SB2021092109 - Multiple vulnerabilities in Dell BIOS

Description

This security bulletin contains information about 2 vulnerabilities.

1) Improper Restriction of Excessive Authentication Attempts (CVE-ID: CVE-2021-36284)

CWE-ID: CWE-307 - Improper Restriction of Excessive Authentication Attempts

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to the authentication mechanism has no brute-force prevention. A local administrator can bypass excessive admin password attempt mitigations and perform a brute-force attack.

2) Improper Restriction of Excessive Authentication Attempts (CVE-ID: CVE-2021-36285)

CWE-ID: CWE-307 - Improper Restriction of Excessive Authentication Attempts

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to the authentication mechanism has no brute-force prevention. A local administrator can bypass excessive NVMe password attempt mitigations and perform a brute-force attack.

Remediation

Install update from vendor's website.

References

• https://www.dell.com/support/kbdoc/fr-fr/printview/000191495/10/en