Emerging Threathightest
CVE-2023-46747 Exploitation Activity - Webserver
Detects exploitation activity of CVE-2023-46747 an unauthenticated remote code execution vulnerability in F5 BIG-IP.
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Launch
Emerging Threat
Active Threat
Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.
Log Source
Web Server Log
CategoryWeb Server Log← raw: webserver
HTTP access logs from web servers capturing request paths, methods, and status codes.
Definition
Requirements: The POST request body data must be collected in order to make use of this detection
Detection Logic
Detection Logic3 selectors
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
Unlikely
False positives are unlikely for most environments. High confidence detection.
MITRE ATT&CK
Tactics
Other
cve.2023-46747detection.emerging-threats
Rule Metadata
Rule ID
e9928831-ba14-42ea-a4bc-33d352b9929a
Status
test
Level
high
Type
Emerging Threat
Created
Wed Nov 08
Path
rules-emerging-threats/2023/Exploits/CVE-2023-46747/web_cve_2023_46747_f5_remote_code_execution.yml
Raw Tags
attack.initial-accessattack.t1190cve.2023-46747detection.emerging-threats