Werk #6622: Fixed possible open redirect on login page

Component User interface
Title Fixed possible open redirect on login page
Date Sep 17, 2018
Checkmk Edition Checkmk Raw (CRE)
Checkmk Version 1.4.0p36 1.5.0p5 1.6.0b1
Level Trivial Change
Class Security Fix
Compatibility Compatible - no manual interaction needed

It was possible to redirect an user to external websites through manipulating GET parameters. To exploit this vulnerability, an attacker needs to trick a user into following a crafted URL. The attack only works if the user does not notice that he is redirected to a different URL.

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