Sigma rule: CVE-2020-5902 F5 BIG-IP Exploitation Attempt
A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-9f5d8f712aec, updated 2023-01-02T00:00:00.000Z.
Rule
- Title
- CVE-2020-5902 F5 BIG-IP Exploitation Attempt
- Status
- test
- Level
- critical
- Author
- Florian Roth (Nextron Systems)
- Date
- 2020-07-05
- Modified
- 2023-01-02
- File
- rules-emerging-threats/2020/Exploits/CVE-2020-5902/web_cve_2020_5902_f5_bigip.yml
- Commit
- ccbb0369507f796db0b0ae6854c8a2be471b9d84
Detects the exploitation attempt of the vulnerability found in F5 BIG-IP and described in CVE-2020-5902
Log source
- category
- webserver
Detection
selection_base:
cs-uri-query|contains:
- '/tmui/'
- '/hsqldb'
selection_traversal:
cs-uri-query|contains:
- '..;/'
- '.jsp/..'
condition: selection_base and selection_traversalFalse positives (as the rule lists them)
- Unknown
Tags
- attack.initial-access
- attack.t1190
- cve.2020-5902
- detection.emerging-threats
CVEs this rule names
MITRE ATT&CK ids this rule names
References
- https://support.f5.com/csp/article/K52145254
- https://www.ptsecurity.com/ww-en/about/news/f5-fixes-critical-vulnerability-discovered-by-positive-technologies-in-big-ip-application-delivery-controller/
- https://twitter.com/yorickkoster/status/1279709009151434754
- https://www.criticalstart.com/f5-big-ip-remote-code-execution-exploit/
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/2020/Exploits/CVE-2020-5902/web_cve_2020_5902_f5_bigip.yml
Sources and licences
SigmaHQ
"CVE-2020-5902 F5 BIG-IP Exploitation Attempt" by Florian Roth (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2020/Exploits/CVE-2020-5902/web_cve_2020_5902_f5_bigip.yml.
Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License
Cite this page
Dragons Eye Ransomware Tracker, "Sigma rule: CVE-2020-5902 F5 BIG-IP Exploitation Attempt",
entity page, dataset version ref-9f5d8f712aec, updated 2023-01-02T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/44b53b1c-e60f-4a7b-948e-3435a7918478 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 44b53b1c-e60f-4a7b-948e-3435a7918478, 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.