CVE-2021-38578

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-38578
Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5 /10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References
Link Resource
https://bugzilla.tianocore.org/show_bug.cgi?id=3387 Issue Tracking Vendor Advisory
https://www.insyde.com/security-pledge/SA-2023024 Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:tianocore:edk2:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:insyde:kernel:5.0:*:*:*:*:*:*:*
cpe:2.3:o:insyde:kernel:5.2:*:*:*:*:*:*:*
cpe:2.3:o:insyde:kernel:5.3:*:*:*:*:*:*:*
cpe:2.3:o:insyde:kernel:5.4:*:*:*:*:*:*:*
cpe:2.3:o:insyde:kernel:5.5:*:*:*:*:*:*:*
cpe:2.3:o:insyde:kernel:5.1:*:*:*:*:*:*:*
History

06 Aug 2024, 01:15

Type Values Removed Values Added
Summary Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize. Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.

02 Aug 2023, 17:24

Type Values Removed Values Added
References (MISC) https://bugzilla.tianocore.org/show_bug.cgi?id=3387 - Issue Tracking, Permissions Required, Vendor Advisory (MISC) https://bugzilla.tianocore.org/show_bug.cgi?id=3387 - Issue Tracking, Vendor Advisory
References (MISC) https://www.insyde.com/security-pledge/SA-2023024 - (MISC) https://www.insyde.com/security-pledge/SA-2023024 - Third Party Advisory
First Time Insyde
Insyde kernel
CPE cpe:2.3:o:insyde:kernel:5.2:*:*:*:*:*:*:*
cpe:2.3:o:insyde:kernel:5.3:*:*:*:*:*:*:*
cpe:2.3:o:insyde:kernel:5.1:*:*:*:*:*:*:*
cpe:2.3:o:insyde:kernel:5.5:*:*:*:*:*:*:*
cpe:2.3:o:insyde:kernel:5.0:*:*:*:*:*:*:*
cpe:2.3:o:insyde:kernel:5.4:*:*:*:*:*:*:*

23 Jul 2023, 02:15

Type Values Removed Values Added
References
  • (MISC) https://www.insyde.com/security-pledge/SA-2023024 -
Summary Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize. Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.
Information

Published : 2022-03-03 22:15

Updated : 2024-08-06 01:15

NVD link : CVE-2021-38578

Mitre link : CVE-2021-38578

JSON object : View

Products Affected

tianocore

  • edk2

insyde

  • kernel
CWE
CWE-787

Out-of-bounds Write