Rapid7

module

Local Privilege Escalation via CVE-2023-0386

Disclosed
Mar 22, 2023

Description

This exploit targets the Linux kernel bug in OverlayFS.

A flaw was found in the Linux kernel, where unauthorized access to the execution of the setuid file with capabilities
was found in the Linux kernel's OverlayFS subsystem in how a user copies a capable file from a nosuid mount into another mount.
This uid mapping bug allows a local user to escalate their privileges on the system.
Title
Rapid7 Labs

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