CVE-2014-8419 in CodeMeter Runtime
Summary
by MITRE
Wibu-Systems CodeMeter Runtime before 5.20 uses weak permissions (read and write access for all users) for codemeter.exe, which allows local users to gain privileges via a Trojan horse file.
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Analysis
by VulDB Data Team • 04/04/2022
The vulnerability described in CVE-2014-8419 represents a critical privilege escalation issue within the Wibu-Systems CodeMeter Runtime software ecosystem. This vulnerability specifically affects versions prior to 5.20 and stems from the improper configuration of file permissions for the codemeter.exe executable. The flaw manifests through the use of weak permissions that grant read and write access to all users on the system, creating an exploitable condition that can be leveraged by malicious actors.
The technical implementation of this vulnerability involves the manipulation of the codemeter.exe file through a Trojan horse attack vector. When the CodeMeter Runtime service executes, it does so with elevated privileges due to the weak file permissions that allow any user to modify the executable. This creates a scenario where a local attacker can replace the legitimate codemeter.exe file with a malicious version that executes with the same elevated privileges as the legitimate service, effectively allowing privilege escalation from standard user level to system level access.
The operational impact of this vulnerability extends beyond simple privilege escalation as it provides attackers with persistent access to the compromised system. The weak permissions create a persistent backdoor mechanism where attackers can maintain control over the system even after initial access is gained. This vulnerability is particularly concerning because it operates at the system level and can be exploited without requiring network connectivity or specific external attack vectors. The flaw directly relates to CWE-276, which addresses improper file permissions, and represents a classic example of inadequate access control implementation within system services.
From an attack perspective, this vulnerability aligns with several ATT&CK techniques including privilege escalation through service binary replacement and persistence mechanisms. The exploitation process requires minimal sophistication as it relies on basic file system manipulation rather than complex attack chains. However, the impact is significant as it can be used to establish long-term system compromise and potentially spread to other systems within the network. The vulnerability demonstrates the importance of proper privilege separation and the principle of least privilege in system design, where system services should never be granted unnecessary permissions that could be exploited.
Organizations should implement immediate mitigations including updating to CodeMeter Runtime version 5.20 or later, which addresses the weak permission issue through proper access control implementation. Additionally, system administrators should conduct thorough permission audits of critical system executables and implement monitoring for unauthorized file modifications. The vulnerability highlights the necessity of regular security assessments and patch management processes to prevent exploitation of known weaknesses in widely deployed software components. Security teams should also consider implementing application control measures that prevent unauthorized modification of critical system files and services.