CVE-2021-37698 | BDVDB-2026-159176 Detail
Icingaicinga2
Description#
Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. In versions 2.5.0 through 2.13.0, ElasticsearchWriter, GelfWriter, InfluxdbWriter and Influxdb2Writer do not verify the server's certificate despite a certificate authority being specified. Icinga 2 instances which connect to any of the mentioned time series databases (TSDBs) using TLS over a spoofable infrastructure should immediately upgrade to version 2.13.1, 2.12.6, or 2.11.11 to patch the issue. Such instances should also change the credentials (if any) used by the TSDB writer feature to authenticate against the TSDB. There are no workarounds aside from upgrading.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact none, availability impact none. Attack vector: network.
Weaknesses#
- CWE-295 Improper Certificate Validation
References#
- https://github.com/Icinga/icinga2/security/advisories/GHSA-cxfm-8j5v-5qr2
- https://github.com/Icinga/icinga2/releases/tag/v2.11.11
- https://github.com/Icinga/icinga2/releases/tag/v2.12.6
- https://github.com/Icinga/icinga2/releases/tag/v2.13.1
- https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html
- https://lists.debian.org/debian-lts-announce/2024/11/msg00010.html
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.