Description

CVE-2024-12621 affects the Yumpu E-Paper publishing plugin for WordPress, specifically versions 3.0.8 and below. The vulnerability stems from insufficient input sanitization and output escaping on user-supplied attributes within the plugin's 'YUMPU' shortcode. This flaw allows authenticated attackers with contributor-level access or higher to inject malicious JavaScript code into pages. When a user visits an injected page, the malicious script executes, potentially leading to data theft, account compromise, and other security breaches.

While the CVSS score is 6.4, indicating a medium severity, the SOCRadar Vulnerability Risk Score (SVRS) is 38, signifying a lower urgency level. This discrepancy stems from the SVRS incorporating a wider range of threat intelligence, including social media, news, and dark web data, leading to a more nuanced assessment.

Key Insights

1. Impact: The vulnerability allows attackers to inject arbitrary JavaScript code, potentially executing malicious scripts on a user's browser. This could lead to data exfiltration, account takeover, or the installation of malware.
2. Attack Vector: Authenticated attackers with contributor-level access or higher can exploit this vulnerability. This means attackers with legitimate access to the WordPress site can leverage this flaw.
3. Exploit Status: While active exploits have not been publicly reported, the vulnerability is potentially exploitable, and the ease of injecting JavaScript makes it a target for malicious actors.
4. Mitigation: The vulnerability is relatively straightforward to exploit, and attackers could easily weaponize it. Therefore, immediate action is necessary to patch the vulnerability and mitigate potential risks.

Mitigation Strategies

1. Update the Plugin: The most crucial mitigation strategy is to update the Yumpu E-Paper publishing plugin to version 3.0.9 or later. This update includes security patches addressing the vulnerability, effectively eliminating the risk.
2. Limit User Privileges: Restricting user privileges to the minimum necessary level reduces the potential impact of this vulnerability. If contributors do not need access to edit shortcode attributes, limiting their access can significantly reduce the risk.
3. Implement a Web Application Firewall (WAF): Deploying a WAF can help prevent the injection of malicious JavaScript code by filtering out malicious requests at the network level.
4. Regular Security Audits: Conduct frequent security audits to identify and remediate vulnerabilities. This proactive approach helps identify potential weaknesses before they can be exploited.

Additional Information

If you have further questions regarding this incident, you can use the "Ask to Analyst" feature on SOCRadar's platform, contact SOCRadar directly, or open a support ticket for more information.