Out-of-bounds write in macOS - CVE-2020-27897
Published: March 31, 2021 / Updated: April 28, 2021
Vulnerability identifier: #VU51809
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-27897
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Apple Inc.
Affected software:
macOS
macOS
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the handling of numerous IOCTLs in the AppleIntelKBLGraphics kext in Intel Graphics Driver. A local user can run a specially crafted program to trigger out-of-bounds write and execute arbitrary code on the target system.
How to mitigate CVE-2020-27897
Install updates from vendor's website.
Sources
- https://support.apple.com/en-us/HT212011
- https://www.zerodayinitiative.com/advisories/ZDI-21-388/
- https://www.zerodayinitiative.com/advisories/ZDI-21-397/
- https://www.zerodayinitiative.com/advisories/ZDI-21-396/
- https://www.zerodayinitiative.com/advisories/ZDI-21-395/
- https://www.zerodayinitiative.com/advisories/ZDI-21-394/
- https://www.zerodayinitiative.com/advisories/ZDI-21-393/
- https://www.zerodayinitiative.com/advisories/ZDI-21-392/
- https://www.zerodayinitiative.com/advisories/ZDI-21-391/
- https://www.zerodayinitiative.com/advisories/ZDI-21-390/
- https://www.zerodayinitiative.com/advisories/ZDI-21-387/
- https://www.zerodayinitiative.com/advisories/ZDI-21-386/
- https://www.zerodayinitiative.com/advisories/ZDI-21-385/
- https://www.zerodayinitiative.com/advisories/ZDI-21-384/
- https://www.zerodayinitiative.com/advisories/ZDI-21-383/
- https://www.zerodayinitiative.com/advisories/ZDI-21-382/
- https://www.zerodayinitiative.com/advisories/ZDI-21-381/
- https://www.zerodayinitiative.com/advisories/ZDI-21-380/
- https://www.zerodayinitiative.com/advisories/ZDI-21-379/
- https://www.zerodayinitiative.com/advisories/ZDI-21-378/
- https://www.zerodayinitiative.com/advisories/ZDI-21-486/