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CVE-2021-37698

CVE-2021-37698 · Missing TLS service certificate validation in GelfWriter, ElasticsearchWriter, InfluxdbWriter and Influxdb2Writer

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 7.5 · High · EPSS 1.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • icinga2

    Versions
    • >= 2.5.0, <= 2.13.0: Affected

    No fix published

  • icinga2 Debian:12

    Affected ranges
    • ECOSYSTEM: < 2.13.1-1

    Update to 2.13.1-1

  • icinga2 Debian:13

    Affected ranges
    • ECOSYSTEM: < 2.13.1-1

    Update to 2.13.1-1

  • icinga2 Debian:14

    Affected ranges
    • ECOSYSTEM: < 2.13.1-1

    Update to 2.13.1-1

  • icinga2 Ubuntu:16.04:LTS

    Versions
    • 2.3.8-1build1
    • 2.3.11-1
    • 2.4.0-1
    • 2.4.1-1
    • 2.4.1-2
    • 2.4.1-2ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • icinga2 Ubuntu:18.04:LTS

    Versions
    • 2.7.0-1
    • 2.8.1-0ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • icinga2 Ubuntu:20.04:LTS

    Versions
    • 2.10.5-1build1
    • 2.11.2-1
    • 2.11.2-1ubuntu1
    • 2.11.2-1ubuntu2
    • 2.11.2-1ubuntu3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • icinga2 Ubuntu:22.04:LTS

    Versions
    • 2.12.3-1
    • 2.13.1-1
    • 2.13.2-1
    • 2.13.2-1build1
    • 2.13.2-1build2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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