module

Reliable Datagram Sockets (RDS) rds_atomic_free_op NULL pointer dereference Privilege Escalation

Disclosed	Created
2018-11-01	2020-01-22

Disclosed

2018-11-01

Created

2020-01-22

Description

This module attempts to gain root privileges on Linux systems by abusing
a NULL pointer dereference in the `rds_atomic_free_op` function in the
Reliable Datagram Sockets (RDS) kernel module (rds.ko).

Successful exploitation requires the RDS kernel module to be loaded.
If the RDS module is not blacklisted (default); then it will be loaded
automatically.

This exploit supports 64-bit Ubuntu Linux systems, including distributions
based on Ubuntu, such as Linux Mint and Zorin OS.

Target offsets are available for:

Ubuntu 16.04 kernels 4.4.0 Ubuntu 16.04 kernels 4.8.0
This exploit does not bypass SMAP. Bypasses for SMEP and KASLR are included.
Failed exploitation may crash the kernel.

This module has been tested successfully on various 4.4 and 4.8 kernels.

Authors

Mohamed Ghannam
Jann Horn
wbowling
bcoles bcoles@gmail.com
nstarke

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

NEW

Explore Exposure Command

Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.

Try it today