Secunia Security Advisory – Gentoo has issued an update for nagios-core. This fixes multiple vulnerabilities, where one has an unknown impact and others can be exploited by malicious users to bypass certain security restrictions and potentially compromise a vulnerable system or by malicious people to conduct cross-site request forgery attacks.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/79446/sa35763.txt
Source: https://packetstormsecurity.com/files/79446/Secunia-Security-Advisory-35763.html

