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Debian Security Bug TrackerDEBIANCVE:CVE-2023-20584HistoryAug 13, 2024 - 5:15 p.m.
CVE-2023-20584
2024-08-1317:15:19
Debian Security Bug Tracker
security-tracker.debian.org
iommu
address ranges
dte faults
rmp checks
sev-snp
guest integrity
hypervisor
privileges
cve-2023-20584
unix
CVSS3
5.3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N
AI Score
6.9
Confidence
Low
IOMMU improperly handles certain special address ranges with invalid device table entries (DTEs), which may allow an attacker with privileges and a compromised Hypervisor to induce DTE faults to bypass RMP checks in SEV-SNP, potentially leading to a loss of guest integrity.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | amd64-microcode | < 3.20240820.1~deb12u1 | amd64-microcode_3.20240820.1~deb12u1_all.deb |
| Debian | 11 | all | amd64-microcode | < 3.20240820.1~deb11u1 | amd64-microcode_3.20240820.1~deb11u1_all.deb |
| Debian | 999 | all | amd64-microcode | < 3.20240820.1 | amd64-microcode_3.20240820.1_all.deb |
| Debian | 13 | all | amd64-microcode | < 3.20240820.1 | amd64-microcode_3.20240820.1_all.deb |
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CVSS3
5.3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N
AI Score
6.9
Confidence
Low
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