Nagios Core before 4.3.3 creates a nagios.lock 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 nagios.lock modification before a root script executes a "kill cat /pathname/nagios.lock" command.
[
    {
        "id": "CVE-2017-12847-1c71215f",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "18166993775096451283999305342393905517",
                "323285575529554466441180117519626675682",
                "302534000399466920953880950409099860418",
                "224454027163474106003223621063889339353",
                "136183904707565155328563958712168354046",
                "265106673575102192321822654067499560795",
                "169704132406692230459444399014392071239",
                "99320945942352524122598772702530167798",
                "222776566464554068020891999008718271011",
                "184054446001580763048825606566453869192",
                "278528254558251760976394294382491493241",
                "188647213713844536507083633210708505557",
                "222291352107249277855673226898122059471",
                "99719521977677722006786535212271976493",
                "37644059831282870098599897202419719148",
                "334925305892522566529414181630766856783"
            ],
            "threshold": 0.9
        },
        "target": {
            "file": "base/nagios.c"
        },
        "source": "https://github.com/nagiosenterprises/nagioscore/commit/1b197346d490df2e2d3b1dcce5ac6134ad0c8752"
    },
    {
        "id": "CVE-2017-12847-ff6f8b6d",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "function_hash": "163218892130331372729747023081253370699",
            "length": 15757.0
        },
        "target": {
            "file": "base/nagios.c",
            "function": "main"
        },
        "source": "https://github.com/nagiosenterprises/nagioscore/commit/1b197346d490df2e2d3b1dcce5ac6134ad0c8752"
    }
]