CVE-2022-1334 in WP YouTube Live Plugin
Summary
by MITRE • 05/16/2022
The WP YouTube Live WordPress plugin before 1.8.3 does not validate, sanitise and escape various of its settings, which could allow high privilege users such as admin to perform Cross-Site Scripting attacks even when unfiltered_html is disallowed
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Analysis
by VulDB Data Team • 05/18/2022
The WP YouTube Live WordPress plugin vulnerability CVE-2022-1334 represents a critical cross-site scripting flaw that affects versions prior to 1.8.3. This vulnerability resides in the plugin's failure to properly validate, sanitize, and escape user-controllable settings parameters within the WordPress admin interface. The flaw specifically targets high-privilege users including administrators who possess the ability to modify plugin configurations, making it particularly dangerous in environments where admin access is compromised or where attackers can escalate privileges through other means.
The technical nature of this vulnerability stems from inadequate input validation mechanisms within the plugin's settings handling code. When administrators configure the plugin settings, the system fails to properly sanitize user inputs before storing or rendering them in the web interface. This lack of proper sanitization creates an environment where malicious scripts can be injected into the plugin's configuration fields. The vulnerability is particularly concerning because it operates even when WordPress's unfiltered_html capability is disabled, which typically serves as a crucial security barrier against XSS attacks by preventing the execution of raw HTML and script content in user-generated posts and comments.
From an operational perspective, this vulnerability significantly increases the attack surface for WordPress installations using the affected plugin. An attacker who gains administrative access or can convince an administrator to perform malicious actions through social engineering could execute arbitrary JavaScript code within the context of the administrator's browser session. This could lead to complete account compromise, data exfiltration, and potential lateral movement within the WordPress environment. The impact extends beyond immediate session hijacking as attackers could use this vulnerability to install backdoors, modify content, or manipulate plugin configurations to maintain persistent access.
The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws in web applications, and demonstrates characteristics consistent with ATT&CK technique T1548.001 which involves privilege escalation through the exploitation of application vulnerabilities. The attack vector typically involves an authenticated user with administrative privileges who modifies plugin settings to inject malicious payloads. Security practitioners should note that this vulnerability does not require complex exploitation techniques, as the flaw exists in the core input handling mechanisms of the plugin. Organizations should prioritize immediate patching to version 1.8.3 or later, while also implementing additional monitoring for suspicious configuration changes and user activities within the WordPress admin interface.
Mitigation strategies should include immediate implementation of the vendor-provided patch, followed by comprehensive security auditing of all installed plugins to identify similar vulnerabilities. Network-based intrusion detection systems should be configured to monitor for suspicious JavaScript payloads in WordPress admin traffic, while also implementing proper input validation at multiple layers including application-level, database-level, and network-level controls. Regular security assessments should include plugin vulnerability scanning to prevent similar issues from remaining undetected in other components of the WordPress ecosystem. The vulnerability underscores the critical importance of maintaining up-to-date plugins and implementing proper security controls around administrative access, as even privileged users can become vectors for exploitation if proper input validation mechanisms are absent from plugin code.