CVE-2020-5613 in KonaWiki
Summary
by MITRE
Cross-site scripting vulnerability in KonaWiki 3.1.0 and earlier allows remote attackers to execute an arbitrary script via a specially crafted URL.
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Analysis
by VulDB Data Team • 07/30/2020
The CVE-2020-5613 vulnerability represents a critical cross-site scripting flaw identified in KonaWiki version 3.1.0 and earlier releases, exposing web applications to significant security risks. This vulnerability specifically affects the wiki platform's handling of user input within URL parameters, creating an avenue for malicious actors to inject and execute arbitrary scripts in the context of a victim's browser session. The flaw demonstrates a classic weakness in input validation and output encoding practices that are fundamental to preventing XSS attacks. The vulnerability stems from the application's failure to properly sanitize or escape user-supplied data before rendering it within web pages, allowing attackers to craft malicious URLs that contain script payloads. When a victim navigates to such a crafted URL, the malicious code executes within their browser, potentially leading to session hijacking, data theft, or further exploitation of the victim's browser environment. This issue falls under the Common Weakness Enumeration category CWE-79, which specifically addresses Cross-site Scripting vulnerabilities, and aligns with ATT&CK technique T1059.001 for Command and Scripting Interpreter. The vulnerability's impact extends beyond simple script execution as it can be leveraged to establish persistent access patterns, manipulate user sessions, and potentially escalate privileges within the affected web application.
The technical exploitation of CVE-2020-5613 requires attackers to craft malicious URLs containing script payloads that are then processed by the vulnerable KonaWiki application. The flaw occurs during the URL parameter handling phase where user input is not properly validated or escaped before being rendered in the web interface. Attackers can leverage various scripting techniques including javascript: protocols, inline event handlers, or more sophisticated payload delivery mechanisms that bypass basic security controls. The vulnerability's remote nature means that attackers do not require physical access or local network presence to exploit it, making it particularly dangerous in public-facing web applications. The impact of successful exploitation includes potential session hijacking, credential theft, defacement of wiki content, and the ability to perform actions on behalf of authenticated users. The vulnerability's persistence across multiple versions indicates a fundamental flaw in the application's security architecture that was not adequately addressed through standard code reviews or security testing processes. This type of vulnerability is particularly concerning in collaborative environments like wikis where multiple users interact with shared content, as it can enable attackers to manipulate information or compromise user accounts.
Organizations utilizing KonaWiki versions 3.1.0 or earlier face substantial operational risks due to CVE-2020-5613, as the vulnerability can be exploited by threat actors without requiring any specialized knowledge or access to internal systems. The attack surface is broad since the vulnerability is accessible through simple URL manipulation, making it an attractive target for automated exploitation tools and mass-distributed attacks. Security teams must consider the potential for cascading effects where a single compromised user session can lead to broader system access or data exfiltration. The vulnerability's exploitation can result in unauthorized content modification, unauthorized user account access, and potential data breaches that could affect both the application's integrity and its users' privacy. Organizations should implement immediate mitigations including input validation controls, output encoding, and proper URL parameter sanitization. The vulnerability also highlights the importance of maintaining up-to-date security practices and regular vulnerability assessments. Organizations can mitigate the risk by implementing web application firewalls, content security policies, and ensuring proper input validation at all application entry points. Additionally, the vulnerability underscores the necessity of secure coding practices and regular security training for development teams to prevent similar flaws in future releases. Regular security audits and penetration testing should be conducted to identify and remediate similar vulnerabilities before they can be exploited by malicious actors. The incident also emphasizes the need for proper security incident response procedures that can quickly identify and contain exploitation attempts while maintaining service availability and user trust in the application environment.