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ubuntucveUbuntu.comUB:CVE-2023-42467
HistorySep 11, 2023 - 12:00 a.m.

CVE-2023-42467

2023-09-1100:00:00
ubuntu.com
ubuntu.com
13
qemu
8.0.0
division by zero
scsi_disk_reset
unhandled blocksize
privileged guest user
vm

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

1.7 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

5.2%

JSON

QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset in
hw/scsi/scsi-disk.c because scsi_disk_emulate_mode_select does not prevent
s->qdev.blocksize from being 256. This stops QEMU and the guest
immediately.

Bugs

Notes

Author Note
Priority reason: Privileged guest user can crash own VM only
OSVersionArchitecturePackageVersionFilename
ubuntu23.04noarchqemu< 1:7.2+dfsg-5ubuntu2.4UNKNOWN
ubuntu23.10noarchqemu< 1:8.0.4+dfsg-1ubuntu3.23.10.2UNKNOWN
ubuntu24.04noarchqemu< 1:8.1.3+ds-1ubuntu1UNKNOWN

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QEMU vulnerabilities
2024-01-08 00:00:00

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

1.7 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

5.2%

JSON
Related for UB:CVE-2023-42467
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