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Redhat.comRH:CVE-2023-20555HistorySep 28, 2023 - 7:24 a.m.
CVE-2023-20555
2023-09-2807:24:53
redhat.com
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cve-2023-20555
input validation
smm memory corruption
arbitrary code execution
amd contact
CVSS3
7.8
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0
Percentile
5.1%
A flaw was found in hw. Insufficient input validation in CpmDisplayFeatureSmm may allow an attacker to corrupt SMM memory by overwriting an arbitrary bit in an attacker-controlled pointer, potentially leading to arbitrary code execution in SMM.
Mitigation
Please contact AMD for further information.
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AMD Client UEFI Firmware August 2023 Security Update
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cvelist
CVE-2023-20555
2023-08-08 17:07:24
CVSS3
7.8
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0
Percentile
5.1%
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