Home > Vulnerability Database > CVE-2021-38578

Mend.io Vulnerability Database

New vulnerability? Tell us about it!

CVE-2021-38578

Date: March 3, 2022

Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.

Language: C

Severity Score

7.4

Related Resources (7)

Url: https://security-tracker.debian.org/tracker/CVE-2021-38578

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-38578

Url: https://bugzilla.tianocore.org/show_bug.cgi?id=3387

Url: https://www.insyde.com/security-pledge/SA-2023024

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2021-38578

Url: https://access.redhat.com/security/cve/CVE-2021-38578

Url: https://www.mend.io/vulnerability-database/CVE-2021-38578

Severity Score

7.4

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

Buffer Underwrite ('Buffer Underflow')

CWE-124

CVSS v3.1

Base Score:	7.4
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	HIGH
Privileges Required (PR):	HIGH
User Interaction (UI):	NONE
Scope (S):	CHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	LOW

CVSS v2

Base Score:	7.5
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	PARTIAL
Additional information:

Do you need more information?

Contact Us