Vulnerability Details 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, 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 37.6%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- 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://github.com/Icinga/icinga2/security/advisories/GHSA-cxfm-8j5v-5qr2
- https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html
- 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://github.com/Icinga/icinga2/security/advisories/GHSA-cxfm-8j5v-5qr2
- https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html
Products affected by CVE-2021-37698
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cpe:2.3:a:icinga:icinga:2.10.0
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cpe:2.3:a:icinga:icinga:2.10.1
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cpe:2.3:a:icinga:icinga:2.10.2
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cpe:2.3:a:icinga:icinga:2.10.3
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cpe:2.3:a:icinga:icinga:2.10.4
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cpe:2.3:a:icinga:icinga:2.10.5
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cpe:2.3:a:icinga:icinga:2.10.6
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cpe:2.3:a:icinga:icinga:2.10.7
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cpe:2.3:a:icinga:icinga:2.11.0
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cpe:2.3:a:icinga:icinga:2.11.1
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cpe:2.3:a:icinga:icinga:2.11.2
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cpe:2.3:a:icinga:icinga:2.11.3
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cpe:2.3:a:icinga:icinga:2.11.4
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cpe:2.3:a:icinga:icinga:2.11.5
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cpe:2.3:a:icinga:icinga:2.11.6
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cpe:2.3:a:icinga:icinga:2.11.7
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cpe:2.3:a:icinga:icinga:2.11.8
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cpe:2.3:a:icinga:icinga:2.11.9
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cpe:2.3:a:icinga:icinga:2.12.0
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cpe:2.3:a:icinga:icinga:2.12.1
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cpe:2.3:a:icinga:icinga:2.12.2
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cpe:2.3:a:icinga:icinga:2.12.3
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cpe:2.3:a:icinga:icinga:2.12.4
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cpe:2.3:a:icinga:icinga:2.12.5
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cpe:2.3:a:icinga:icinga:2.13.0
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cpe:2.3:a:icinga:icinga:2.5.0
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cpe:2.3:a:icinga:icinga:2.5.1
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cpe:2.3:a:icinga:icinga:2.5.2
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cpe:2.3:a:icinga:icinga:2.5.3
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cpe:2.3:a:icinga:icinga:2.5.4
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cpe:2.3:a:icinga:icinga:2.6.0
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cpe:2.3:a:icinga:icinga:2.6.1
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cpe:2.3:a:icinga:icinga:2.6.2
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cpe:2.3:a:icinga:icinga:2.6.3
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cpe:2.3:a:icinga:icinga:2.7.0
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cpe:2.3:a:icinga:icinga:2.7.1
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cpe:2.3:a:icinga:icinga:2.7.2
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cpe:2.3:a:icinga:icinga:2.7.3
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cpe:2.3:a:icinga:icinga:2.7.4
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cpe:2.3:a:icinga:icinga:2.7.5
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cpe:2.3:a:icinga:icinga:2.8.0
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cpe:2.3:a:icinga:icinga:2.8.1
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cpe:2.3:a:icinga:icinga:2.8.2
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cpe:2.3:a:icinga:icinga:2.8.3
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cpe:2.3:a:icinga:icinga:2.8.4
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cpe:2.3:a:icinga:icinga:2.9.0
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cpe:2.3:a:icinga:icinga:2.9.1
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cpe:2.3:a:icinga:icinga:2.9.2
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cpe:2.3:a:icinga:icinga:2.9.3
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cpe:2.3:o:debian:debian_linux:9.0