CVE-2022-29487 in Office
Summary
by MITRE • 08/18/2022
Cross-site scripting vulnerability in Cybozu Office 10.0.0 to 10.8.5 allows a remote attacker to inject an arbitrary script via unspecified vectors.
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Analysis
by VulDB Data Team • 09/18/2022
The cross-site scripting vulnerability identified as CVE-2022-29487 affects Cybozu Office versions 10.0.0 through 10.8.5, representing a critical security flaw that enables remote attackers to execute malicious scripts within the context of affected web applications. This vulnerability falls under the category of CWE-79 - Improper Neutralization of Input During Web Page Generation, which specifically addresses the failure to properly sanitize user input before incorporating it into web pages. The flaw exists in the application's handling of unspecified input vectors, suggesting that multiple entry points within the software architecture may be susceptible to injection attacks.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding mechanisms within the Cybozu Office web interface. When user-supplied data is processed and rendered without proper sanitization, attackers can craft malicious payloads that execute within the browser context of legitimate users. The unspecified vectors indicate that the vulnerability may manifest through various input fields, parameters, or API endpoints, making the attack surface broader than typical XSS vulnerabilities that target specific input points. This characteristic aligns with ATT&CK technique T1059.001 - Command and Scripting Interpreter: PowerShell, where attackers leverage web-based interfaces to execute malicious code.
The operational impact of this vulnerability is severe as it allows attackers to perform session hijacking, steal user credentials, redirect victims to malicious websites, or execute arbitrary commands within the application context. Remote exploitation requires no authentication, making it particularly dangerous as attackers can leverage this flaw from any network location to compromise user sessions and potentially gain access to sensitive corporate data. The vulnerability could enable attackers to escalate privileges, access restricted functionalities, and compromise the confidentiality, integrity, and availability of the affected systems.
Mitigation strategies should prioritize immediate patching of affected Cybozu Office installations to version 10.8.6 or later, which contains the necessary security fixes. Organizations should implement comprehensive input validation and output encoding mechanisms across all web application components, following OWASP recommendations for XSS prevention. Network segmentation and web application firewalls can provide additional defense-in-depth layers to detect and block malicious payloads. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other applications within the organization's attack surface. Security monitoring should include detection of suspicious script injections and anomalous user behavior patterns that may indicate exploitation attempts. The vulnerability demonstrates the critical importance of maintaining up-to-date software versions and implementing robust security practices to protect against persistent threats in enterprise environments.