CVE-2024-31404 in Garoon
Summary
by MITRE • 06/11/2024
Insertion of sensitive information into sent data issue exists in Cybozu Garoon 5.5.0 to 6.0.0, which may allow a user who can log in to the product to view the data of Scheduler.
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Analysis
by VulDB Data Team • 05/29/2025
The vulnerability identified as CVE-2024-31404 represents a critical information disclosure flaw within Cybozu Garoon versions 5.5.0 through 6.0.0. This issue stems from improper handling of sensitive data within the Scheduler component, where authenticated users can potentially access data that should remain restricted to authorized personnel. The vulnerability manifests when sensitive information is inadvertently included in data transmission processes, creating an avenue for unauthorized data exposure. Such flaws typically arise from insufficient input validation and inadequate access control mechanisms within web applications. The affected system operates under the assumption that legitimate users can only access data pertinent to their roles, yet this vulnerability allows for privilege escalation through data leakage. The root cause can be attributed to poor data sanitization practices where sensitive fields are not properly filtered or encrypted before being transmitted to client applications. This type of vulnerability aligns with CWE-200, which categorizes issues related to improper information exposure, and represents a significant deviation from secure coding practices. The security implications extend beyond simple data leakage, as the exposed information could include personal details, business-sensitive data, or confidential scheduling information that could be exploited for further attacks.
The technical exploitation of this vulnerability requires an authenticated user session within the Garoon environment, which reduces the attack surface but does not eliminate the risk entirely. Attackers can leverage their legitimate access privileges to manipulate data transmission flows, potentially extracting sensitive information from the Scheduler module. The flaw operates at the application layer, specifically within the data handling mechanisms that process and transmit scheduling information. When users interact with the Scheduler component, the system fails to properly validate or sanitize data fields before sending them to connected clients, resulting in the inclusion of unauthorized data elements. This behavior creates a data leakage scenario where the transmission process inadvertently incorporates information that should be restricted. The vulnerability demonstrates weaknesses in the application's data flow control and access restriction implementation, where proper authorization checks do not adequately prevent data exposure. The impact is particularly concerning given that scheduling systems often contain sensitive business information, personal details, and operational data that could be valuable to adversaries. This flaw represents a classic example of insufficient data filtering and improper access control, which can be categorized under ATT&CK technique T1074.001 for data staging and T1566.001 for credential access through social engineering. The vulnerability can be exploited through manipulation of API calls or direct interaction with the Scheduler interface, where the system fails to enforce proper data access boundaries.
The operational impact of CVE-2024-31404 extends beyond immediate data exposure, creating long-term security implications for organizations relying on Cybozu Garoon for business operations. Organizations may experience regulatory compliance violations, particularly in industries governed by data protection regulations such as GDPR, HIPAA, or SOX, where unauthorized data disclosure can result in significant financial penalties. The vulnerability undermines the integrity of the system's access control mechanisms, potentially enabling attackers to gather intelligence about organizational structures, employee schedules, and business operations. This information can be used for targeted attacks, social engineering campaigns, or insider threat exploitation. The affected environment may also experience reputational damage as clients and stakeholders lose confidence in the organization's ability to protect sensitive information. Organizations should consider the cascading effects of this vulnerability, as compromised scheduling data could reveal patterns of business operations, key personnel availability, and resource allocation strategies that adversaries might exploit. The vulnerability's persistence across multiple versions of the software indicates a systemic issue within the development lifecycle, suggesting that similar flaws may exist in other components of the application. Security teams must also account for potential lateral movement opportunities that this vulnerability might provide, as attackers could use the exposed information to plan more sophisticated attacks against the broader network infrastructure.
Mitigation strategies for CVE-2024-31404 should prioritize immediate remediation through official patches provided by Cybozu, as this represents the most effective solution to address the root cause of the vulnerability. Organizations should implement comprehensive access control reviews to ensure that data transmission processes properly validate and sanitize information before sending it to client applications. Network segmentation and monitoring should be enhanced to detect anomalous data transmission patterns that might indicate exploitation attempts. The implementation of data loss prevention measures can help identify and block unauthorized data flows within the application environment. Security teams should conduct thorough vulnerability assessments to identify similar issues in other applications and components that may share similar data handling patterns. Regular security testing including penetration testing and code reviews should be performed to identify potential information disclosure vulnerabilities before they can be exploited. Additionally, organizations should establish robust incident response procedures that include monitoring for unauthorized data access patterns and establishing clear protocols for reporting and addressing information leakage incidents. The vulnerability highlights the importance of adhering to secure coding practices and implementing proper input validation, output encoding, and access control mechanisms throughout the application development lifecycle. Organizations should also consider implementing automated security scanning tools that can detect similar vulnerabilities in their software environments, particularly focusing on data transmission and access control mechanisms that are prone to information disclosure issues.