cve/2020/CVE-2020-14004.md

CVE-2020-14004

Description

An issue was discovered in Icinga2 before v2.12.0-rc1. The prepare-dirs script (run as part of the icinga2 systemd service) executes chmod 2750 /run/icinga2/cmd. /run/icinga2 is under control of an unprivileged user by default. If /run/icinga2/cmd is a symlink, then it will by followed and arbitrary files can be changed to mode 2750 by the unprivileged icinga2 user.

POC

Reference

• http://www.openwall.com/lists/oss-security/2020/06/12/1
• http://www.openwall.com/lists/oss-security/2020/06/12/1

Github

• https://github.com/Live-Hack-CVE/CVE-2020-14004