Cisco Adaptive Security Appliance (ASA) and Cisco Firepower Threat Defense (FTD) Software SSL VPN (WebVPN) Improper Neutralization of Input During Web Page Generation (‘Cross-site Scripting’) Vulnerability
A vulnerability in the Clientless SSL VPN (WebVPN) portal of Cisco Adaptive Security Appliance (ASA) and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device.
The information has been provided by Qingtang Zheng.
The original article can be found at: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191002-asa-xss
The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected device. An attacker could exploit this vulnerability 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.
Cisco ASA Software or FTD Software when configured for WebVPN.