module

runc (docker) File Descriptor Leak Privilege Escalation

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Disclosed
Jan 31, 2024
Created
Feb 5, 2024

Description

All versions of runc and Kubernetes are vulnerable to an arbitrary file write.
Due to a file descriptor leak it is possible to mount the host file system
with the permissions of runc (typically root).

Successfully tested on Ubuntu 22.04 with runc 1.1.7-0ubuntu1~22.04.1 and runc 1.1.11 using Docker build.
Successfully tested on Debian 12.4.0 with runc 1.1.11 using Docker build.
Successfully tested on Arch Linux 12/1/2024 with runc 1.1.10-1 using Docker build.

Authors

h00die
SickMcNugget
jheysel-r7
Rory McNamara

Platform

Linux

Architectures

x86, 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/runc_cwd_priv_esc
    msf exploit(runc_cwd_priv_esc) > show targets
        ...targets...
    msf exploit(runc_cwd_priv_esc) > set TARGET < target-id >
    msf exploit(runc_cwd_priv_esc) > show options
        ...show and set options...
    msf exploit(runc_cwd_priv_esc) > exploit
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