CVE-2021-37698: 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, Elastics...

Summary

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 desp...

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software

Vendor	Product	Affected versions
icinga	icinga	>= 2.5.0, < 2.11.10 >= 2.12.0, < 2.12.6 >= 2.13.0, < 2.13.1 `cpe:2.3:a:icinga:icinga::::::::`
debian	debian_linux	9.0 `cpe:2.3:o:debian:debian_linux:9.0:::::::*`

Original advisory text

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, Elastics...

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.

References

https://github.com/Icinga/icinga2/releases/tag/v2.11.11 Release Notes Third Party Advisory
https://github.com/Icinga/icinga2/releases/tag/v2.12.6 Release Notes Third Party Advisory
https://github.com/Icinga/icinga2/releases/tag/v2.13.1 Release Notes Third Party Advisory
https://github.com/Icinga/icinga2/security/advisories/GHSA-cxfm-8j5v-5qr2 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/11/msg00010.html