CVE-2006-1621 in Hosting Controller
Summary
by MITRE
Directory traversal vulnerability in admin/folders/saveuploadfiles.asp in Hosting Controller 2002 RC 1 allows remote authenticated users to overwrite arbitrary files via an absolute path in the OpenPath parameter.
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Analysis
by VulDB Data Team • 08/24/2017
The vulnerability identified as CVE-2006-1621 represents a critical directory traversal flaw within the Hosting Controller 2002 RC 1 web application management system. This issue resides in the admin/folders/saveuploadfiles.asp component which processes file upload operations for the hosting platform. The vulnerability specifically affects authenticated users who possess valid credentials to access the administrative interface, creating a scenario where legitimate users can exploit this weakness to gain unauthorized file system access. The flaw stems from inadequate input validation mechanisms that fail to properly sanitize user-supplied path information, particularly within the OpenPath parameter that controls file destination paths during upload operations.
The technical implementation of this vulnerability demonstrates a classic path traversal attack vector where the application accepts absolute file paths from user input without proper validation or sanitization. When an authenticated user submits a request containing an absolute path in the OpenPath parameter, the application processes this input directly without verifying whether the specified path falls within the intended directory structure. This allows malicious actors to manipulate the file system by specifying paths that point to arbitrary locations on the server, potentially enabling them to overwrite critical system files, configuration data, or other sensitive resources. The vulnerability operates under CWE-22 which classifies directory traversal issues as weaknesses in input validation that permit unauthorized access to restricted directories and files.
The operational impact of this vulnerability extends beyond simple file overwriting capabilities and represents a significant threat to system integrity and availability. An attacker who successfully exploits this vulnerability could potentially compromise the entire hosting environment by replacing critical system files with malicious counterparts, creating backdoors for persistent access, or corrupting essential configuration data that would render the hosting platform unusable. The authenticated nature of the attack means that the threat actor must already have valid credentials, but this requirement does not mitigate the severity of the potential damage since administrative accounts typically possess elevated privileges and access to critical system resources. This vulnerability aligns with ATT&CK technique T1059 which covers command and scripting interpreter usage, as attackers could leverage the ability to write arbitrary files to establish persistent access or deploy malicious payloads.
Mitigation strategies for CVE-2006-1621 should focus on implementing comprehensive input validation and sanitization measures within the affected application components. The primary remediation involves enforcing strict path validation that rejects absolute paths and ensures all file operations occur within designated safe directories. Organizations should implement proper access controls and privilege separation to limit the impact of potential exploitation, while also applying immediate patches or code modifications to address the directory traversal vulnerability. Security monitoring should be enhanced to detect suspicious file operations and unusual patterns in upload activities. Additionally, the hosting controller platform should be upgraded to newer versions that address this vulnerability, as the 2002 RC 1 release is outdated and likely contains additional unpatched security flaws. Network segmentation and firewall rules can help limit the exposure of administrative interfaces to reduce the attack surface. The vulnerability demonstrates the importance of proper input validation and the principle of least privilege in web application security, emphasizing that even authenticated users should not be permitted to perform arbitrary file system operations without proper authorization and validation mechanisms in place.