Cisco Security Advisory - Cisco Firepower Threat Defense Software Command File Overwrite Vulnerability

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Cisco Firepower Threat Defense Software Command File Overwrite Vulnerability

A vulnerability in the CLI of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to overwrite files on the file system of an affected device by using directory traversal techniques. A successful exploit could cause system instability if important system files are overwritten. 

This vulnerability is due to insufficient validation of user input for the file path in a specific CLI command. An attacker could exploit this vulnerability by logging in to a targeted device and issuing a specific CLI command with crafted user input. A successful exploit could allow the attacker to overwrite arbitrary files on the file system of the affected device. The attacker would need valid user credentials on the device.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-overwrite-XknRjGdB

     
         
Security Impact Rating:  Medium
   
   
       
CVE: CVE-2021-1256
Source: Cisco Firepower Threat Defense Software Command File Overwrite Vulnerability