QuickBlog v0.8 CMS - Multiple Web Vulnerabilities

2012-06-18T00:00:00
ID SECURITYVULNS:DOC:28186
Type securityvulns
Reporter Securityvulns
Modified 2012-06-18T00:00:00

Description

Title:

QuickBlog v0.8 CMS - Multiple Web Vulnerabilities

Date:

2012-05-12

References:

http://www.vulnerability-lab.com/get_content.php?id=567

VL-ID:

567

Common Vulnerability Scoring System:

6.5

Introduction:

QuickBlog est un gestionnaire de weblog ecrit en PHP4 compatible PHP5 et MySQL compatible MySQLi multi utilisateur multi langue multi theme Il est tres simple et tres lege Il utilise un editeur WYSIWYG TinyMCE avec possibilite d annexe

(Copy of the Vendor Homepage: http://www.comscripts.com/scripts/php.quickblog.2256.html )

Abstract:

The Vulnerability Laboratory Research Team discovered Multiple Web Vulnerabilities in QuickBlog v0.8 CMS.

Report-Timeline:

2012-05-12: Public or Non-Public Disclosure

Status:

Published

Exploitation-Technique:

Remote

Severity:

High

Details:

1.1 Multiple remote SQL Injection vulnerabilities are detected in the QuickBlog v0.8 Content Management System. The vulnerability allows an attacker (remote) or local low privileged user account to inject/execute own sql commands on the affected application dbms. The vulnerabilities are located on the application post requests of gestionpost or fct_affiche.inc & the bound vulnerable parameter page. Successful exploitation of the vulnerability results in dbms & application compromise.

Vulnerable File(s): [+] admin/gestionpost.php [+] include/fct_affiche.inc.php

Vulnerable Parameter(s): [+] page

1.2 Multiple persistent input validation vulnerabilities are detected in the QuickBlog v0.8 Content Management System. 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) or stable (persistent) context manipulation. Exploitation requires low user inter action & a privileged user account.

Vulnerable File(s): [+] recherche.php [+] commentaire/form.php [+] admin/samplemodifieddata.php [+] admin/sampleposteddata.php

Vulnerable Parameter(s): [+] name [+] title [+] nom & search

Proof of Concept:

1.1 The sql injection vulnerabilities can be exploited by remote attackers with privileged user account or with medium required user inter action. For demonstration or reproduce ...

PoC: http://127.0.0.1:8080/quickblog/admin/gestionpost.php?page=[SQL-INJECTION]

1.2 The persistent input validation vulnerabilities can be exploited by remote attackers with low privileged user account & low required user inter action. For demonstration or reproduce ...

Review: recherche.php

<form action="http://127.0.0.1/quickblog/recherche.php" method="post"> <input type="hidden" name="search" value="[PERSISTENT SCRIPT CODE!]" /> <input type="submit" value="[BUG]"/> </form>

Review: commentaire/form.php

<form method="post" action="http://127.0.0.1:8080/quickblog/commentaire/form.php" name="form_mess"/> <input type="hidden" name="ajout" value="true"/> <input type="hidden" name="idpost" value="1"/> <input type="hidden" name="nom" value="[PERSISTENT SCRIPT CODE!]"/> <input type="hidden" name="mail" value="asd@asd.asd"/> <input type="hidden" name="msg" value="12345"/> <img src="http://127.0.0.1:8080/quickblog/commentaire/captcha/captcha.php" alt="captcha"/>
<br>To validate your comment, please enter code below.<br> <input type="text" name="captcha" size="20" class="com" /> <br> <input type="submit" value="[PERSISTENT SCRIPT CODE!]" > </form>

Solution:

In file: admin/gestionpost.php In lines 85 - 89:

            if&#40;isset&#40;$_GET[&#96;page&#96;]&#41;&#41;
            {
                $page = $_GET[&#96;page&#96;];
                $page = $page - 1;
            }

edit:

            if&#40;isset&#40;$_GET[&#96;page&#96;]&#41;&#41;
            {
                $page = &#40;int&#41;$_GET[&#96;page&#96;];
            }

In file: include/fct_affiche.inc.php In lines 56 - 59:

            if&#40;isset&#40;$_GET[&#96;page&#96;]&#41;&#41;
            {
                $page = $_GET[&#96;page&#96;];
                $page = $page - 1;
            }

edit:

            if&#40;isset&#40;$_GET[&#96;page&#96;]&#41;&#41;
            {
                $page = &#40;int&#41;$_GET[&#96;page&#96;];
            }

In file: recherche.php In lines 52 - 55:

            if &#40;isset&#40;$_POST[&#96;&#96;search&#96;&#96;]&#41;&#41;
            {
                $mot = $_POST[&#96;&#96;search&#96;&#96;];
            }

edit:

            if &#40;isset&#40;$_POST[&#96;&#96;search&#96;&#96;]&#41;&#41;
            {
                $mot = htmlspecialchars&#40;strip_tags&#40;$_POST[&#96;&#96;search&#96;&#96;]&#41;&#41;;
            }

In file: commentaire/form.php In lines 41:

           $nom=$_POST[&#96;&#96;nom&#96;&#96;];

edit:

           $nom= htmlspecialchars&#40;strip_tags&#40;$_POST[&#96;&#96;nom&#96;&#96;]&#41;&#41;;

In file: admin/samplemodifieddata.php In lines 47:

           $titre = $_POST[&#96;&#96;title&#96;&#96;];

edit:

           $titre = htmlspecialchars&#40;strip_tags&#40;$_POST[&#96;&#96;title&#96;&#96;]&#41;&#41;;

In file: admin/sampleposteddata.php In lines 38:

          $titre = $_POST[&#96;&#96;title&#96;&#96;];

edit:

          $titre = htmlspecialchars&#40;strip_tags&#40;$_POST[&#96;&#96;title&#96;&#96;]&#41;&#41;;

... & 2x

if(isset($_GET[`page`])) { $page = (int)$_GET[`page`]; if($page<0) $page = 0; }

Risk:

1.1 The security risk of the sql injection vulnerabilities are estimated as high(-).

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

Credits:

Vulnerability Laboratory [Research Team] - snup (snup@vulnerability-lab.com)

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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