CVE-2013-6913 in Garoon
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in a search component in Cybozu Garoon before 3.7.2, when Internet Explorer is used, allows remote authenticated users to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 03/02/2019
The CVE-2013-6913 vulnerability represents a critical cross-site scripting flaw discovered in Cybozu Garoon versions prior to 3.7.2, specifically affecting users operating within Internet Explorer environments. This vulnerability resides within the search component of the application, making it particularly concerning given the widespread use of Internet Explorer in enterprise settings. The flaw enables authenticated attackers to execute malicious web scripts or HTML code within the context of other users' sessions, potentially leading to unauthorized data access, session hijacking, or further exploitation of the compromised system. The vulnerability's impact is amplified by the fact that it specifically targets Internet Explorer, which has historically been more susceptible to certain types of XSS attacks due to its rendering engine characteristics and less stringent security policies compared to modern browsers.
The technical nature of this vulnerability falls under CWE-79, which categorizes cross-site scripting as a code injection flaw occurring when untrusted data is incorporated into web pages without proper validation or encoding. The vulnerability's exploitation requires an authenticated user context, meaning attackers must first obtain valid credentials to the Garoon system before attempting to leverage this flaw. The unspecified vectors suggest that the vulnerability could be triggered through various input fields within the search functionality, potentially including search queries, filter parameters, or other user-controllable inputs that are not properly sanitized before being rendered back to users. This ambiguity in the attack vectors makes the vulnerability particularly dangerous as it could be exploited through multiple entry points within the application's search functionality.
The operational impact of CVE-2013-6913 extends beyond simple data theft or session manipulation, as authenticated XSS attacks can enable attackers to perform actions with the privileges of the victim user. In enterprise environments utilizing Cybozu Garoon for collaboration and document management, this vulnerability could allow attackers to access sensitive business information, modify or delete critical data, or even escalate their privileges within the system. The fact that the vulnerability is specific to Internet Explorer usage creates additional operational challenges for security teams, as they must account for different browser behaviors and implement browser-specific mitigations. Organizations using this software may face compliance issues with security standards such as iso 27001 or pci dss, which require robust protection against injection attacks and proper input validation.
Mitigation strategies for this vulnerability should focus on immediate patching of affected systems to version 3.7.2 or later, which would address the underlying sanitization issues in the search component. Security teams should implement comprehensive input validation and output encoding mechanisms across all user-controllable inputs within the application, particularly those related to search functionality. Additional protective measures include implementing content security policies that restrict script execution and establishing proper security headers to prevent XSS exploitation. Organizations should also conduct thorough security assessments of their web applications to identify similar vulnerabilities in other components and ensure that their security monitoring systems can detect potential exploitation attempts. The vulnerability demonstrates the importance of maintaining up-to-date software versions and implementing defense-in-depth strategies that protect against multiple attack vectors as outlined in the mitre attack framework, particularly focusing on initial access and execution phases where such vulnerabilities can be leveraged by threat actors.