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31 lines
No EOL
889 B
Text
31 lines
No EOL
889 B
Text
# Exploit Title: MyBB Threads to Link Plugin v1.3 - Persistent XSS
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# Date: 3/15/2018
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# Author: 0xB9
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# Contact: luxorforums.com/User-0xB9 or 0xB9[at]protonmail.com
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# Software Link: https://community.mybb.com/mods.php?action=view&pid=1065
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# Version: v1.3
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# Tested on: Ubuntu 17.10
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CVE: CVE-2018-10365
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1. Description:
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When editing a thread the user is given to the option to convert the thread to a link.
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2. Proof of Concept:
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Persistent XSS
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- Edit a thread or post you've made
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- At the bottom of the edit page in the Thread Link box input the following <a """><SCRIPT>alert("XSS")</SCRIPT>">
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- Now visit the forum your thread/post exists in to see the alert.
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3. Solution:
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The plugin has since been removed after notifying the author.
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Patch in line 83:
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$thread['tlink'] = ($thread['tlink']);
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to
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$thread['tlink'] = htmlspecialchars_uni($thread['tlink']); |