QEMU up to 8.0.0 hw/scsi/scsi-disk.c scsi_disk_reset divide by zero

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in QEMU up to 8.0.0. It has been declared as problematic. This issue affects the function scsi_disk_reset of the file hw/scsi/scsi-disk.c. The manipulation results in divide by zero. This vulnerability is cataloged as CVE-2023-42467. There is no exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability classified as problematic has been found in QEMU up to 8.0.0 (Virtualization Software). Affected is the function scsi_disk_reset of the file hw/scsi/scsi-disk.c. The manipulation with an unknown input leads to a divide by zero vulnerability. CWE is classifying the issue as CWE-369. The product divides a value by zero. This is going to have an impact on availability. CVE summarizes:

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.

The weakness was shared 09/11/2023 as 1813. The advisory is shared for download at gitlab.com. This vulnerability is traded as CVE-2023-42467 since 09/11/2023. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 209571 (Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)), which helps to determine the existence of the flaw in a target environment.

Applying the patch 3f91104484e5bf55b56d7e1b039a4a5a17d0c1a7 is able to eliminate this problem. The bugfix is ready for download at gitlab.com.

The vulnerability is also documented in the databases at Tenable (209571) and EUVD (EUVD-2023-46907). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Divide by zero
CWE: CWE-369 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 209571
Nessus Name: Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 3f91104484e5bf55b56d7e1b039a4a5a17d0c1a7

Timelineinfo

09/11/2023 🔍
09/11/2023 +0 days 🔍
09/11/2023 +0 days 🔍
02/02/2026 +875 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: 1813
Status: Confirmed

CVE: CVE-2023-42467 (🔍)
GCVE (CVE): GCVE-0-2023-42467
GCVE (VulDB): GCVE-100-239364
EUVD: 🔍

Entryinfo

Created: 09/11/2023 06:53
Updated: 02/02/2026 11:10
Changes: 09/11/2023 06:53 (43), 10/04/2023 17:41 (10), 10/25/2024 05:47 (17), 02/02/2026 11:10 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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