After Cisco disclosed a serious vulnerability in its Adaptive Security Appliance and Firepower Threat Defense, one of the security researchers credited with its discovery released proof of concept code for the flaw.

CVE-2020-3452: Cisco Adaptive Security Appliance and Firepower Threat Defense Path Traversal Vulnerability

A vulnerability 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 directory traversal attacks and read sensitive files on a targeted system. The vulnerability is due to a lack of proper input validation of URLs in HTTP requests processed by an affected device. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences to an affected device. A successful exploit could allow the attacker to view arbitrary files within the web services file system on the targeted device. The web services file system is enabled when the affected device is configured with either WebVPN or AnyConnect features. This vulnerability cannot be used to obtain access to ASA or FTD system files or underlying operating system (OS) files.

A vulnerability exists in the web services interface of Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) Software. An unauthenticated, remote attacker can exploit this, by sending a crafted HTTP request containing directory traversal character sequences to an affected device, in order to read sensitive files on the targeted system.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

A vulnerability exists in the web services interface of Cisco Firepower Threat Defense (FTD) Software. An unauthenticated, remote attacker can exploit this, by sending a crafted HTTP request containing directory traversal character sequences to an affected device, in order to read sensitive files on the targeted system.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

A vulnerability exists in the web services interface of Cisco Adaptive Security Appliance (ASA) Software. An unauthenticated, remote attacker can exploit this, by sending a crafted HTTP request containing directory traversal character sequences to an affected device, in order to read sensitive files on the targeted system.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
139064	Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Read-Only Path Traversal (cisco-sa-asaftd-ro-path-KJuQhB86)	Nessus	CISCO	high
138895	Cisco Firepower Threat Defense Software Web Services Read-Only Path Traversal (cisco-sa-asaftd-ro-path-KJuQhB86)	Nessus	CISCO	high
138894	Cisco Adaptive Security Appliance Software Web Services Read-Only Path Traversal (cisco-sa-asaftd-ro-path-KJuQhB86)	Nessus	CISCO	high

Detections

Analytics

CVE-2020-3452

high

Tenable Plugins

high

high

high