CVE-2020-5585 in Garoon
Summary
by MITRE
Cross-site scripting vulnerability in Cybozu Garoon 5.0.0 to 5.0.1 allows attacker with administrator rights to inject an arbitrary script via unspecified vectors.
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Analysis
by VulDB Data Team • 06/30/2020
The vulnerability identified as CVE-2020-5585 represents a critical cross-site scripting flaw within Cybozu Garoon versions 5.0.0 through 5.0.1. This vulnerability specifically targets the web application's input validation mechanisms, creating a pathway for malicious code injection that can compromise user sessions and data integrity. The flaw exists in the application's handling of user-supplied data within administrative interfaces, where proper sanitization and validation processes are insufficient to prevent malicious script execution. This vulnerability is particularly concerning as it requires only administrative privileges to exploit, meaning that an attacker who has gained administrative access can leverage this weakness to execute arbitrary scripts across user sessions.
The technical nature of this vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws in web applications. The vulnerability operates through unspecified vectors that likely involve the processing of user input within administrative forms or configuration interfaces. When administrators interact with these interfaces, the application fails to properly encode or validate data before rendering it back to users, creating an environment where malicious scripts can be executed in the context of other users' browsers. This type of vulnerability enables attackers to hijack user sessions, steal sensitive information, modify data, or perform unauthorized actions on behalf of legitimate users.
The operational impact of this vulnerability extends beyond simple script injection as it provides attackers with persistent access to administrative functions within the Garoon environment. Once exploited, the malicious scripts can be used to establish backdoors, exfiltrate sensitive data, or manipulate the application's functionality in ways that can compromise entire organizational systems. The vulnerability's exploitation requires only administrative privileges, which significantly reduces the attack surface and makes it particularly dangerous for organizations that maintain administrative accounts with broad system access. This weakness can lead to complete system compromise when combined with other vulnerabilities or through social engineering attacks that gain administrative credentials.
Organizations affected by this vulnerability should implement immediate mitigations including applying the vendor-provided patches and updates, implementing additional input validation measures, and conducting comprehensive security assessments of administrative interfaces. Network segmentation and monitoring solutions should be deployed to detect potential exploitation attempts, while security awareness training should emphasize the importance of maintaining administrative account security. The vulnerability also highlights the necessity of following secure coding practices and implementing robust input validation mechanisms that align with industry standards such as those defined in the OWASP Top Ten. Regular security audits and penetration testing should be conducted to identify similar weaknesses in other applications and ensure that proper security controls are in place to prevent unauthorized access and script injection attacks.