CVE-2022-2188 in DXL Broker
Summary
by MITRE • 11/07/2022
Privilege escalation vulnerability in DXL Broker for Windows prior to 6.0.0.280 allows local users to gain elevated privileges by exploiting weak directory controls in the logs directory. This can lead to a denial-of-service attack on the DXL Broker.
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Analysis
by VulDB Data Team • 12/05/2022
The CVE-2022-2188 vulnerability represents a critical privilege escalation flaw within the DXL Broker for Windows platform affecting versions prior to 6.0.0.280. This vulnerability resides in the broker's handling of directory permissions and access controls within the logs directory structure, creating a significant security risk for organizations relying on this messaging infrastructure. The vulnerability specifically targets local users who can exploit the weak directory controls to elevate their privileges from standard user level to administrative rights, fundamentally compromising the security posture of systems running affected versions of the DXL Broker.
The technical exploitation of this vulnerability stems from inadequate permission controls within the logs directory where the DXL Broker stores its operational data and log files. Attackers with local access can manipulate the directory structure or inject malicious code into the logging mechanisms, leveraging the insufficient access controls to gain elevated privileges. This weakness allows unauthorized local users to bypass normal security boundaries and potentially execute arbitrary code with higher privileges than originally intended. The vulnerability demonstrates poor adherence to the principle of least privilege and inadequate security hardening practices within the application's file system access controls, creating a pathway for privilege escalation that directly violates fundamental security principles.
The operational impact of this vulnerability extends beyond simple privilege escalation to encompass potential denial-of-service conditions within the DXL Broker infrastructure. When exploited successfully, attackers can not only gain elevated privileges but also potentially disrupt the normal operation of the messaging broker, leading to service interruptions that can affect critical communication channels within enterprise networks. The vulnerability affects organizations that depend on DXL Broker for secure messaging and event distribution, potentially compromising the integrity and availability of their communication infrastructure. This creates cascading effects where a single compromised local account can potentially lead to broader system compromise and service disruption.
Organizations should immediately implement mitigations including upgrading to DXL Broker version 6.0.0.280 or later, which contains the necessary security patches addressing the weak directory controls. System administrators should also review and harden the permissions on the logs directory, ensuring that only authorized processes have write access and that proper access control lists are implemented. Additionally, implementing monitoring solutions to detect unauthorized access attempts to the logs directory can provide early warning of potential exploitation attempts. The vulnerability aligns with CWE-276, which addresses incorrect permissions for critical resources, and maps to ATT&CK technique T1068, privilege escalation through local exploit. Organizations should conduct comprehensive security assessments of their DXL Broker deployments and implement regular security updates to prevent exploitation of similar vulnerabilities in their messaging infrastructure.