CVE-2019-8837: 
macOS vulnerability analysis and mitigation

CVE-2019-8837 is a security vulnerability discovered in Apple's macOS operating systems. The vulnerability was disclosed and patched on December 10, 2019, affecting macOS Catalina 10.15, Mojave 10.14.6, and High Sierra 10.13.6. It was identified as a logic issue in the ATS (Apple Transport Security) component that could allow a malicious application to access restricted files (Apple Advisory).

The vulnerability was characterized as a logic issue in the ATS component that was addressed with improved restrictions. The vulnerability has a CVSS v3.1 Base Score of 7.8 (HIGH) with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating local access, low attack complexity, no privileges required, and user interaction required (NVD).

The vulnerability could allow a malicious application to access restricted files, potentially compromising the confidentiality and integrity of sensitive data on affected systems (Apple Advisory).

The vulnerability requires local access and user interaction to be exploited. No public exploits or active exploitation in the wild have been reported (NVD).

Apple addressed this vulnerability by releasing security updates: macOS Catalina 10.15.2, Security Update 2019-002 Mojave, and Security Update 2019-007 High Sierra. Users are advised to update their systems to these versions to mitigate the vulnerability (Apple Advisory).

The vulnerability was discovered and reported by security researcher Csaba Fitzl (@theevilbit) (Apple Advisory).