RARLAB WinRAR ACE Format Input Validation Remote Code Execution
Description
In WinRAR versions prior to and including 5.61, there is path traversal vulnerability when crafting the filename field of the ACE format (in UNACEV2.dll). When the filename field is manipulated with specific patterns, the destination (extraction) folder is ignored, thus treating the filename as an absolute path. This module will attempt to extract a payload to the startup folder of the current user. It is limited such that we can only go back one folder. Therefore, for this exploit to work properly, the user must extract the supplied RAR file from one folder within the user profile folder (e.g. Desktop or Downloads). User restart is required to gain a shell.
Author(s)
- Nadav Grossman
- Imran E. Dawoodjee <imrandawoodjee.infosec@gmail.com>
Platform
Windows
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/windows/fileformat/winrar_ace
msf exploit(winrar_ace) > show targets
...targets...
msf exploit(winrar_ace) > set TARGET < target-id >
msf exploit(winrar_ace) > show options
...show and set options...
msf exploit(winrar_ace) > exploit
- Collect and share all the information you need to conduct a successful and efficient penetration test
- Simulate complex attacks against your systems and users
- Test your defenses to make sure they’re ready
- Automate Every Step of Your Penetration Test
Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.
– Jim O’Gorman | President, Offensive Security