CVE-2018-17584 in WP Fastest Cache Plugin
Summary
by MITRE
The WP Fastest Cache plugin 0.8.8.5 for WordPress has CSRF via the wp-admin/admin.php wpfastestcacheoptions page.
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Analysis
by VulDB Data Team • 08/29/2023
The WP Fastest Cache plugin version 0.8.8.5 for WordPress contains a cross-site request forgery vulnerability that allows attackers to perform unauthorized actions on behalf of authenticated users. This vulnerability exists within the wp-admin/admin.php page when accessing the wpfastestcacheoptions endpoint, making it a critical security flaw that could compromise WordPress installations. The vulnerability stems from the plugin's failure to implement proper anti-CSRF measures when processing administrative requests, creating an attack surface where malicious actors can exploit user sessions to execute unwanted operations without their knowledge or consent.
The technical flaw manifests as the absence of anti-CSRF tokens or similar validation mechanisms in the plugin's administrative interface. When an authenticated administrator visits a malicious website or clicks on a crafted link, the attacker can trigger requests to the vulnerable wpfastestcacheoptions page without requiring the user to explicitly confirm the action. This allows for potential modification of cache settings, enabling attackers to manipulate the caching behavior of the WordPress site, potentially leading to service disruption, performance degradation, or even cache poisoning attacks that could affect site availability and user experience.
The operational impact of this vulnerability extends beyond simple configuration changes, as it can enable attackers to modify critical caching parameters that affect how the WordPress site delivers content to users. An attacker could potentially disable caching entirely, causing significant performance degradation, or manipulate cache settings to redirect traffic through malicious endpoints. The vulnerability affects all WordPress installations using the affected plugin version, making it particularly dangerous as it requires no specialized knowledge of the target system beyond basic web application exploitation techniques. This makes it an attractive target for automated attacks and increases the potential attack surface for malicious actors seeking to compromise WordPress sites.
Mitigation strategies should include immediate plugin updates to versions that address the CSRF vulnerability, as well as implementing additional security measures such as using strong authentication mechanisms, enabling two-factor authentication, and regularly monitoring administrative access logs for suspicious activities. Organizations should also consider implementing web application firewalls and network segmentation to limit the impact of potential exploitation. According to CWE standards, this vulnerability maps to CWE-352, which specifically addresses Cross-Site Request Forgery weaknesses in web applications. The ATT&CK framework categorizes this as a privilege escalation technique, as it allows attackers to perform administrative actions with the privileges of authenticated users. Regular security audits and vulnerability assessments should be conducted to identify similar CSRF vulnerabilities in other WordPress plugins and themes, as the attack surface for such vulnerabilities remains significant in the WordPress ecosystem.