CVE-2015-2071 in Samepage
Summary
by MITRE
Directory traversal vulnerability in cm/newui/blog/export.jsp in eTouch SamePage Enterprise Edition 4.4.0.0.239 allows remote authenticated users to read arbitrary files via a .. (dot dot) in the filepath parameter.
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Analysis
by VulDB Data Team • 01/18/2025
The vulnerability identified as CVE-2015-2071 represents a critical directory traversal flaw within the eTouch SamePage Enterprise Edition 4.4.0.0.239 web application. This security weakness exists in the cm/newui/blog/export.jsp component and specifically affects the filepath parameter handling mechanism. The vulnerability allows authenticated remote attackers to exploit the application's file handling routines by manipulating the filepath parameter with directory traversal sequences such as .. (dot dot) notation. This flaw fundamentally compromises the application's ability to properly validate and sanitize user input before processing file operations, creating a pathway for unauthorized file access that extends beyond the intended application boundaries.
The technical implementation of this vulnerability stems from inadequate input validation and sanitization within the export.jsp script. When the application processes the filepath parameter without proper restrictions or canonicalization checks, it fails to prevent attackers from navigating to arbitrary directories within the server's file system. The exploitation occurs through the manipulation of the .. sequence which, when processed by the application's file handling logic, allows attackers to traverse up directory levels and access files that should remain protected. This type of vulnerability falls under the CWE-22 category of Improper Limitation of a Pathname to a Restricted Directory, which is a well-documented weakness in web application security. The vulnerability specifically enables attackers to read arbitrary files on the server, potentially exposing sensitive information including configuration files, database credentials, application source code, and other confidential data stored on the system.
The operational impact of CVE-2015-2071 extends beyond simple unauthorized file access, as it provides attackers with a foothold for further exploitation within the enterprise environment. Successful exploitation could lead to information disclosure, privilege escalation, and potentially complete system compromise depending on the sensitivity of files accessible through the traversal mechanism. Attackers could leverage this vulnerability to access application configuration files that might contain database connection strings, API keys, or other sensitive credentials. The authenticated nature of the vulnerability means that attackers would need valid user credentials to exploit this flaw, but this requirement does not significantly mitigate the risk as compromised accounts or credential reuse attacks can easily provide the necessary access. This vulnerability directly aligns with ATT&CK technique T1083 (File and Directory Discovery) and T1566 (Phishing for Information) as it enables attackers to discover and extract sensitive files from the target system. The impact is particularly severe in enterprise environments where the SamePage application likely serves as a collaboration platform with access to business-critical information and documents.
Mitigation strategies for CVE-2015-2071 should focus on implementing robust input validation, output encoding, and proper access controls within the affected application. Organizations should immediately apply vendor patches or updates if available, as eTouch would have likely released a fix addressing this directory traversal vulnerability. The fundamental solution involves implementing strict input validation that prevents directory traversal sequences from being processed by the application's file handling routines. This can be achieved through the implementation of allow-list validation that only permits specific, safe file paths or through proper canonicalization of file paths to ensure that traversal sequences are neutralized before any file operations occur. Additionally, implementing proper file access controls and privilege separation can help limit the damage if such vulnerabilities are exploited. Security teams should also consider deploying web application firewalls that can detect and block directory traversal attempts, and conduct regular security assessments to identify similar vulnerabilities within the application's codebase. The remediation process should include comprehensive code reviews focusing on file handling routines and input validation mechanisms to prevent similar issues from occurring in other parts of the application or related systems.