Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. From version 2.4.0 through version 2.12.4, a vulnerability exists that may allow privilege escalation for authenticated API users. With a read-ony user's credentials, an attacker can view most attributes of all config objects including `ticket_salt` of `ApiListener`. This salt is enough to compute a ticket for every possible common name (CN). A ticket, the master node's certificate, and a self-signed certificate are enough to successfully request the desired certificate from Icinga. That certificate may in turn be used to steal an endpoint or API user's identity. Versions 2.12.5 and 2.11.10 both contain a fix the vulnerability. As a workaround, one may either specify queryable types explicitly or filter out ApiListener objects.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HDebian
OSDebian9.0Icinga
APPIcinga2.4.0 – 2.11.10 (bez)2.12.0 – 2.12.5 (bez)
Related vulnerabilities
GNU Inetutils telnetd: ominięcie uwierzytelnienia przez zmienną USER
Sudo: eskalacja uprawnień do root poprzez opcję --chroot (CVE-2025-32463)
RCE przez deserializację PHP w Roundcube Webmail (parametr _from)
Erlang/OTP SSH — nieuwierzytelniony RCE (CVSS 10.0)
Apple WebKit: out-of-bounds write umożliwiający ucieczkę z sandbox przeglądarki