what you don't know can hurt you

BigPond 3G21WB Hardcoded Credentials / Command Injection

BigPond 3G21WB Hardcoded Credentials / Command Injection
Posted Oct 12, 2012
Authored by Roberto Paleari

BigPond version 3G21WB suffers from hard-coded credentials and command injection vulnerabilities.

tags | exploit, vulnerability
MD5 | 9cbd70f601cd8300741d880cede1fe6d

BigPond 3G21WB Hardcoded Credentials / Command Injection

Change Mirror Download
Hard-coded credentials and command-injection vulnerabilities on BigPond 3G21WB
==============================================================================

[ADVISORY INFORMATION]
Title: Hard-coded credentials and command-injection vulnerabilities
on BigPond 3G21WB
Discovery date: 17/09/2012
Release date: 11/10/2012
Credits: Roberto Paleari (roberto@greyhats.it, @rpaleari)

[VULNERABILITY INFORMATION]
Class: Authentication bypass, command-injection

[AFFECTED PRODUCTS]
We confirm the following device models to be affected:
* BigPond 3G21WB

Similar routers are probably vulnerable to these very same issues.

[VULNERABILITY DETAILS]
The firmware running on the affected routers is subject to multiple security
issues that allow an unauthenticated attacker to gain administrative access to
the device and execute arbitrary commands. In the following paragraphs we
describe the details of the vulnerabilities we identified.

a) Hard-coded credentials
A user can authenticate to the web server running on the device using the
credentials "Monitor:bigpond1". These credentials are hard-coded, and cannot
be changed by a normal user.

b) Command-injection vulnerability
The "ping.cgi" web page is subject to a command-injection vulnerability, as
the server-side script does not properly validate user-supplied input.

The following URL exploits this issue, executing the "ls /" command:
http://<device IP address>/ping.cgi?DIA_IPADDRESS=;%20cat%20/etc/passwd

[REMEDIATION]
We are not aware of an updated firmware that corrects the issues described in
this advisory. We suggest users to disable web access on the WAN side.

[DISCLOSURE TIME-LINE]
* 17/09/2012 - Initial vendor contact.

* 18/09/2012 - Vendor replied asking for details.

* 19/09/2012 - The author replied and asked for a technical
contact. Disclosure date set to October 10th, 2012 (3
weeks).

* 19/09/2012 - Vendor replied, providing the phone contact number of the
Technical Support Department.

* 20/09/2012 - The author replied, asking to keep all the communication
through e-mail, in order to keep track of the whole
conversation.

* 24/09/2012 - No response from the vendor. The author re-sent the last
e-mail.

* 04/10/2012 - No response from the vendor. The author re-sent the last
e-mail (again).

* 11/10/2012 - Still no response from the vendor. Disclosure.

[DISCLAIMER]
The author is not responsible for the misuse of the information provided in
this security advisory. The advisory is a service to the professional security
community. There are NO WARRANTIES with regard to this information. Any
application or distribution of this information constitutes acceptance AS IS,
at the user's own risk. This information is subject to change without notice.

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

June 2019

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

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2019 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close