Werk #940: Fixed various core SIGSEGV when using malformed livestatus queries

Component	Core & setup
Title	Fixed various core SIGSEGV when using malformed livestatus queries
Date	Jun 18, 2014
Level	Prominent Change
Class	Security Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.2.5i4 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.5i4 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.5i4 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.5i4 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.5i4 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.5i4 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.5i4 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.5i4 Not yet released Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.5i4 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

Some malformed livestatus queries could crash the monitoring core. This happened whenever the value field for certain keys was missing.

For example

lq "GET hosts\nColumnHeaders:\n"

lq "GET hosts\nAnd:\n"

lq "GET hosts\nKeepalive:\n

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