CVE-2008-0780 in MoinMoin
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in MoinMoin 1.5.x through 1.5.8 and 1.6.x before 1.6.1 allows remote attackers to inject arbitrary web script or HTML via the login action.
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Analysis
by VulDB Data Team • 08/05/2019
The cross-site scripting vulnerability identified as CVE-2008-0780 affects MoinMoin wiki software versions 1.5.x through 1.5.8 and 1.6.x before 1.6.1, representing a critical security flaw that enables remote attackers to execute malicious scripts within the context of user sessions. This vulnerability specifically targets the login action functionality of the wiki platform, making it particularly dangerous as it exploits the most fundamental authentication mechanism of the system. The flaw stems from inadequate input validation and output encoding practices within the authentication flow, allowing attackers to inject malicious code that persists in the application's response to legitimate user requests. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is classified as a weakness in web applications that fail to properly validate or encode user-supplied data before incorporating it into dynamic content. The attack vector is particularly insidious because it leverages the login process, which users naturally trust and interact with regularly, making successful exploitation more likely and potentially more damaging than other XSS scenarios.
The technical implementation of this vulnerability occurs when user input submitted during the login action is not adequately sanitized or encoded before being processed and rendered back to the user's browser. Attackers can craft malicious input strings containing script tags or other HTML elements that are then executed in the context of authenticated users' browsers. This allows for session hijacking, credential theft, and potential privilege escalation attacks. The vulnerability's impact extends beyond simple script execution as it can enable attackers to perform actions on behalf of authenticated users, potentially compromising the entire wiki system. The flaw demonstrates poor input validation practices that violate fundamental web security principles, specifically the principle of least privilege and proper data sanitization. According to ATT&CK framework, this vulnerability maps to T1059.007 (Scripting) and T1531 (Account Access Token Manipulation), as it enables attackers to execute malicious scripts and potentially manipulate user session tokens. The persistence of the vulnerability across multiple minor versions indicates a systemic issue in the codebase's approach to user input handling.
The operational impact of CVE-2008-0780 is severe for organizations relying on affected MoinMoin versions, as it provides attackers with a straightforward path to compromise user sessions and potentially gain unauthorized access to sensitive wiki content. The vulnerability can be exploited without requiring special privileges or advanced technical knowledge, making it particularly dangerous in environments where wiki systems serve as collaborative platforms for sensitive information sharing. Organizations may experience data breaches, unauthorized content modification, and potential exfiltration of confidential information. The attack can result in persistent backdoors within the wiki system, allowing attackers to maintain long-term access and continue compromising user sessions over time. This vulnerability also impacts the integrity of the authentication system, undermining user trust and potentially causing reputational damage to organizations relying on the affected wiki platforms. The widespread use of MoinMoin in enterprise and academic environments means that exploitation could affect numerous organizations simultaneously, amplifying the potential impact. Security teams must consider the possibility of lateral movement through compromised user sessions and the potential for privilege escalation if the wiki system has elevated access rights to other network resources.
Mitigation strategies for CVE-2008-0780 should prioritize immediate remediation through software updates to versions 1.6.1 or later, which contain the necessary patches to address the XSS vulnerability. Organizations should implement comprehensive input validation and output encoding measures to prevent similar issues in other parts of their web applications. The principle of defense in depth requires that all user-supplied data be treated as potentially malicious, with proper sanitization and encoding applied before any processing or display. Security measures should include implementing Content Security Policy headers to limit script execution, deploying web application firewalls to detect and block malicious payloads, and conducting regular security assessments of all web applications. Additionally, organizations should establish robust monitoring procedures to detect potential exploitation attempts and maintain up-to-date security patches for all software components. The vulnerability highlights the importance of regular security audits and the need for comprehensive security training for developers to prevent similar issues in future application development cycles. Incident response procedures should be updated to include specific protocols for handling XSS vulnerabilities, ensuring rapid response and containment of potential exploitation attempts.