module

Linux Kernel UDP Fragmentation Offset (UFO) Privilege Escalation

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Disclosed
2017-08-10
Created
2019-03-19

Description

This module attempts to gain root privileges on Linux systems by abusing
UDP Fragmentation Offload (UFO).

This exploit targets only systems using Ubuntu (Trusty / Xenial) kernels
4.4.0-21 based on Ubuntu, such as Linux Mint.

The target system must have unprivileged user namespaces enabled
and SMAP disabled.

Bypasses for SMEP and KASLR are included. Failed exploitation
may crash the kernel.

This module has been tested successfully on various Ubuntu and Linux
Mint systems, including:

Ubuntu 14.04.5 4.4.0-31-generic x64 Desktop;
Ubuntu 16.04 4.8.0-53-generic;
Linux Mint 17.3 4.4.0-89-generic;
Linux Mint 18 4.8.0-58-generic

Authors

Andrey Konovalov
h00die
bcoles bcoles@gmail.com

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/ufo_privilege_escalation
    msf exploit(ufo_privilege_escalation) > show targets
        ...targets...
    msf exploit(ufo_privilege_escalation) > set TARGET < target-id >
    msf exploit(ufo_privilege_escalation) > show options
        ...show and set options...
    msf exploit(ufo_privilege_escalation) > exploit
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