CVE-2018-6536

Name	CVE-2018-6536
Description	An issue was discovered in Icinga 2.x through 2.8.1. The daemon creates an icinga2.pid file after dropping privileges to a non-root account, which might allow local users to kill arbitrary processes by leveraging access to this non-root account for icinga2.pid modification before a root script executes a "kill `cat /pathname/icinga2.pid`" command, as demonstrated by icinga2.init.d.cmake.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
icinga2 (PTS)	jessie	2.1.1-1	vulnerable
	stretch (security), stretch (lts), stretch	2.6.0-2+deb9u2	vulnerable
	buster	2.10.3-2+deb10u1	fixed
	bullseye	2.12.3-1	fixed
	bullseye (security)	2.12.3-1+deb11u1	fixed
	bookworm	2.13.6-2+deb12u1	fixed
	sid, trixie	2.14.3-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
icinga2	source	(unstable)	2.8.4-1

[stretch] - icinga2 <no-dsa> (Minor issue)
[jessie] - icinga2 <no-dsa> (Minor issue)
https://github.com/Icinga/icinga2/issues/5991