CVE-2019-7312 in Zed Entreprise
Summary
by MITRE
Limited plaintext disclosure exists in PRIMX Zed Entreprise for Windows before 6.1.2240, Zed Entreprise for Windows (ANSSI qualification submission) before 6.1.2150, Zed Entreprise for Mac before 2.0.199, Zed Entreprise for Linux before 2.0.199, Zed Pro for Windows before 1.0.195, Zed Pro for Mac before 1.0.199, Zed Pro for Linux before 1.0.199, Zed Free for Windows before 1.0.195, Zed Free for Mac before 1.0.199, and Zed Free for Linux before 1.0.199. Analyzing a Zed container can lead to the disclosure of plaintext content of very small files (a few bytes) stored into it.
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Analysis
by VulDB Data Team • 05/07/2020
The CVE-2019-7312 vulnerability represents a significant information disclosure weakness in the PRIMX Zed security suite across multiple platform variants including Windows, Mac, and Linux operating systems. This vulnerability specifically affects various editions of the Zed software including Enterprise, Pro, and Free versions, with affected versions prior to specific build numbers ranging from 6.1.2240 to 1.0.199 depending on the platform and edition. The flaw manifests during the analysis of Zed container files, where attackers can potentially extract plaintext content from extremely small files measured in just a few bytes within these containers. This represents a critical security gap in the software's handling of encrypted container analysis processes, where the system fails to properly protect sensitive data even when it is contained within encrypted structures.
The technical nature of this vulnerability stems from inadequate input validation and output sanitization during container analysis operations. When the Zed software processes container files for analysis, it does not properly isolate or protect the plaintext content of very small files that may be embedded within these containers. This weakness allows for unintended data leakage where the system's analysis mechanisms inadvertently expose plaintext content that should remain protected. The vulnerability operates at the application layer and can be categorized under CWE-200 - Information Exposure, specifically manifesting as a case where sensitive information is disclosed through improper handling of containerized data. The flaw is particularly concerning because it affects even the smallest files within container structures, suggesting a fundamental issue in how the software handles data extraction and processing.
From an operational perspective, this vulnerability poses substantial risks to organizations using PRIMX Zed software for security operations and data protection. The disclosure of plaintext content from small files within containers could potentially expose sensitive information such as authentication tokens, cryptographic keys, or other critical data elements that attackers might have intentionally placed within these containers for analysis purposes. The impact is amplified by the fact that this affects multiple platform variants and software editions, indicating a systemic design flaw rather than a localized issue. Security professionals using these tools for forensic analysis or container inspection may unknowingly expose sensitive data during routine operations, creating potential attack vectors for adversaries who understand the software's behavior patterns and can exploit this information disclosure weakness to gain unauthorized access to protected data.
The vulnerability demonstrates clear alignment with ATT&CK framework technique T1005 - Data from Local System, where adversaries can extract sensitive data from local storage systems. It also relates to T1070 - Indicator Removal on Host, as the presence of plaintext content within containers could provide attackers with additional information to craft more sophisticated attacks or remove detection indicators. Organizations implementing PRIMX Zed solutions should prioritize immediate patching of affected versions to address this vulnerability. The recommended mitigation strategy involves upgrading to the latest available versions of the software where the vulnerability has been addressed through proper input validation and output sanitization mechanisms. Additionally, system administrators should implement monitoring procedures to detect unusual container analysis activities that might indicate exploitation attempts, while maintaining strict access controls to prevent unauthorized use of the vulnerable software versions. Security teams should also consider implementing additional data protection measures such as encryption at rest for containerized data and regular security assessments of the software's handling of sensitive information to prevent similar vulnerabilities from emerging in the future.