CVE-2022-46799 in Thirteen Web Solution Easy Testimonial Slider and Form Plugin
Summary
by MITRE • 05/08/2023
Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in I Thirteen Web Solution Easy Testimonial Slider and Form plugin <= 1.0.15 versions.
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Analysis
by VulDB Data Team • 05/28/2023
The CVE-2022-46799 vulnerability represents a critical unauthenticated reflected cross-site scripting flaw discovered in the I Thirteen Web Solution Easy Testimonial Slider and Form WordPress plugin. This vulnerability affects versions up to and including 1.0.15, making it a significant concern for WordPress site administrators who have deployed this plugin. The issue stems from insufficient input validation and output escaping mechanisms within the plugin's codebase, specifically in how it handles user-supplied data that is reflected back to users without proper sanitization.
The technical implementation of this vulnerability occurs when the plugin fails to properly sanitize or escape user input parameters before rendering them in web responses. Attackers can exploit this by crafting malicious URLs containing script payloads that are then reflected back to unsuspecting users who visit the compromised page. This type of vulnerability falls under CWE-79 which specifically addresses Cross-Site Scripting flaws, and more precisely maps to CWE-74 where improper neutralization of special elements in output is exploited. The reflected nature of this XSS means that the malicious script is not stored on the server but is instead delivered through a malicious URL that triggers the vulnerability when executed in a victim's browser context.
The operational impact of this vulnerability extends beyond simple script execution as it can enable attackers to perform various malicious activities including session hijacking, credential theft, redirection to malicious sites, and data exfiltration. Since the vulnerability is unauthenticated, attackers do not require valid credentials to exploit it, making it particularly dangerous for publicly accessible websites. The plugin's functionality as a testimonial slider and form handler makes it a prime target for exploitation as it likely processes user inputs through various form fields and URL parameters. This vulnerability can be leveraged by threat actors to inject malicious JavaScript code that executes in the context of other users' browsers, potentially compromising their sessions and accessing sensitive information.
Mitigation strategies for CVE-2022-46799 should prioritize immediate plugin updates to versions that address the reflected XSS vulnerability, as recommended by the plugin vendor and security researchers. System administrators should implement comprehensive input validation and output escaping mechanisms across all user-facing interfaces, particularly those handling form submissions and URL parameters. The implementation of Content Security Policy headers can provide an additional layer of defense against XSS attacks by restricting the sources from which scripts can be loaded. Security monitoring should include detection of suspicious URL patterns and user agent behavior that might indicate exploitation attempts. Organizations should also consider implementing web application firewalls to filter malicious requests and maintain up-to-date vulnerability assessments to identify similar issues in other plugins or custom code. From an ATT&CK framework perspective, this vulnerability aligns with T1059.007 for scripting and T1566.001 for spearphishing attachments, as it enables attackers to execute malicious code through web-based vectors that can lead to further compromise of affected systems.