Debian Security Bug TrackerDEBIANCVE:CVE-2021-38578CVE-2021-38578
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 High
AI Score
Confidence
High
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
55.2%
Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | edk2 | < 2022.11-1 | edk2_2022.11-1_all.deb |
| Debian | 11 | all | edk2 | <= 2020.11-2+deb11u1 | edk2_2020.11-2+deb11u1_all.deb |
| Debian | 10 | all | edk2 | <= 0~20181115.85588389-3+deb10u3 | edk2_0~20181115.85588389-3+deb10u3_all.deb |
| Debian | 999 | all | edk2 | < 2022.11-1 | edk2_2022.11-1_all.deb |
| Debian | 13 | all | edk2 | < 2022.11-1 | edk2_2022.11-1_all.deb |
Related
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 High
AI Score
Confidence
High
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
55.2%