CVE-2011-5182 in Lanoba Social plugin
Summary
by MITRE
** DISPUTED ** Cross-site scripting (XSS) vulnerability in lanoba-social-plugin/index.php in the Lanoba Social plugin 1.0 for WordPress allows remote attackers to inject arbitrary web script or HTML via the action parameter. NOTE: the vendor disputes this issue, stating "Lanoba s plug in does sanitize user input, and because that input is never sent to the browser, an attacker has no way of executing script or code on a user s behalf."
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Analysis
by VulDB Data Team • 02/02/2025
The CVE-2011-5182 vulnerability resides within the Lanoba Social plugin version 1.0 for WordPress, specifically targeting the lanoba-social-plugin/index.php file. This issue falls under the category of cross-site scripting vulnerabilities that represent one of the most prevalent and dangerous web application security flaws. The vulnerability manifests when the action parameter in the plugin's index.php file fails to properly sanitize user input before processing, creating an avenue for malicious actors to inject arbitrary web scripts or HTML code into the application's response. From a cybersecurity perspective, this represents a classic injection flaw that can potentially compromise user sessions and execute unauthorized commands on behalf of victims. The vulnerability's classification aligns with CWE-79, which specifically addresses cross-site scripting flaws in software applications.
The technical exploitation of this vulnerability occurs through the manipulation of the action parameter within the plugin's URL structure, allowing attackers to craft malicious payloads that can be executed when other users view the affected pages. This type of vulnerability typically enables attackers to steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users. The attack vector demonstrates a fundamental failure in input validation and output encoding practices, where user-supplied data flows directly into the application's response without proper sanitization or escaping mechanisms. The vulnerability's impact is particularly concerning in WordPress environments where plugins often have elevated privileges and access to user data.
The vendor's response to this reported vulnerability is noteworthy as it demonstrates a significant discrepancy in security assessment between the reporting party and the software vendor. The vendor's assertion that "Lanoba s plug in does sanitize user input, and because that input is never sent to the browser, an attacker has no way of executing script or code on a user s behalf" suggests a fundamental misunderstanding of how XSS vulnerabilities function. This position contradicts established security principles where even seemingly sanitized inputs can be exploited if proper context-aware escaping is not implemented. The vendor's claim that "input is never sent to the browser" directly conflicts with standard XSS attack methodologies where malicious scripts can be stored and later executed when legitimate users access affected pages. This disagreement highlights the complexity of security assessments and the importance of independent verification of reported vulnerabilities.
The operational impact of this vulnerability extends beyond simple script injection, potentially enabling more sophisticated attacks such as session hijacking, credential theft, or redirection to phishing sites. When considering the ATT&CK framework, this vulnerability could map to techniques such as T1059 for command and scripting interpreter usage, and T1566 for credential access through social engineering. The presence of such vulnerabilities in widely-used plugins like Lanoba Social can create widespread exposure across numerous WordPress installations, particularly given the plugin's potential for integration with various user-facing interfaces. Organizations running WordPress sites with this plugin would be vulnerable to attacks that could compromise user accounts and potentially lead to full system compromise if attackers can leverage the vulnerability to gain unauthorized access to administrative functions.
Mitigation strategies for this vulnerability should focus on comprehensive input validation and output encoding practices, ensuring that all user-supplied data is properly escaped based on the context where it will be rendered. The implementation of Content Security Policy (CSP) headers can provide additional protection against XSS attacks by restricting the sources from which scripts can be loaded. Regular security audits and vulnerability assessments should be conducted to identify similar issues in other plugins and themes, as the presence of one vulnerable component often indicates broader security concerns within the application ecosystem. The incident underscores the critical importance of maintaining current security practices and the necessity of validating vendor security claims through independent analysis. Organizations should consider implementing web application firewalls and monitoring systems to detect and prevent exploitation attempts, while also ensuring that all plugins and themes are regularly updated to address known security vulnerabilities.