module

Local Privilege Escalation via CVE-2023-0386

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Disclosed
2023-03-22
Created
2024-09-27

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.

Authors

xkaneiki
sxlmnwb
Takahiro Yokoyama

Platform

Linux

Architectures

x64

References

Module Options

To display the available options, load the module within the Metasploit console and run the commands ‘show options’ or ‘show advanced’:


    msf > use exploit/linux/local/cve_2023_0386_overlayfs_priv_esc
    msf exploit(cve_2023_0386_overlayfs_priv_esc) > show targets
        ...targets...
    msf exploit(cve_2023_0386_overlayfs_priv_esc) > set TARGET < target-id >
    msf exploit(cve_2023_0386_overlayfs_priv_esc) > show options
        ...show and set options...
    msf exploit(cve_2023_0386_overlayfs_priv_esc) > exploit
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