Out-of-bounds Write in Intel products - CVE-2020-8740

Vulnerability identifier: #VU48428

CSH Severity: Low

CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-8740

CWE-ID: CWE-787

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in Intel BIOS platform sample code. A local administrator can trigger out-of-bounds write and execute arbitrary code on the target system with elevated privileges.

2nd Generation Intel Xeon Scalable Processors
Intel Core X-series Processors
Intel Xeon W Processors
Intel Xeon D Processors
Intel Xeon Processor E7 v4 Family
Intel Xeon Processor E5 v3 Family
Intel Xeon Processor E5 v4 Family
Intel Xeon Scalable Processors

Install updates from vendor's website.

• https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00390

• Multiple vulnerabilities in Intel BIOS Platform Sample Code