CVE-2021-32743 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 prior to 2.11.10 and from version 2.12.0 through version 2.12.4 some of the Icinga 2 features that require credentials for external services expose those credentials through the API to authenticated API users with read permissions for the corresponding object types. IdoMysqlConnection and IdoPgsqlConnection (every released version) exposes the password of the user used to connect to the database. IcingaDB (added in 2.12.0) exposes the password used to connect to the Redis server. ElasticsearchWriter (added in 2.8.0)exposes the password used to connect to the Elasticsearch server. An attacker who obtains these credentials can impersonate Icinga to these services and add modify and delete information there. If credentials with more permissions are in use this increases the impact accordingly. Starting with the 2.11.10 and 2.12.5 releases these passwords are no longer exposed via the API. As a workaround API user permissions can be restricted to not allow querying of any affected objects either by explicitly listing only the required object types for object query permissions or by applying a filter rule.

CVSS Vector

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

Reference

https://icinga.com/blog/2021/07/15/releasing-icinga-2-12-5-and-2-11-10/ https://github.com/Icinga/icinga2/security/advisories/GHSA-wrpw-pmr8-qgj7 https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8