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CVE-2024-49369

Icinga 2 has a TLS Certificate Validation Bypass for JSON-RPC and HTTP API Connections

Published: Nov 12, 2024Updated: Nov 26, 2025 Sources: CVE List NVD BDUCWE-295
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
2.9%
Top 14.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. The TLS certificate validation in all Icinga 2 versions starting from 2.4.0 was flawed, allowing an attacker to impersonate both trusted cluster nodes as well as any API users that use TLS client certificates for authentication (ApiUser objects with the client_cn attribute set). This vulnerability has been fixed in v2.14.3, v2.13.10, v2.12.11, and v2.11.12.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-295

Affected Products

АЛЬТ СП 10АО «ИВК»
On-premOS
Operating Systems / linux-distro
IcingaIcinga GmbH
Mixed
Enterprise Software / itsm-monitoring
icinga2Icinga
On-prem
Enterprise Software / itsm-monitoring
icingaicinga
On-prem
Enterprise Software / itsm-monitoring
debian linuxdebian
On-premOS
Operating Systems / linux-distro
ао «ивк»commercialRUOperating Systemsaka ivk
icinga gmbhcommercialDEEnterprise Softwareaka icingaweb
icingaoss-projectUSEnterprise Softwareaka icinga web 2, icinga2, icinga
debianoss-projectGBOperating Systemsaka debian gnu/linux

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://asec.ahnlab.com/en/84573/
asec.ahnlab.com
https://github.com/Icinga/icinga2/commit/0419a2c36de408e9a703aec0962061ec9a285d3c
github.com
https://github.com/Icinga/icinga2/commit/2febc5e18ae0c93d989e64ebc2a9fd90e7205ad8
github.com
and 7 more references View all →

Timeline

Published
Nov 12, 2024
Last Updated
Nov 26, 2025

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