Vulnerability CVE-2021-38578


Published: 2022-03-03

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

Type:

CWE-787

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Tianocore -> EDK2 

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

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