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Mac OS X NFS Mount Privilege Escalation Exploit

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Mac OS X NFS Mount Privilege Escalation Exploit

Disclosed
04/11/2014
Created
05/30/2018

Description

This exploit leverages a stack buffer overflow vulnerability to escalate privileges. The vulnerable function nfs_convert_old_nfs_args does not verify the size of a user-provided argument before copying it to the stack. As a result, by passing a large size as an argument, a local user can overwrite the stack with arbitrary content. Mac OS X Lion Kernel <= xnu-1699.32.7 except xnu-1699.24.8 are affected.

Author(s)

  • Kenzley Alphonse
  • joev <joev@metasploit.com>

Platform

OSX

Architectures

x64

Development

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

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