A Vulnerability in F5 BIG-IP Traffic Management User Interface Could Allow for Remote Code Execution

ITS Advisory Number: 
2020-089 - UPDATED
Date(s) Issued: 
Monday, July 6, 2020
Date Updated: 
Monday, July 6, 2020
Subject: 
A Vulnerability in F5 BIG-IP Traffic Management User Interface Could Allow for Remote Code Execution
Overview: 

A vulnerability has been discovered in F5 BIG-IP Traffic Management User Interface (TMUI), which could allow for remote code execution. F5's BIG-IP is a family of products covering software and hardware designed around application availability, access control, and security solutions. Successful exploitation of this vulnerability allows for unauthenticated attackers, or authenticated users, with network access to the TMUI, through the BIG-IP management port and/or Self IPs, to execute remote system commands, create or delete files, disable services, and/or execute remote Java code. This vulnerability may result in complete system compromise.

 

ORIGINAL THREAT INTELLIGENCE:

There are currently no reports of these vulnerabilities being exploited in the wild.

 

July 6 - UPDATED THREAT INTELLIGENCE:

This vulnerability has been reported being actively exploited in the wild and a PoC scanner is available on Github.

Systems Affected: 
  • F5 BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, FPS, GTM, Link Controller, PEM) 15.x versions prior to 15.1.0.4

  • F5 BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, FPS, GTM, Link Controller, PEM) 14.x versions prior to 14.1.2.6

  • F5 BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, FPS, GTM, Link Controller, PEM) 13.x versions prior to 13.1.3.4

  • F5 BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, FPS, GTM, Link Controller, PEM) 12.x versions prior to 12.1.5.2

  • F5 BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, FPS, GTM, Link Controller, PEM) 11.x versions prior to 11.6.5.2

RISK
GOVERNMENT
Large and medium government entities: 
High
Small government entities: 
High
BUSINESS
Large and medium business entities: 
High
Small business entities: 
High
Home Users: 
Low
Description: 

A vulnerability has been discovered in F5 BIG-IP Traffic Management User Interface (TMUI), which could allow for remote code execution. This vulnerability can be exploited by sending a crafted HTTP request to the server hosting the Traffic Management User Interface (TMUI) utility for BIG-IP configuration. This vulnerability exists in undisclosed pages of the Traffic Management User Interface. (CVE-2020-5902).

 

Successful exploitation of this vulnerability allows for unauthenticated attackers, or authenticated users, with network access to the TMUI, through the BIG-IP management port and/or Self IPs, to execute remote system commands, create or delete files, disable services, and/or execute remote Java code. This vulnerability may result in complete system compromise.

Actions: 
  • After appropriate testing, immediately apply the patches or mitigations provided by F5 to vulnerable systems. 

  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.

  • Remind users not to visit websites or follow links provided by unknown or untrusted sources.

  • Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from un-trusted sources.

  • Apply the Principle of Least Privilege to all systems and services.