CVE-2007-1775 in JBrowser
Summary
by MITRE
Unrestricted file upload vulnerability in upload.php3 in JBrowser 2.4 and earlier allows remote attackers to upload and execute arbitrary PHP code via unspecified vectors. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
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Analysis
by VulDB Data Team • 08/28/2018
The vulnerability identified as CVE-2007-1775 represents a critical unrestricted file upload flaw within JBrowser version 2.4 and earlier, specifically affecting the upload.php3 component. This vulnerability creates a pathway for remote attackers to bypass security controls and execute malicious code on affected systems. The flaw stems from inadequate input validation and sanitization mechanisms that fail to properly restrict file types and content during the upload process, allowing attackers to upload potentially harmful files with executable code.
The technical implementation of this vulnerability falls under the category of unrestricted file upload as defined by CWE-434, which occurs when applications allow users to upload files without proper validation of file type, content, or destination. In the context of JBrowser, the upload.php3 script lacks sufficient security controls to verify that uploaded files conform to expected formats and do not contain malicious payloads. Attackers can exploit this weakness by crafting specially formatted files that appear to be legitimate uploads but actually contain PHP code designed to execute arbitrary commands on the target server. The unspecified vectors mentioned in the description suggest that multiple attack pathways may exist, potentially including different file extensions, encoding methods, or bypass techniques that could circumvent basic security checks.
From an operational impact perspective, this vulnerability poses severe risks to affected systems as it enables remote code execution capabilities for attackers. Successful exploitation allows adversaries to gain unauthorized access to the server environment, potentially leading to complete system compromise, data theft, or use as a pivot point for further attacks within the network infrastructure. The vulnerability affects the integrity and confidentiality of the system, as attackers can execute arbitrary commands with the privileges of the web application, potentially escalating to system-level access. Organizations using JBrowser 2.4 or earlier versions face significant exposure to cyber threats, as this vulnerability can be exploited without requiring authentication or specialized knowledge of the system architecture.
Security mitigations for CVE-2007-1775 should focus on implementing robust file validation mechanisms and restricting upload capabilities to prevent malicious file execution. Organizations should immediately upgrade to patched versions of JBrowser or implement compensating controls such as strict file type validation, content inspection, and proper file handling procedures. The mitigation strategy should include implementing the principle of least privilege for upload directories, using random file names to prevent path traversal attacks, and implementing proper access controls for uploaded files. Additionally, security measures should align with ATT&CK framework techniques related to command and control operations and privilege escalation, ensuring that uploaded files cannot be executed directly and that proper sandboxing or execution environments are implemented to contain potential malicious activities. Regular security assessments and input validation testing should be conducted to identify and remediate similar vulnerabilities in other applications within the organization's infrastructure.