CVE-2018-7840 in OpsCenter
Summary
by MITRE
A Uncontrolled Search Path Element (CWE-427) vulnerability exists in VideoXpert OpsCenter versions prior to 3.1 which could allow an attacker to cause the system to call an incorrect DLL.
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Analysis
by VulDB Data Team • 09/23/2023
The vulnerability identified as CVE-2018-7840 represents a critical uncontrolled search path element flaw within VideoXpert OpsCenter software versions prior to 3.1. This type of vulnerability falls under CWE-427, which specifically addresses situations where software applications search for files or libraries using paths that are not properly controlled or validated. The vulnerability stems from the application's failure to properly sanitize or validate the search paths used when loading dynamic link libraries, creating a potential attack vector that could be exploited by malicious actors.
The technical implementation of this vulnerability allows an attacker to manipulate the software's library loading mechanism by placing malicious DLL files in directories that are searched before the legitimate system directories. When the VideoXpert OpsCenter application attempts to load required libraries, it follows a predetermined search order that includes user-accessible directories, which can be manipulated by an attacker. This creates an opportunity for privilege escalation and code execution attacks, as the system will load the attacker-controlled DLL instead of the legitimate one, potentially allowing for unauthorized access to the system.
The operational impact of this vulnerability extends beyond simple code execution, as it could enable attackers to gain elevated privileges within the VideoXpert environment. The vulnerability affects the core operational capabilities of the security management system, potentially compromising video surveillance operations and creating unauthorized access points. Organizations relying on VideoXpert OpsCenter for security monitoring could face significant risks including data breaches, system compromise, and disruption of critical security infrastructure. The vulnerability's impact is particularly concerning given that it affects the management console of a security system, potentially allowing attackers to undermine the very security controls the system is designed to provide.
Mitigation strategies for CVE-2018-7840 should focus on immediate software updates to version 3.1 or later, which contain the necessary patches to address the uncontrolled search path issue. Organizations should also implement proper directory permissions and access controls to limit where DLL files can be placed, ensuring that user-accessible directories are not included in the library search paths. Additionally, security monitoring should be enhanced to detect unusual library loading patterns and unauthorized DLL placements. The vulnerability aligns with ATT&CK technique T1059 which covers command and scripting interpreter, as attackers could leverage this vulnerability to execute malicious code through the compromised DLL loading mechanism. System administrators should also consider implementing application whitelisting policies and regular security assessments to prevent similar vulnerabilities from being exploited in other components of their security infrastructure.