Sigma rule: CVE-2023-22518 Exploitation Attempt - Vulnerable Endpoint Connection (Proxy)

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-5e3bc270a576, updated 2023-11-14T00:00:00.000Z.

Rule

Title
CVE-2023-22518 Exploitation Attempt - Vulnerable Endpoint Connection (Proxy)
Status
test
Level
medium
Author
Andreas Braathen (mnemonic.io)
Date
2023-11-14
File
rules-emerging-threats/2023/Exploits/CVE-2023-22518/proxy_exploit_cve_2023_22518_confluence_auth_bypass.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects exploitation attempt of CVE-2023-22518 (Confluence Data Center / Confluence Server), where an attacker can exploit vulnerable endpoints to e.g. create admin accounts and execute arbitrary commands.

Log source

category
proxy

Detection

selection_method:
    cs-method: 'POST'
selection_uris:
    cs-uri|contains:
      # Exploitable endpoints
        - '/json/setup-restore-local.action'
        - '/json/setup-restore-progress.action'
        - '/json/setup-restore.action'
        - '/server-info.action'
        - '/setup/setupadministrator.action'
selection_status:
    # Response code may be indicative of exploitation success, but is not always the case
    sc-status:
        - 200
        - 302
        - 405
condition: all of selection_*

False positives (as the rule lists them)

  • Vulnerability scanners

Tags

  • attack.initial-access
  • attack.t1190
  • cve.2023-22518
  • 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-2023-22518/proxy_exploit_cve_2023_22518_confluence_auth_bypass.yml

Sources and licences

  • SigmaHQ

    "CVE-2023-22518 Exploitation Attempt - Vulnerable Endpoint Connection (Proxy)" by Andreas Braathen (mnemonic.io) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2023/Exploits/CVE-2023-22518/proxy_exploit_cve_2023_22518_confluence_auth_bypass.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-2023-22518 Exploitation Attempt - Vulnerable Endpoint Connection (Proxy)",
entity page, dataset version ref-5e3bc270a576, updated 2023-11-14T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/27d2cdde-9778-490e-91ec-9bd0be6e8cc6 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 27d2cdde-9778-490e-91ec-9bd0be6e8cc6, 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.