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CVE-2021-37698

7.5 · HIGH

Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting.

Published Aug 19, 2021CWE-295EPSS 1.38%

Overview

CVE-2021-37698 is a high-severity vulnerability. It was published on August 19, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/Icinga/icinga2/releases/tag/v2.11.11GitHubgithub.com/Icinga/icinga2/releases/tag/v2.12.6GitHubgithub.com/Icinga/icinga2/releases/tag/v2.13.1GitHubgithub.com/Icinga/icinga2/security/advisories/GHSA-cxfm-8j5v-5qr2Reflists.debian.org/debian-lts-announce/2021/11/msg00010.htmlGitHubgithub.com/Icinga/icinga2/releases/tag/v2.11.11GitHubgithub.com/Icinga/icinga2/releases/tag/v2.12.6GitHubgithub.com/Icinga/icinga2/releases/tag/v2.13.1GitHubgithub.com/Icinga/icinga2/security/advisories/GHSA-cxfm-8j5v-5qr2Reflists.debian.org/debian-lts-announce/2021/11/msg00010.html

How CyberStrike helps

Frequently asked questions

What is CVE-2021-37698?

CVE-2021-37698 is a high-severity vulnerability. It was published on August 19, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2021-37698?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-37698?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-37698?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-37698 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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