Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2024-9050: 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.
Fixed packages 3
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | NetworkManager-libreswan | 0:1.2.4-4.amzn2 |
| Amazon Linux · 2 | NetworkManager-libreswan-debuginfo | 0:1.2.4-4.amzn2 |
| Amazon Linux · 2 | NetworkManager-libreswan-gnome | 0:1.2.4-4.amzn2 |
Vulnerabilities 1
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High 7.8
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…
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2024-9050.html