Arbitrary Code Injection Affecting NetworkManager-libreswan-debuginfo package, versions <0:1.2.4-4.amzn2


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.05% (19th percentile)

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  • Snyk IDSNYK-AMZN2-NETWORKMANAGERLIBRESWANDEBUGINFO-8545230
  • published20 Dec 2024
  • disclosed22 Oct 2024

Introduced: 22 Oct 2024

CVE-2024-9050  (opens in a new tab)
CWE-94  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 NetworkManager-libreswan-debuginfo to version 0:1.2.4-4.amzn2 or higher.
This issue was patched in ALAS2-2024-2703.

NVD Description

Note: Versions mentioned in the description apply only to the upstream NetworkManager-libreswan-debuginfo package and not the NetworkManager-libreswan-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

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 leftupdownkey. 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 Scores

version 3.1