SB2021092108 - Code execution in Dell BIOS
Published: September 21, 2021
Security Bulletin ID
SB2021092108
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2021-36283)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to execute arbitrary code on the system.
The vulnerability exists due to insufficient validation of user-supplied input in SMRAM. A local administrator can use an SMI and execute arbitrary code on the target system.
Remediation
Install update from vendor's website.