Tuned: `script_pre` and `script_post` options allow to pass arbitrary scripts executed by root

A script injection vulnerability was identified in the Tuned package. The `instance_create()` D-Bus function can be called by locally logged-in users without authentication. This flaw allows a local non-privileged user to execute a D-Bus call with `script_pre` or `script_post` options that permit arbitrary scripts with their absolute paths to be passed. These user or attacker-controlled executable scripts or programs could then be executed by Tuned with root privileges that could allow attackers to local privilege escalation.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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tuned 安全漏洞

tuned是tuned开源的一款动态系统调优工具的服务端程序。该程序主要用于监控和收集系统各个组件的数据，并依据数据提供的信息动态调整系统设置。 tuned存在安全漏洞，该漏洞源于本地登录的用户无需身份验证即可调用instance_create函数，导致脚本注入漏洞。

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