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CVE-2024-49369

Icinga 2 has a TLS Certificate Validation Bypass for JSON-RPC and HTTP API Connections

CVSS 9.8 CRITICALEPSS 2.9%CWE-295
Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. The TLS certificate validation in all Icinga 2 versions starting from 2.4.0 was flawed, allowing an attacker to impersonate both trusted cluster nodes as well as any API users that use TLS client certificates for authentication (ApiUser objects with the client_cn attribute set). This vulnerability has been fixed in v2.14.3, v2.13.10, v2.12.11, and v2.11.12.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Icinga · icinga2
public PoCs found — 1
githubgithub.com/Quantum-Sicarius/CVE-2024-49369★ 2
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References
https://github.com/Icinga/icinga2/commit/0419a2c36de408e9a703aec0962061ec9a285d3chttps://github.com/Icinga/icinga2/commit/2febc5e18ae0c93d989e64ebc2a9fd90e7205ad8https://github.com/Icinga/icinga2/commit/3504fc7ed688c10d86988e2029a65efc311393fehttps://github.com/Icinga/icinga2/commit/869a7d6f0fe38c748e67bacc1fbdd42c933030f6https://github.com/Icinga/icinga2/commit/8fed6608912c752b337d977f730547875a820831https://github.com/Icinga/icinga2/security/advisories/GHSA-j7wq-r9mg-9wpvhttps://icinga.com/blog/2024/11/12/critical-icinga-2-security-releases-2-14-3https://lists.debian.org/debian-lts-announce/2024/11/msg00010.html