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# Exploit Title: Joomla Extension Convert Forms version 2.0.3 is vulnerable to Formula Injection (CSV Injection)
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# Google Dork: N/A
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# Date: 12-04-2018
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################################
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# Exploit Author: Jetty Sairam
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################################
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# Software Link: https://extensions.joomla.org/extensions/extension/contacts-and-feedback/forms/convert-forms/
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# Affected Version: 2.03 and before
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#Category: Plugins and Extensions
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# Tested on: WiN7_x64
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# CVE : CVE-2018-10063
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1. Application Description:
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Convert Forms provides a framework to build custom forms for Joomla users.
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2. Technical Description:
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Custom Forms version 2.0.3 is affected by the vulnerability Remote Command Execution using CSV Injection. This allows a public user to inject commands as a part of form fields and when a user with higher privilege exports the form data in CSV opens the file on their machine, the command is executed.
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3. Proof Of Concept:
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Enter the payload @SUM(1+1)*cmd|' /C calc'!A0 in the form fields and submit.
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When high privileged user logs into the application to export form data in CSV and opens the file.
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Formula gets executed and calculator will get popped in his machine.
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4. Solution:
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Upgrade to version 2.0.4
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https://extensions.joomla.org/extensions/extension/contacts-and-feedback/forms/convert-forms/
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5. Reference:
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https://vel.joomla.org/resolved/2160-convert-forms-2-0-3-csv-injection
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https://www.tassos.gr/blog/convert-forms-2-0-4-security-release
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https://vel.joomla.org/articles/2140-introducing-csv-injection |