ESB-2018.1816 - [Cisco] Cisco Firepower 4100 Series and Firepower 9300: Modify arbitrary files - Existing account 2018-06-21

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.1816
  Cisco Firepower 4100 Series Next-Generation Firewall and Firepower 9300
              Security Appliance Path Traversal Vulnerability
                               21 June 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Cisco Firepower 4100 Series
                   Cisco Firepower 9300
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Modify Arbitrary Files -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-0300  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-firepwr-pt

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Cisco Security Advisory: Cisco Firepower 4100 Series Next-Generation Firewall
and Firepower 9300 Security Appliance Path Traversal Vulnerability

Advisory ID: cisco-sa-20180620-firepwr-pt

Revision: 1.0

For Public Release: 2018 June 20 16:00 GMT

Last Updated: 2018 June 20 16:00 GMT

CVE ID(s): CVE-2018-0300

CVSS Score v(3): 7.2 CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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Summary

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A vulnerability in the process of uploading new application images to the 
Cisco Firepower 4100 Series Next-Generation Firewall (NGFW) and Firepower 9300
Security Appliance could allow an authenticated, remote attacker using path 
traversal techniques to create or overwrite arbitrary files on an affected 
device.

The vulnerability is due to insufficient validation during the application 
image upload process. An attacker could exploit this vulnerability by creating
an application image containing malicious code and installing the image on the
affected device using the CLI or web-based user interface (web UI). These 
actions occur prior to signature verification and could allow the attacker to
create and execute arbitrary code with root privileges.

Note: A missing or invalid signature in the application image will cause the 
upload process to fail, but does not prevent the exploit.

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-20180620-firepwr-pt

This advisory is part of the June 2018 Cisco FXOS and NX-OS Software Security
Advisory Collection, which includes 24 Cisco Security Advisories that describe
24 vulnerabilities. For a complete list of the advisories and links to them, 
see Cisco Event Response: June 2018 Cisco FXOS and NX-OS Software Security

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