CVE-2012-5368 in phpMyAdmin
Summary
by MITRE
phpMyAdmin 3.5.x before 3.5.3 uses JavaScript code that is obtained through an HTTP session to phpmyadmin.net without SSL, which allows man-in-the-middle attackers to conduct cross-site scripting (XSS) attacks by modifying this code.
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Analysis
by VulDB Data Team • 12/19/2021
The vulnerability described in CVE-2012-5368 represents a critical security flaw in phpMyAdmin versions 3.5.x prior to 3.5.3 that exposes the application to man-in-the-middle attacks through insecure JavaScript code delivery. This vulnerability specifically targets the application's reliance on HTTP connections to fetch JavaScript resources from phpmyadmin.net, creating an exploitable vector for cross-site scripting attacks. The flaw demonstrates a fundamental security oversight in how the application handles external resource loading and network communication protocols.
The technical implementation of this vulnerability stems from phpMyAdmin's design pattern of dynamically loading JavaScript code through HTTP sessions without employing secure transport mechanisms. When users access phpMyAdmin, the application establishes HTTP connections to phpmyadmin.net to retrieve JavaScript components that enhance the user interface and functionality. This approach creates an attack surface where malicious actors can intercept the HTTP traffic and modify the JavaScript code during transmission. The absence of SSL/TLS encryption means that the communication channel is vulnerable to eavesdropping and modification, allowing attackers to inject malicious code that will execute within the victim's browser context. This type of vulnerability is classified as CWE-319 - Cleartext Transmission of Sensitive Information, which specifically addresses the exposure of sensitive data through unencrypted channels.
The operational impact of this vulnerability extends beyond simple XSS exploitation, as it provides attackers with the capability to execute arbitrary code within the context of authenticated phpMyAdmin sessions. When successful, the attack can lead to complete compromise of database server access, allowing attackers to read, modify, or delete sensitive data, create new database users, or even escalate privileges within the database environment. The vulnerability is particularly dangerous because it affects the core administrative interface of phpMyAdmin, which typically runs with elevated privileges and has access to database credentials and sensitive operational data. Attackers can leverage this vulnerability to establish persistent access to database environments, potentially leading to data breaches, unauthorized data manipulation, or further lateral movement within network infrastructures where database servers reside.
The attack vector for this vulnerability aligns with ATT&CK technique T1566.001 - Phishing: Spearphishing Attachment, where the malicious JavaScript code injection occurs through compromised network traffic rather than traditional phishing methods. The vulnerability also maps to ATT&CK technique T1059.007 - Command and Scripting Interpreter: JavaScript, as the malicious code executes within the browser's JavaScript environment. Organizations using vulnerable phpMyAdmin versions face significant risk exposure, particularly in environments where network traffic is not properly secured or monitored for man-in-the-middle attacks. The vulnerability underscores the importance of secure communication protocols and demonstrates how seemingly minor implementation decisions in network security can create catastrophic security implications. The recommended mitigation involves upgrading to phpMyAdmin version 3.5.3 or later, which implements proper SSL/TLS encryption for external resource delivery, and implementing network security controls such as SSL inspection and traffic monitoring to detect and prevent such attacks.
The broader implications of this vulnerability highlight the critical importance of secure coding practices and the need for comprehensive security testing of all network communications within web applications. This flaw represents a classic example of how insecure communication protocols can undermine even well-designed applications, emphasizing the necessity of implementing defense-in-depth strategies that include secure transport mechanisms, network monitoring, and regular security assessments. The vulnerability serves as a reminder that modern security practices must account for all potential attack vectors, including those that arise from legitimate application functionality that inadvertently creates security weaknesses. Organizations should implement continuous monitoring solutions to detect anomalous network traffic patterns that might indicate man-in-the-middle attacks and ensure that all external resource dependencies are properly secured through encrypted communication channels.