[2.4.0] Checkmk Werk 16249 created: mk_informix: Follow up for Werk 16198

[//]: # (werk v2) # mk_informix: Follow up for Werk 16198 key | value ---------- | --- date | 2024-07-26T07:18:38+00:00 version | 2.4.0b1 class | security edition | cre component | checks level | 1 compatible | yes [Werk #16198](https://checkmk.com/werk/16198) addressed potential priviledge escalation by the agent plugin `mk_informix`. However, a few callsites to the binaries `dbaccess` and `onstat` where missing the safe execution. Those binaries are now also called in a safe way. <em>Vulnerability Management</em>: We have rated the issue with a CVSS Score of 5.2 (Medium) with the following CVSS vector: <code>CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:H/SI:H/SA:H</code> and assigned CVE <code>CVE-2024-28829</code>.