CVE-2019-11684 in Video Recording Manager
Summary
by MITRE • 02/26/2021
Improper Access Control in the RCP+ server of the Bosch Video Recording Manager (VRM) component allows arbitrary and unauthenticated access to a limited subset of certificates, stored in the underlying Microsoft Windows operating system. The fixed versions implement modified authentication checks. Prior releases of VRM software version 3.70 are considered unaffected. This vulnerability affects VRM v3.70.x, v3.71 < v3.71.0034 and v3.81 < 3.81.0050; DIVAR IP 5000 3.80 < 3.80.0039; BVMS all versions using VRM.
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Analysis
by VulDB Data Team • 03/05/2021
The vulnerability identified as CVE-2019-11684 represents a critical improper access control flaw within the RCP+ server component of Bosch Video Recording Manager software. This weakness specifically targets the authentication mechanisms that govern access to cryptographic certificates stored within the underlying Microsoft Windows operating system. The vulnerability allows attackers to gain unauthorized access to a limited subset of certificates without requiring authentication credentials, creating a significant security risk for video surveillance systems that rely on proper certificate management for secure communications and data integrity.
The technical implementation of this vulnerability stems from insufficient authentication checks within the RCP+ server module, which is part of the broader VRM ecosystem used for video recording management. According to CWE-284, this flaw falls under improper access control, where the system fails to properly enforce access restrictions on sensitive resources. The vulnerability specifically affects systems running VRM software versions 3.70.x through 3.71.0033 and 3.81.0049 and below, as well as DIVAR IP 5000 devices with firmware versions prior to 3.80.0039. The affected systems utilize Microsoft Windows as their underlying operating platform, which houses the certificates that are improperly accessible through this vulnerability.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it can potentially compromise the integrity and confidentiality of video surveillance data. Attackers who exploit this flaw can access certificate files that may contain sensitive cryptographic keys used for secure communications between video recording devices and management systems. This access could enable man-in-the-middle attacks, certificate forgery, or unauthorized system compromise, particularly when these certificates are used for device authentication or secure data transmission. The vulnerability's scope is limited to a subset of certificates, but even partial access to certificate stores can provide attackers with sufficient information to escalate their privileges or conduct sophisticated attacks against the surveillance infrastructure.
The remediation for this vulnerability requires upgrading to fixed versions of the VRM software, specifically those that implement modified authentication checks as mentioned in the advisory. Organizations should prioritize updating their VRM installations to versions 3.71.0034 or later, 3.81.0050 or later, or the appropriate DIVAR IP 5000 firmware versions that address this access control weakness. The fix addresses the root cause by strengthening the authentication mechanisms within the RCP+ server, ensuring that only authorized entities can access the certificate storage areas. Security teams should conduct comprehensive assessments of their video surveillance systems to identify all affected devices and ensure proper patching across their entire infrastructure. This vulnerability demonstrates the importance of proper access control implementation in networked security systems and aligns with ATT&CK technique T1566, which covers credential harvesting through various access control bypass methods. Organizations should also implement network segmentation and monitoring to detect any unauthorized access attempts to certificate stores, as the vulnerability could be exploited as part of broader attack campaigns targeting industrial control systems and security infrastructure.