CVE-2017-17091 Explained : Impact and Mitigation

WordPress before version 4.9.1 is vulnerable to a security issue in the file wp-admin/user-new.php, allowing remote attackers to bypass access restrictions.

Understanding CVE-2017-17091

In versions of WordPress prior to 4.9.1, a specific file within the system can be manipulated to evade access restrictions, posing a security risk.

What is CVE-2017-17091?

This CVE refers to a vulnerability in WordPress versions before 4.9.1 that enables attackers to bypass intended access restrictions by exploiting a specific file.

The Impact of CVE-2017-17091

The vulnerability allows remote attackers to gain unauthorized access to WordPress sites by using a string derived from the user ID, potentially compromising sensitive data and site integrity.

Technical Details of CVE-2017-17091

WordPress before version 4.9.1 is susceptible to a security flaw that can be exploited by attackers to bypass access controls.

Vulnerability Description

The file wp-admin/user-new.php in WordPress versions prior to 4.9.1 sets a key to a string that can be easily derived from the user ID, enabling attackers to bypass access restrictions.

Affected Systems and Versions

Product: WordPress
Vendor: WordPress
Versions affected: All versions before 4.9.1

Exploitation Mechanism

Attackers can exploit this vulnerability by entering a specific string derived from the user ID, allowing them to evade intended access restrictions.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are crucial to mitigate the risks associated with CVE-2017-17091.

Immediate Steps to Take

Update WordPress to version 4.9.1 or later to patch the vulnerability.
Monitor user activities and access to detect any suspicious behavior.

Long-Term Security Practices

Regularly update WordPress and plugins to ensure the latest security patches are applied.
Implement strong password policies and user access controls to enhance site security.

Patching and Updates

Apply the security update provided by WordPress to address the vulnerability and enhance the overall security posture of the system.