Werk #12707: md check: crashes with IndexError (list index out of range) on invalid input

Component

Checks & agents

Title

md check: crashes with IndexError (list index out of range) on invalid input

Date

Apr 9, 2021

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.1.0b1	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
2.0.0p2	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

Fed with input different from what the md check is made for it tries to access non-existent input elements and crashes with unhandled IndexError exception. This change makes md check for the minimum number of expected elements before accessing them.

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