CVE-2020-3580: Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Interface Cross-Site Scripting Vulnerabilities
Multiple vulnerabilities in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the web services interface of an affected device. The vulnerabilities are due to insufficient validation of user-supplied input by the web services interface of an affected device. An attacker could exploit these vulnerabilities by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or allow the attacker to access sensitive, browser-based information. Note: These vulnerabilities affect only specific AnyConnect and WebVPN configurations. For more information, see the Vulnerable Products section.
Other sources
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an insufficient input validation vulnerability for user-supplied input by the web services interface. Successful exploitation could allow an attacker to perform cross-site scripting (XSS) in the context of the interface or access sensitive browser-based information.
— CISA
Affected Software
Event History
Frequently Asked Questions
What is CVE-2020-3580?
CVE-2020-3580 is a vulnerability in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software that allows an unauthenticated attacker to conduct cross-site scripting (XSS) attacks.
What is the severity of CVE-2020-3580?
The severity of CVE-2020-3580 is medium with a CVSS score of 6.1.
What software is affected by CVE-2020-3580?
Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software versions 6.3.0.6 to 6.6.1, and 9.7 to 9.14.1.30 are affected by CVE-2020-3580.
How can an attacker exploit CVE-2020-3580?
An attacker can exploit CVE-2020-3580 by enticing a user to click on a specially crafted link or visit a web page containing malicious content.
Is there a fix available for CVE-2020-3580?
Yes, Cisco has released software updates to address CVE-2020-3580. It is recommended to update to the fixed software versions.