Published: 02/04/2021 Updated: 04/05/2021

CVSS v2 Base Score: 7.6 | Impact Score: 10 | Exploitability Score: 4.9

CVSS v3 Base Score: 7 | Impact Score: 5.9 | Exploitability Score: 1

VMScore: 676

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

This vulnerability allows local malicious users to escalate privileges on affected installations of Apple macOS. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the AppleIntelKBLGraphics kext. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel.

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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 APPLE-SA-2021-02-09-1 macOS Big Sur 1121, macOS Catalina 10157 Supplemental Update, and macOS Mojave 10146 Security Update 2021-002 macOS Big Sur 1121, macOS Catalina 10157 Supplemental Update, and macOS Mojave 10146 Security Update 2021-002 addresses the following issues Information ab ...

CWE-362 https://support.apple.com/en-us/HT212177 https://support.apple.com/kb/HT212327 http://seclists.org/fulldisclosure/2021/Apr/54 https://nvd.nist.gov http://seclists.org/fulldisclosure/2021/Apr/54 https://www.zerodayinitiative.com/advisories/ZDI-21-197/

CVE-2021-1806

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