CVE-2021-37698

NameCVE-2021-37698
DescriptionIcinga 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
icinga2 (PTS)stretch2.6.0-2+deb9u1vulnerable
buster2.10.3-2+deb10u1vulnerable
bullseye2.12.3-1vulnerable
bookworm, sid2.13.1-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
icinga2source(unstable)2.13.1-1

Notes

https://github.com/Icinga/icinga2/security/advisories/GHSA-cxfm-8j5v-5qr2
https://icinga.com/blog/2021/08/19/icinga-2-13-1-security-release/

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