Wordpress Email Subscribers by Icegram Express is a popular plugin used by WordPress and WooCommerce websites for email marketing, newsletters, and automation. It allows users to manage and send email campaigns, automate email sequences, and create subscription forms. The plugin is commonly used by bloggers, small businesses, and e-commerce sites to engage with their audience. Its ease of use and integration with WordPress makes it a preferred choice for many. However, like all software, it is essential to ensure it is secure from vulnerabilities.
The SQL Injection vulnerability in the Email Subscribers by Icegram Express plugin allows attackers to inject malicious SQL queries into the database. This can be exploited by unauthenticated users to extract sensitive information from the database. The vulnerability exists due to insufficient escaping of user-supplied parameters in SQL queries. It affects all versions of the plugin up to and including 5.7.14.
The vulnerability is found in the 'run' function of the 'IG_ES_Subscribers_Query' class. The issue arises because user-supplied parameters are not properly escaped, and the existing SQL queries are not sufficiently prepared. This allows attackers to append additional SQL queries into the existing ones. The vulnerable endpoint is '/wp-admin/admin-post.php', where the 'advanced_filter' parameter is exploited. Attackers can use this to manipulate the SQL queries and retrieve data from the database.
If exploited, this vulnerability can lead to significant data breaches. Attackers can access sensitive information, including user credentials, emails, and other personal data stored in the database. It can also compromise the integrity and availability of the database, potentially leading to data loss or corruption. This poses a severe risk to the affected website's security and the privacy of its users.
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References:
- Update the Email Subscribers by Icegram Express plugin to the latest version.
- Implement proper escaping and parameterized queries for all user inputs.
- Regularly review and test your WordPress plugins for vulnerabilities.
- Apply security patches and updates promptly.
- Monitor your website for any unusual activity and conduct regular security audits.
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