CVE-2018-12989 in VUE Certiport Console
Summary
by MITRE
The report-viewing feature in Pearson VUE Certiport Console 8 and IQSystem 7 before 2018-06-26 mishandles child processes and consequently launches Internet Explorer or Microsoft Edge as Administrator, which allows local users to gain privileges.
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Analysis
by VulDB Data Team • 03/13/2020
The vulnerability identified as CVE-2018-12989 resides within the report-viewing functionality of Pearson VUE Certiport Console 8 and IQSystem 7 software versions prior to the 2018-06-26 patch release. This issue represents a critical privilege escalation flaw that directly impacts the security posture of systems running these applications. The vulnerability stems from improper handling of child processes within the application's architecture, creating an exploitable condition that allows local attackers to elevate their privileges from standard user level to administrative rights. This type of vulnerability falls under the CWE-787 weakness category, which specifically addresses out-of-bounds writes that can lead to privilege escalation through improper process management.
The technical mechanism behind this vulnerability involves the application's report-viewing component failing to properly validate or control the execution context of child processes it spawns. When users interact with report viewing features, the system creates subprocesses that inadvertently launch Internet Explorer or Microsoft Edge with elevated administrative privileges. This misconfiguration occurs because the application does not properly implement security controls such as process isolation or privilege separation during child process creation. The flaw essentially allows any local user to trigger the execution of privileged browser processes without proper authentication or authorization checks, creating an attack vector that bypasses standard user access controls.
From an operational impact perspective, this vulnerability presents a significant risk to organizations relying on Pearson VUE Certiport systems for exam administration and reporting. Local users who might otherwise have limited system access can exploit this flaw to gain full administrative privileges, potentially allowing them to modify system configurations, access sensitive data, install malicious software, or compromise the integrity of the entire exam administration environment. The attack surface is particularly concerning in educational institutions or testing centers where multiple users may have access to the same systems, as a single compromised user account could lead to widespread system compromise. This vulnerability directly aligns with ATT&CK technique T1068, which covers local privilege escalation through process injection and privilege manipulation.
Organizations should implement immediate mitigations including applying the vendor-provided patch released on 2018-06-26, which addresses the improper child process handling mechanism. System administrators should also consider implementing additional security controls such as restricting local user privileges, monitoring for unauthorized browser process launches, and deploying application whitelisting solutions to prevent unauthorized execution of privileged processes. The vulnerability demonstrates the importance of proper process isolation and privilege separation in security-critical applications, particularly those handling sensitive data or providing administrative functions. Organizations should also conduct thorough security assessments of similar applications to identify potential process management flaws that could lead to similar privilege escalation vulnerabilities, as this type of issue frequently occurs in complex enterprise applications where multiple processes interact with system resources.