CVE-2018-6536

NameCVE-2018-6536
DescriptionAn 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.
SourceCVE (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 PackageReleaseVersionStatus
icinga2 (PTS)buster2.10.3-2+deb10u1fixed
bullseye2.12.3-1fixed
bookworm2.13.6-2fixed
trixie, sid2.14.2-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
icinga2source(unstable)2.8.4-1

Notes

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

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