title: F5 BIG-IP iControl Rest API Command Execution - Webserver
id: 85254a62-22be-4239-b79c-2ec17e566c37
related:
    - id: b59c98c6-95e8-4d65-93ee-f594dfb96b17
      type: similar
status: test
description: Detects POST requests to the F5 BIG-IP iControl Rest API "bash" endpoint, which allows the execution of commands on the BIG-IP
references:
    - https://f5-sdk.readthedocs.io/en/latest/apidoc/f5.bigip.tm.util.html#module-f5.bigip.tm.util.bash
    - https://community.f5.com/t5/technical-forum/icontrolrest-11-5-execute-bash-command/td-p/203029
    - https://community.f5.com/t5/technical-forum/running-bash-commands-via-rest-api/td-p/272516
author: Nasreddine Bencherchali (Nextron Systems), Thurein Oo
date: 2023-11-08
tags:
    - attack.execution
    - attack.t1190
    - attack.initial-access
logsource:
    category: webserver
detection:
    selection:
        cs-method: 'POST'
        cs-uri-query|endswith: '/mgmt/tm/util/bash'
    condition: selection
falsepositives:
    - Legitimate usage of the BIG IP REST API to execute command for administration purposes
level: medium