Vulnerability Details : CVE-2023-42467
Potential exploit
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.
Products affected by CVE-2023-42467
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-42467
0.01%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 1 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-42467
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2023-42467
-
The product divides a value by zero.Assigned by: nvd@nist.gov (Primary)
References for CVE-2023-42467
-
https://security.netapp.com/advisory/ntap-20231103-0005/
CVE-2023-42467 QEMU Vulnerability in NetApp Products | NetApp Product Security
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https://gitlab.com/qemu-project/qemu/-/issues/1813
FPE division by zero in scsi_disk_reset() (#1813) · Issues · QEMU / QEMU · GitLabExploit;Issue Tracking;Third Party Advisory
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https://gitlab.com/thuth/qemu/-/commit/3f91104484e5bf55b56d7e1b039a4a5a17d0c1a7
hw/scsi/scsi-disk: Disallow block sizes smaller than BDRV_SECTOR_SIZE (3f911044) · Commits · Thomas Huth / QEMU · GitLabPatch
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https://gitlab.com/qemu-project/qemu/-/commit/7cfcc79b0ab800959716738aff9419f53fc68c9c
hw/scsi/scsi-disk: Disallow block sizes smaller than 512 [CVE-2023-42467] (7cfcc79b) · Commits · QEMU / QEMU · GitLab
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