CVE-2013-6909 in Garoon
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in a report component in Cybozu Garoon before 3.7.0 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 03/02/2019
The CVE-2013-6909 vulnerability represents a critical cross-site scripting flaw discovered in the Cybozu Garoon platform's report component prior to version 3.7.0. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is one of the most prevalent and dangerous web application security weaknesses identified by the CWE organization. The vulnerability specifically affects the report generation functionality within the Garoon suite, which is commonly used for enterprise collaboration and workflow management. The affected component allows remote attackers to inject malicious web scripts or HTML content through unspecified vectors, creating a significant attack surface for potential exploitation.
The technical nature of this vulnerability stems from inadequate input validation and output encoding mechanisms within the report component's processing pipeline. When users generate reports containing user-supplied data, the application fails to properly sanitize or escape special characters that could be interpreted as HTML or JavaScript code. This insufficient sanitization creates an environment where malicious actors can craft specially formatted input that gets rendered as executable code within the browser context of unsuspecting users. The unspecified vectors suggest that multiple input points within the report component could serve as entry points for this attack, potentially including field names, report parameters, or data content itself.
The operational impact of CVE-2013-6909 is substantial for organizations utilizing Cybozu Garoon systems, particularly those in enterprise environments where sensitive business data is processed through report generation features. Successful exploitation could enable attackers to perform session hijacking, steal authentication credentials, redirect users to malicious websites, or execute arbitrary code within the victim's browser context. The vulnerability creates a persistent threat vector that could be exploited repeatedly, as any user with access to the report functionality could potentially inject malicious content. This risk is exacerbated in collaborative environments where multiple users interact with shared reports, as the malicious content could propagate to numerous users within the organization. Organizations relying on Garoon for critical business processes face potential data breaches, unauthorized access, and compromise of business continuity.
Organizations should immediately implement multiple layers of defense to mitigate this vulnerability, beginning with the mandatory upgrade to Cybozu Garoon version 3.7.0 or later, which contains the appropriate security patches. Additionally, administrators should implement strict input validation and output encoding policies for all report generation features, ensuring that user-supplied data undergoes thorough sanitization before being processed or displayed. Network-based mitigations such as web application firewalls can provide additional protection by monitoring for suspicious script injection patterns, though these should not be considered a substitute for proper application-level fixes. The remediation process should also include comprehensive security testing of all report components, including penetration testing and code review activities that specifically target XSS vulnerabilities. Organizations should also consider implementing content security policies to limit the execution of unauthorized scripts and establish monitoring procedures to detect potential exploitation attempts. From an ATT&CK framework perspective, this vulnerability aligns with techniques such as T1059.001 (Command and Scripting Interpreter: PowerShell) and T1566.001 (Phishing: Spearphishing Attachment) as attackers may leverage this vulnerability to deliver malicious payloads through compromised reports.