Sigma rule: CVE-2023-46747 Exploitation Activity - Webserver

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-7049e569d413, updated 2023-11-08T00:00:00.000Z.

Rule

Title
CVE-2023-46747 Exploitation Activity - Webserver
Status
test
Level
high
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2023-11-08
File
rules-emerging-threats/2023/Exploits/CVE-2023-46747/web_cve_2023_46747_f5_remote_code_execution.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects exploitation activity of CVE-2023-46747 an unauthenticated remote code execution vulnerability in F5 BIG-IP.

Log source

category
webserver
definition
Requirements: The POST request body data must be collected in order to make use of this detection

Detection

selection:
    cs-method: 'POST'
    cs-uri-stem|contains: '/mgmt/tm/util/bash'
keywords_hex:
    '|all':
        - '2f746d75692f436f6e74726f6c2f666f726d' # /tmui/Control/form
        - '666f726d5f706167653d253266746d756925326673797374656d253266757365722532666372656174652e6a7370' # form_page=%2ftmui%2fsystem%2fuser%2fcreate.jsp
keywords_plain:
    '|all':
        - '/tmui/Control/form'
        - 'form_page=%2ftmui%2fsystem%2fuser%2fcreate.jsp'
condition: selection and (keywords_hex or keywords_plain)

False positives (as the rule lists them)

  • Unlikely

Tags

  • attack.initial-access
  • attack.t1190
  • cve.2023-46747
  • detection.emerging-threats

CVEs this rule names

MITRE ATT&CK ids this rule names

Related rules

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/Exploits/CVE-2023-46747/web_cve_2023_46747_f5_remote_code_execution.yml

Sources and licences

  • SigmaHQ

    "CVE-2023-46747 Exploitation Activity - Webserver" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/Exploits/CVE-2023-46747/web_cve_2023_46747_f5_remote_code_execution.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: CVE-2023-46747 Exploitation Activity - Webserver",
entity page, dataset version ref-7049e569d413, updated 2023-11-08T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/e9928831-ba14-42ea-a4bc-33d352b9929a (accessed 2026-11-03).
Underlying source: SigmaHQ rule e9928831-ba14-42ea-a4bc-33d352b9929a, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.