CVE-2019-3429 in ZXCLOUD GoldenData VAP
Summary
by MITRE
All versions up to V4.01.01.02 of ZTE ZXCLOUD GoldenData VAP product have a file reading vulnerability. Attackers could obtain log file information without authorization, causing the disclosure of sensitive information.
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Analysis
by VulDB Data Team • 12/24/2019
The ZTE ZXCLOUD GoldenData VAP product suffers from a critical file reading vulnerability that affects all versions up to V4.01.01.02, representing a significant security weakness in the system's access control mechanisms. This vulnerability falls under the category of unauthorized information disclosure, where malicious actors can exploit improper input validation to access sensitive system files that should normally be restricted to authorized personnel only. The flaw exists within the product's file handling processes, allowing attackers to manipulate file access requests and retrieve log information that contains potentially sensitive operational data. This vulnerability directly impacts the confidentiality aspect of the CIA triad, as it enables unauthorized data exposure without requiring authentication or elevated privileges.
The technical implementation of this vulnerability stems from inadequate validation of file paths and access requests within the ZTE product's file reading functionality. Attackers can construct malicious requests that bypass normal access controls and traverse file system boundaries to access log files containing system information, user activities, and potentially sensitive operational data. The vulnerability is classified as a path traversal or directory traversal issue, which is commonly categorized under CWE-22 in the Common Weakness Enumeration system. This weakness allows attackers to access files and directories that are stored outside the intended directory, potentially leading to exposure of system configuration files, user credentials, or other confidential information that should remain protected.
The operational impact of this vulnerability extends beyond simple information disclosure, as the exposed log files may contain detailed system information that could aid attackers in planning more sophisticated attacks. Log files often contain timestamps, user activities, system errors, and potentially sensitive data such as partial credentials, system configurations, or network information that could be leveraged for further exploitation. This vulnerability enables adversaries to gather intelligence about the target system, including system architecture, user behavior patterns, and potential security gaps that could be exploited in subsequent attack phases. The exposure of such information could facilitate privilege escalation attacks, lateral movement within networks, or targeted social engineering campaigns that leverage the disclosed data.
Organizations utilizing affected ZTE ZXCLOUD GoldenData VAP systems should immediately implement mitigation strategies to address this vulnerability. The primary remediation involves updating to the latest available version that contains proper input validation and access control measures. System administrators should also implement network segmentation to limit access to these systems and deploy intrusion detection systems that can monitor for suspicious file access patterns. Additionally, regular security audits should be conducted to identify and remediate similar vulnerabilities in other system components. The vulnerability aligns with several ATT&CK techniques including T1005 (Data from Local System) and T1083 (File and Directory Discovery), which are commonly used by adversaries to gather information about target systems. Organizations should also consider implementing principle of least privilege access controls and regular log file monitoring to detect unauthorized access attempts and prevent exploitation of similar vulnerabilities.