CVE-2018-6536 Race condition in n/a
Local attackers can exploit a race condition in Icinga 2 to kill arbitrary processes or escalate privileges by modifying the PID file before root scripts execute.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-6536?
CVE-2018-6536 is a medium-severity vulnerability in n/a, published on 2 Feb 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-732
Which versions are affected by CVE-2018-6536?
It affects 1 product.
Products include Icinga Icinga.
How do I fix CVE-2018-6536?
Apply the vendor's patch.
Is CVE-2018-6536 being exploited?
There is no known exploitation of CVE-2018-6536 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2025-48057 Icinga 2 certificate renewal might incorrectly renew an invalid certificate
- CVE-2020-29663 Security feature bypass in n/a
- CVE-2024-24820 Icinga Director configuration is susceptible to Cross-Site Request Forgery
- CVE-2018-6535 Information disclosure in n/a
- CVE-2020-14004 Path traversal in n/a
Sources
Also known as DEBIAN-CVE-2018-6536, GHSA-653v-x44f-wmwh, UBUNTU-CVE-2018-6536.