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Werk #17028: Fix Livestatus injection via REST-API

Component REST API
Title Fix Livestatus injection via REST-API
Date Jan 13, 2025
Level Trivial Change
Class Security Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.5.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.4.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.3.0p25 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.2.0p39 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

Prior to this fix, a REST API endpoint improperly handled escaping of data received through POST requests. This vulnerability allowed users with the update_and_acknowledge permission for events to inject arbitrary Livestatus commands via the affected endpoint.

Affected Versions:

  • 2.4.0 (beta)
  • 2.3.0
  • 2.2.0
  • 2.1.0 (EOL)

Vulnerability Management:

We have rated the issue with a CVSS score of 6.0 (Medium) with the following CVSS vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N, and assigned CVE-2024-38865.

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