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Home > Cybersecurity > Security flaw on a WordPress plugin lets users to reset and delete sites

Security flaw on a WordPress plugin lets users to reset and delete sites

WordPress plugin with over 8000 users has a security flaw that enables attackers to delete or reset entire websites that are vulnerable.

Furkan Avcı by Furkan Avcı
October 27, 2021
in Cybersecurity, Software
2 min read
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Security flaw on the popular WordPress plugin allows attackers to reset and delete sites
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Hashthemes Demo Importer is a WordPress plugin that allows users to import full demos with just one click. The plug-in can be used to download any full demos, it was initially developed to add a demo importer functionality to HashThemes. Security researchers discovered a high severity security flaw found in the popular plugin, which has 8000 active installs. The vulnerability allows authenticated attackers to reset and wipe vulnerable websites.

Security flaw of the plugin

Wordfence QA engineer and threat analyst Ram Gall explained that the vulnerability came from the leaked AJAX nonce admin dashboard for the use of all users as a result of the plugin failing to properly perform nonce checks. This allows any non-authorized users who were running any of the unpatched versions of Hashthemes Demo Importer to be able to reset or wipe entire databases of the vulnerable websites.

Ram Gall talked about the effects and causes of vulnerability,

Ram Gall, QA engineer, and threat analyst of Wordfence
Ram Gall, QA Engineer and Threat Analyst of Wordfence

“While most vulnerabilities can have destructive effects, it would be impossible to recover a site where this vulnerability was exploited unless it had been backed up. Any logged-in user could trigger the hdi_install_demo AJAX function and provide a reset parameter set to true, resulting in the plugin running its database_reset function.

This function wiped the database by truncating every database table on the site except for wp_options, wp_users, and wp_usermeta. Once the database was wiped, the plugin would then run its clear_uploads function, which deleted every file and folder in wp-content/uploads.”

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Furkan Avcı

Furkan Avcı

Furkan Avcı is an editor at Cloud7 News covering Linux distros, web hosting providers, data centers, and cloud computing issues and trends. Furkan Avcı is a Linux user and administrator. Furkan is a Java programmer and a cybersecurity enthusiast. Furkan has a bachelor’s degree in Mechatronics Engineering.

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