GLPI-Agent's MSI package installation permits local users to change Agent configuration

Vulnerability Description

The GLPI Agent is a generic management agent. A vulnerability that only affects GLPI-Agent installed on windows via MSI packaging can allow a local user to cause denial of agent service by replacing GLPI server url with a wrong url or disabling the service. Additionally, in the case the Deploy task is installed, a local malicious user can trigger privilege escalation configuring a malicious server providing its own deploy task payload. GLPI-Agent 1.7.2 contains a patch for this issue. As a workaround, edit GLPI-Agent related key under `HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall` and add `SystemComponent` DWORD value setting it to `1` to hide GLPI-Agent from installed applications.

References

• https://github.com/glpi-project/glpi-agent/security/advisories/GHSA-hx3x-mmqg-h3jp
• https://github.com/glpi-project/glpi-agent/commit/41bbb1169e899bd15350a9e2fdbf9269a3b7a14f