:cisco:asa_5555-x:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:asa_5580_firmware:9.4\(4\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5580_firmware:9.8\(4.18\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5580_firmware:100.13\(0\):::::::*	1	OR
cpe:2.3:h:cisco:asa_5580:-:::::::*	0	OR
		AND
cpe:2.3:o:cisco:asa_5585-x_firmware:9.4\(4\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5585-x_firmware:9.8\(4.18\):::::::*	1	OR
cpe:2.3:o:cisco:asa_5585-x_firmware:100.13\(0\):::::::*	1	OR
cpe:2.3:h:cisco:asa_5585-x:-:::::::*	0	OR
		AND
cpe:2.3:a:cisco:adaptive_security_appliance::::::::	1	OR	9.6	9.6.4.40
cpe:2.3:a:cisco:adaptive_security_appliance::::::::	1	OR	9.8	9.8.4.20
cpe:2.3:a:cisco:adaptive_security_appliance::::::::	1	OR	9.9	9.9.2.66
cpe:2.3:a:cisco:adaptive_security_appliance::::::::	1	OR	9.10	9.10.1.37
cpe:2.3:a:cisco:adaptive_security_appliance::::::::	1	OR	9.12	9.12.3.2
cpe:2.3:a:cisco:adaptive_security_appliance::::::::	1	OR	9.13	9.13.1.7

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
NONE

Availability Impact
PARTIAL

Base Score
5

Severity
MEDIUM

Exploitability Score
10

Impact Score
2.9

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
CHANGED

Confidentiality Impact
NONE

Availability Impact
HIGH

Base Score
8.6

Base Severity
HIGH

Exploitability Score
3.9

Impact Score
4

References

Reference URL	Reference Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ssl-vpn-dos-qY7BHpjN	Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2020-3196
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3196

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 17:32:26				Added to TrackCVE
2022-12-04 16:11:01	psirt@cisco.com	ykramarz@cisco.com	CVE Assigner	updated
2022-12-04 16:11:01	2020-05-06T17:15Z	2020-05-06T17:15:12	CVE Published Date	updated
2022-12-04 16:11:01		2020-05-13T17:58:14	CVE Modified Date	updated
2022-12-04 16:11:01		Analyzed	Vulnerability Status	updated