7.8
CVSSv3

CVE-2020-27897

Published: 02/04/2021 Updated: 04/05/2021
CVSS v2 Base Score: 7.2 | Impact Score: 10 | Exploitability Score: 3.9
CVSS v3 Base Score: 7.8 | Impact Score: 5.9 | Exploitability Score: 1.8
VMScore: 642
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Vulnerability Summary

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 handling of IOCTL 0x1000B in the AppleIntelKBLGraphics kext. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel.

Vulnerability Trend

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apple mac os x

apple mac os x 10.14.6

apple mac os x 10.15.7

apple macos

Mailing Lists

<!--X-Body-Begin--> <!--X-User-Header--> Full Disclosure mailing list archives <!--X-User-Header-End--> <!--X-TopPNI--> By Date By Thread </form> <!--X-TopPNI-End--> <!--X-MsgBody--> <!--X-Subject-Header-Begin--> APPLE-SA-2020-12-14-4 Additional information for APPLE-SA-2020-11-13-1 macOS Big Sur 1101 <!--X-Subject-Header-End-- ...