Icinga 2 is an open source monitoring system. From 2.8 until 2.14.9, 2.15.4, and 2.16.2, certificate update JSON-RPC message handling does not validate that the sender is a trusted endpoint. An unauthenticated network attacker able to connect to TCP port 5665 can replace the node certificate and trusted CA certificate, impersonate a trusted node, and take control of the node.
This issue is fixed in versions 2.14.9, 2.15.4, and 2.16.2.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 10
https://github.com/Icinga/icinga2/commit/4b7fb3405f4616a24b2b55e20f603a56b7dd6a…
security-advisories@github.com
https://github.com/Icinga/icinga2/commit/6c2e0db3819f859910a4ae265461cb51b1d203…
security-advisories@github.com
https://github.com/Icinga/icinga2/commit/a6f7cc7a4ef8beed023b24416106822d6940c4…
security-advisories@github.com
https://github.com/Icinga/icinga2/commit/d37b0cfd7d9595ae2f02fadb3d724c98d8620f…
security-advisories@github.com
https://github.com/Icinga/icinga2/pull/10907
security-advisories@github.com
https://github.com/Icinga/icinga2/releases/tag/v2.14.9
security-advisories@github.com
https://github.com/Icinga/icinga2/releases/tag/v2.15.4
security-advisories@github.com
https://github.com/Icinga/icinga2/releases/tag/v2.16.2
security-advisories@github.com
https://github.com/Icinga/icinga2/security/advisories/GHSA-vj39-ww8j-vvx5
security-advisories@github.com
https://icinga.com/blog/icinga2-security-release-v2-16-2
security-advisories@github.com