CVE-2017-1671 in Tivoli Key Lifecycle Manager
Summary
by MITRE
IBM Tivoli Key Lifecycle Manager 2.5, 2.6, and 2.7 could allow a remote attacker to traverse directories on the system. An attacker could send a specially-crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system. IBM X-Force ID: 133638.
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Analysis
by VulDB Data Team • 01/29/2021
IBM Tivoli Key Lifecycle Manager versions 2.5, 2.6, and 2.7 contain a directory traversal vulnerability that allows remote attackers to access arbitrary files on the system through crafted URL requests containing dot dot sequences. This vulnerability represents a classic path traversal flaw that enables attackers to navigate beyond the intended directory structure and access sensitive system files. The flaw exists in the application's handling of user-supplied input in URL parameters, specifically failing to properly validate or sanitize directory paths before processing. When an attacker submits a request with sequences such as /../ or ../../, the application processes these paths without adequate restrictions, allowing access to files outside the designated web root or application directory. This vulnerability directly maps to CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as directory traversal or path traversal attacks. The security implications are significant as attackers can potentially access configuration files, source code, database files, or other sensitive information that should remain protected from unauthorized access. The vulnerability affects the web interface of the key lifecycle management system, making it exploitable over the network without requiring authentication. IBM X-Force ID 133638 indicates this was recognized as a critical issue within the security community. Attackers could leverage this vulnerability to gain insights into the system architecture, potentially leading to further exploitation opportunities. The impact extends beyond simple file access, as the compromised system may contain cryptographic keys, user credentials, or other sensitive data that could be used for additional attacks. Organizations using these vulnerable versions face risks of data exposure and potential system compromise. The vulnerability aligns with ATT&CK technique T1083 (File and Directory Discovery) and T1566 (Phishing with Malicious Attachment) as attackers might use directory traversal to discover system files or access attachments that contain sensitive information. The flaw demonstrates inadequate input validation and access control mechanisms within the application's web interface. Organizations should immediately apply the vendor-provided security patches or updates to address this vulnerability. Additionally, network segmentation, web application firewalls, and monitoring of suspicious URL patterns can provide additional layers of protection. The vulnerability highlights the importance of implementing proper input sanitization and access controls in web applications to prevent unauthorized file access. Regular security assessments and code reviews should focus on identifying similar path traversal vulnerabilities in other applications. System administrators should also implement least privilege principles and ensure that web applications run with minimal required permissions to limit potential damage from such exploits. The remediation process should include comprehensive testing to verify that directory traversal attempts are properly blocked while maintaining legitimate application functionality.