CVE-2018-4139

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Published: 03/04/2018 Updated: 07/03/2019

CVSS v2 Base Score: 9.3 | Impact Score: 10 | Exploitability Score: 8.6

CVSS v3 Base Score: 7.8 | Impact Score: 5.9 | Exploitability Score: 1.8

VMScore: 935

Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C

An issue exists in certain Apple products. macOS prior to 10.13.4 is affected. The issue involves the "kext tools" component. It allows malicious users to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.

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Here's a kextd method exposed via MIG (comappleKernelExtensionServer) kern_return_t _kextmanager_unlock_kextload( mach_port_t server, mach_port_t client) { kern_return_t mig_result = KERN_FAILURE; if (gClientUID != 0) { OSKextLog(/* kext */ NULL, kOSKextLogErrorLevel | kOSKextLogIPCFlag, ...

CWE-119 https://support.apple.com/HT208692 http://www.securitytracker.com/id/1040608 http://www.securityfocus.com/bid/103582 https://www.exploit-db.com/exploits/44561/https://nvd.nist.gov https://www.exploit-db.com/exploits/44561/

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CVE-2018-4139

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