Vulnerability in Icinga

CVE-2024-49369

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.

Vulnerability class: Improper Certificate Validation

EPSS: 0.029 (86.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-49369?
CVE-2024-49369 is a critical-severity vulnerability in Icinga, classified under Improper Certificate Validation. CVSS score: 9.8/10. Published 2024-11-12.
How severe is CVE-2024-49369?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2024-49369 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.