CVE-2021-37698 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

7.5