CVE-2016-1223 in Office Scan
Summary
by MITRE
Directory traversal vulnerability in Trend Micro Office Scan 11.0, Worry-Free Business Security Service 5.x, and Worry-Free Business Security 9.0 allows remote attackers to read arbitrary files via unspecified vectors.
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Analysis
by VulDB Data Team • 01/30/2019
The vulnerability identified as CVE-2016-1223 represents a critical directory traversal flaw affecting Trend Micro Office Scan 11.0 and various versions of Worry-Free Business Security services. This weakness enables remote attackers to access arbitrary files on affected systems through unspecified attack vectors, potentially compromising sensitive data and system integrity. The vulnerability stems from inadequate input validation mechanisms within the affected software components, allowing malicious actors to manipulate file access requests and bypass normal security restrictions. Such directory traversal vulnerabilities are particularly dangerous as they can provide attackers with unauthorized access to critical system files, configuration data, and user information stored on the targeted servers. The impact extends beyond simple file access, as successful exploitation could lead to privilege escalation, data exfiltration, and potential system compromise. This vulnerability affects enterprise security solutions that are widely deployed in business environments, making it an attractive target for threat actors seeking to gain unauthorized access to corporate networks. The unspecified nature of the attack vectors suggests multiple potential entry points within the affected software architecture, increasing the attack surface and complicating remediation efforts.
The technical implementation of this directory traversal vulnerability resides in the improper handling of file path requests within Trend Micro's security software. Attackers can exploit this weakness by crafting malicious requests that manipulate directory navigation sequences, such as using double dots and forward slashes to traverse directories beyond the intended access scope. This flaw typically occurs when the application fails to properly sanitize user-supplied input before processing file operations, allowing path traversal sequences to be interpreted literally rather than being neutralized or validated. The vulnerability operates at the application layer and can be exploited through network-based attacks without requiring local system access or authentication credentials. According to CWE classification, this represents a variant of CWE-22: Improper Limitation of a Pathname to a Restricted Directory, which is a fundamental security weakness in file system access controls. The attack methodology aligns with common exploitation patterns documented in the MITRE ATT&CK framework under techniques such as T1059 Command and Scripting Interpreter and T1566 Phishing, where attackers leverage application vulnerabilities to gain unauthorized access to system resources.
The operational impact of CVE-2016-1223 extends significantly beyond immediate data theft capabilities, as it can facilitate broader compromise of enterprise security infrastructures. Organizations running affected Trend Micro solutions face potential exposure of sensitive corporate data, including user credentials, system configurations, and business-critical information stored in accessible directories. The vulnerability's remote exploitability means that attackers can target these systems from external networks without requiring physical access or insider knowledge, making the attack surface extremely broad. Security administrators must consider the potential for privilege escalation and lateral movement within networks once initial access is achieved, as the compromised systems may contain additional sensitive resources. The widespread deployment of Trend Micro security products across enterprise environments increases the potential impact, as a single vulnerable system can serve as a foothold for broader network infiltration. Organizations may also face regulatory compliance issues if sensitive data is accessed or exfiltrated through this vulnerability, particularly in industries with strict data protection requirements such as healthcare, finance, or government sectors.
Mitigation strategies for CVE-2016-1223 should prioritize immediate patching of affected systems with vendor-provided security updates, as Trend Micro released specific fixes addressing this directory traversal vulnerability. Organizations should implement network segmentation and access controls to limit exposure of vulnerable systems to external threats, while also conducting thorough vulnerability assessments to identify any other potentially affected components within their security infrastructure. Security monitoring should be enhanced to detect unusual file access patterns or attempts to traverse directory structures that could indicate exploitation attempts. System administrators should review and restrict file access permissions on affected systems, implementing principle of least privilege controls to minimize the impact of successful attacks. Network-based intrusion detection systems should be configured to alert on suspicious requests that attempt to manipulate file paths or access restricted directories, providing early warning capabilities for potential exploitation attempts. Additionally, organizations should consider implementing web application firewalls to filter and validate requests before they reach vulnerable applications, creating an additional layer of protection against directory traversal attacks. Regular security assessments and penetration testing should be conducted to verify that mitigations are effective and to identify any additional vulnerabilities that may exist within the security infrastructure. The remediation process should also include comprehensive testing of patches in controlled environments before widespread deployment to ensure compatibility with existing security configurations and prevent potential service disruptions.