CVE-2024-49097 in Windows
Summary
by MITRE • 12/12/2024
Windows PrintWorkflowUserSvc Elevation of Privilege Vulnerability
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Analysis
by VulDB Data Team • 01/08/2025
This vulnerability exists in the Windows PrintWorkflowUserSvc component which handles print job processing and workflow management within the Windows operating system. The flaw allows for privilege escalation from standard user context to system-level privileges through improper access control mechanisms. The vulnerability specifically affects the PrintWorkflowUserSvc service that runs with elevated privileges to manage print operations and workflow processes. Attackers can exploit this weakness by manipulating print job submissions or workflow configurations to execute malicious code with system-level permissions. The issue stems from insufficient validation of user inputs and inadequate privilege separation between the user service and underlying system components. This represents a critical security gap in Windows print management infrastructure that could be leveraged by adversaries to gain unauthorized system access. The vulnerability impacts all supported Windows versions including Windows 10 and Windows 11, making it particularly concerning for enterprise environments where print services are commonly utilized. The flaw enables attackers to bypass standard user restrictions and potentially establish persistent access to target systems.
The technical implementation of this privilege escalation vulnerability involves the PrintWorkflowUserSvc service failing to properly validate input parameters when processing print jobs or workflow configurations. When a user submits a print job or workflow request, the service processes these inputs without sufficient sanitization or privilege checks, allowing malicious payloads to be executed with elevated permissions. The vulnerability manifests when the service handles specific print job parameters or workflow directives that trigger code execution paths with system-level privileges. This represents a classic improper access control issue where service components do not properly enforce privilege boundaries. The flaw can be exploited through various attack vectors including malicious print job submissions, crafted workflow configurations, or by leveraging existing print service functionality to manipulate the service behavior. The service's failure to validate input parameters creates an opportunity for attackers to inject malicious code that executes with elevated privileges. This vulnerability directly aligns with CWE-276, which addresses improper privilege management, and represents a significant deviation from secure coding practices in Windows print subsystem components.
The operational impact of this vulnerability extends beyond simple privilege escalation to encompass potential system compromise and persistent access capabilities. Once exploited, attackers can execute arbitrary code with system-level privileges, potentially leading to complete system takeover. The vulnerability enables adversaries to install backdoors, modify system files, or establish persistent access mechanisms that survive system reboots. Print services are commonly enabled and accessible in enterprise environments, making this vulnerability particularly attractive to threat actors seeking low-hanging fruit. The impact is amplified in environments where print services are heavily utilized or where users have administrative access to print management interfaces. Attackers can leverage this vulnerability to establish footholds within networks, escalate privileges across multiple systems, or conduct reconnaissance activities using the elevated privileges. The vulnerability also poses risks to data integrity and confidentiality as attackers can access sensitive print jobs or system resources. Additionally, the exploitation may go undetected for extended periods due to the legitimate nature of print service usage and the complexity of monitoring print-related privilege escalations.
Mitigation strategies for this vulnerability should focus on immediate patching and administrative controls to reduce exploitation risk. Microsoft has released security updates addressing this specific vulnerability, and organizations should prioritize deployment of the latest security patches. System administrators should implement the principle of least privilege by restricting access to print services and workflow configurations to only necessary personnel. Network segmentation can help limit the impact of successful exploitation by isolating print services from critical system components. Monitoring and logging of print service activities should be enhanced to detect anomalous print job submissions or workflow configurations. The implementation of application whitelisting policies can prevent unauthorized execution of malicious code through print service interfaces. Regular security assessments should include evaluation of print service configurations and privilege settings. Organizations should also consider disabling unnecessary print service features and implementing strict input validation for print job parameters. Security teams should monitor for indicators of compromise related to print service exploitation and maintain updated threat intelligence on similar vulnerabilities. The remediation approach should include both immediate patch deployment and long-term security hardening of print service configurations to prevent similar issues in the future.