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DETECTION OVERVIEW

F5 BIG-IP Exploit - CVE-2020-5902

Risk Factors

Unpatched BIG-IP Application Delivery Controllers (ADCs) with web interfaces can be easily accessed by an attacker, especially if the web interface is internet-facing. Attack tools such as Metasploit and publicly-available exploits can help an unauthenticated attacker achieve their objective. A successful exploit can compromise the ADC and enable the attacker to intercept traffic or move laterally across the network.

Category

Exploitation
Detection diagram
Next in Exploitation: F5 BIG-IP Exploit - CVE-2021-22991

Attack Background

The BIG-IP ADC is a gateway device that directs traffic across a network. The configuration utility (Traffic Management User Interface or TMUI) has a known vulnerability, which enables unauthenticated attackers with network access to run arbitrary code on the TMUI server. The TMUI can be exposed to an attacker through the BIG-IP Management port or a Self IP address. Malicious code is delivered to the TMUI through an HTTP request that bypasses authentication checks and then runs a command or uploads a malicious payload. The attacker can then gain access to the BIG-IP ADC to manipulate traffic, access files, or upload malicious files to the ADC.

Mitigation Options

Install relevant patches for affected versions

Block external access to the TMUI utility with source IP filtering

MITRE ATT&CK ID

Associated content

Announcing The Forrester Wave™: Network Analysis And Visibility Solutions, Q4 2025

Network analysis and visibility solutions remain underrepresented in enterprises. Find out why in this preview of a new Wave report.

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ExtraHop® Named a Leader in First-Ever Gartner® Magic Quadrant™ for Network Detection and Response — ExtraHop

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Docs

The 2025 ExtraHop Global Threat Landscape Report: The Alarming Reality of Threat Actor Dwell Time and Deeper Network Access — ExtraHop

This analysis exposes the critical link between an organization's lack of internal visibility and the escalating cost of compromise, demanding an urgent re-evaluation of how core business assets are protected.

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ExtraHop RevealX MITRE ATT&CK Coverage 2024 — ExtraHop

Learn why you need to be wary of the claims certain network detection and response providers make about their coverage against the MITRE ATT&CK framework.

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MITRE ATT&CK - Network Detection & Response with RevealX — ExtraHop

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