CVE-2024-44189 in macOS
Summary
by MITRE • 09/17/2024
The issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15. A logic issue existed where a process may be able to capture screen contents without user consent.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 09/24/2024
The vulnerability identified as CVE-2024-44189 represents a significant security flaw in macOS operating systems that allowed unauthorized screen capture operations. This logic issue existed within the system's permission handling mechanisms, creating a scenario where malicious processes could potentially access and capture screen contents without obtaining proper user consent. The flaw specifically impacted the underlying security model that governs how applications interact with screen capture functionality, undermining the fundamental principle of user consent in privacy-sensitive operations. The vulnerability demonstrates a critical weakness in the operating system's access control implementation and represents a failure in proper privilege validation.
The technical nature of this vulnerability stems from inadequate validation of process permissions when attempting screen capture operations. According to CWE-613, this issue manifests as insufficient validation of access control mechanisms, allowing processes to bypass normal user consent requirements. The flaw operates at the system level where legitimate applications and potentially malicious software could exploit a gap in the permission checking framework to capture screen contents. This represents a classic case of insufficient authorization checks where the system fails to properly verify whether a requesting process has adequate privileges to perform screen capture operations. The vulnerability essentially creates a backdoor through which unauthorized access to screen data can occur, potentially exposing sensitive information displayed on the user's screen.
The operational impact of CVE-2024-44189 extends beyond simple privacy concerns to encompass broader security implications for macOS users. Attackers could leverage this vulnerability to capture sensitive information including passwords, personal data, financial information, and confidential communications without user knowledge. The attack vector aligns with techniques described in the MITRE ATT&CK framework under T1113 - Screen Capture, where adversaries collect information from the user's screen to gain access to sensitive data. This vulnerability particularly affects users who may be running untrusted software or who have been compromised through other attack vectors, as the flaw allows for covert screen capture operations that could go undetected for extended periods. The impact is amplified by the fact that screen capture operations are often used in conjunction with other reconnaissance and data exfiltration techniques.
The fix for this vulnerability, implemented in macOS Sequoia 15, addresses the root cause through enhanced permission validation checks. The solution involves strengthening the access control mechanisms that govern screen capture operations, ensuring that all processes must properly authenticate and obtain explicit user consent before capturing screen contents. This remediation follows established security practices for addressing access control vulnerabilities and aligns with industry standards for secure application development. The updated implementation likely includes additional verification steps in the kernel-level processes that handle screen capture requests, ensuring that proper privilege checks occur before any screen capture operations are permitted. Organizations should prioritize updating to macOS Sequoia 15 to mitigate this vulnerability and protect against potential exploitation attempts. The fix represents a comprehensive approach to addressing the logic flaw by implementing proper access control validation that prevents unauthorized screen capture operations while maintaining legitimate functionality for authorized applications.