Networkmanager-libreswan: local privilege escalation via leftupdown

A flaw was found in the libreswan client plugin for NetworkManager (NetkworkManager-libreswan), where it fails to properly sanitize the VPN configuration from the local unprivileged user. In this configuration, composed by a key-value format, the plugin fails to escape special characters, leading the application to interpret values as keys. One of the most critical parameters that could be abused by a malicious user is the `leftupdown`key. This key takes an executable command as a value and is used to specify what executes as a callback in NetworkManager-libreswan to retrieve configuration settings back to NetworkManager. As NetworkManager uses Polkit to allow an unprivileged user to control the system's network configuration, a malicious actor could achieve local privilege escalation and potential code execution as root in the targeted machine by creating a malicious configuration.

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

对生成代码的控制不恰当(代码注入)

NetworkManager 安全漏洞

NetworkManager是一款网络管理守护程序。 NetworkManager存在安全漏洞，该漏洞源于NetworkManager 的 libreswan 客户端插件中发现了一个缺陷，它无法正确地清理本地非特权用户的 VPN 配置。

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