Cisco Adaptive Security Appliance (ASA) Software Improper Input Validation Vulnerability

Summary

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. 

Credit:

The information has been provided by Mikhail Klyuchnikov

The original article can be found at:https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ro-path-KJuQhB86


Details

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.

 

Vulnerable Systems:

Cisco Adaptive Security Appliance (ASA) Software

Cisco Firepower Threat Defense (FTD) Software

 

CVE Information:

CVE-2020-3452

 

Disclosure Timeline:
Published Date:7/22/2020

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