Improper Following of a Certificate's Chain of Trust Affecting icinga/icinga2 package, versions [, 2.12.12)[2.13.0, 2.13.12)[2.14.0, 2.14.6)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-ICINGAICINGA2-10645527
- published7 Jul 2025
- disclosed27 May 2025
- creditUnknown
Introduced: 27 May 2025
CVE-2025-48057 (opens in a new tab)How to fix?
Upgrade icinga/icinga2 to version 2.12.12, 2.13.12, 2.14.6 or higher.
Overview
Affected versions of this package are vulnerable to Improper Following of a Certificate's Chain of Trust via the VerifyCertificate function. An attacker can send a malicious certificate request that is then treated as a renewal of an already existing certificate, resulting in the attacker obtaining a valid certificate that can be used to impersonate trusted nodes.
Note: This is only applicable if Icinga 2 is built with OpenSSL older than version 1.1.0, which can be checked by running icinga2 --version | grep OpenSSL; Additionally, a direct TLS connection to a master capable of signing certificates is required. On other nodes, it only results in an incorrect "Received certificate request for CN '[...]' signed by our CA."