CVE-2007-0883 in IP3 NetAccess
Summary
by MITRE
Directory traversal vulnerability in portalgroups/portalgroups/getfile.cgi in IP3 NetAccess before firmware 4.1.9.6 allows remote attackers to read arbitrary files via a .. (dot dot) in the filename parameter.
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Analysis
by VulDB Data Team • 08/23/2024
The vulnerability identified as CVE-2007-0883 represents a critical directory traversal flaw within the IP3 NetAccess system, specifically affecting firmware versions prior to 4.1.9.6. This issue resides in the portalgroups/getfile.cgi component of the web interface, which processes file requests from remote clients. The vulnerability stems from inadequate input validation mechanisms that fail to properly sanitize user-supplied filename parameters, allowing malicious actors to manipulate file paths through directory traversal sequences.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious request containing .. (dot dot) sequences within the filename parameter passed to the getfile.cgi script. This manipulation enables the application to traverse directories beyond its intended scope, potentially accessing sensitive system files, configuration data, or other restricted resources. The flaw directly maps to CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. The vulnerability allows attackers to bypass normal access controls and retrieve files that should remain protected within the system's file hierarchy.
From an operational perspective, this vulnerability poses significant risks to network security and data integrity. Remote attackers can leverage this weakness to access critical system information, including but not limited to configuration files, user credentials, system logs, and potentially sensitive business data. The impact extends beyond simple information disclosure, as access to certain system files may enable further exploitation or privilege escalation within the affected environment. This vulnerability particularly affects organizations using IP3 NetAccess systems in network infrastructure roles, where unauthorized access to system files could compromise entire network segments.
The attack vector for this vulnerability is straightforward and requires minimal technical expertise, making it particularly dangerous in environments where network security controls may be insufficient. The vulnerability aligns with ATT&CK technique T1083, which covers directory and file permissions enumeration, as attackers can systematically explore the file system to identify valuable targets. Organizations should implement immediate mitigations including firmware updates to version 4.1.9.6 or later, which contain proper input validation and path sanitization measures. Additionally, network segmentation, web application firewalls, and access control restrictions should be deployed to limit potential exposure. Regular security audits and vulnerability assessments should be conducted to identify similar weaknesses in other network components and ensure comprehensive protection against directory traversal attacks.