CVE-2019-20175 - Vulnerability Details - OpenCVE

Description

An issue was discovered in ide_dma_cb() in hw/ide/core.c in QEMU 2.4.0 through 4.2.0. The guest system can crash the QEMU process in the host system via a special SCSI_IOCTL_SEND_COMMAND. It hits an assertion that implies that the size of successful DMA transfers there must be a multiple of 512 (the size of a sector). NOTE: a member of the QEMU security team disputes the significance of this issue because a "privileged guest user has many ways to cause similar DoS effect, without triggering this assert.

Published: 2019-12-31

Score: 7.5 High

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

No analysis available yet.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00537.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg01651.html
https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg03869.html
https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg00597.html
https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg02165.html
https://www.mail-archive.com/qemu-devel%40nongnu.org/msg667396.html

History

No history.

Subscriptions

Qemu Qemu

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2019-12-31T03:27:40.000Z

Updated: 2024-08-05T02:39:09.821Z

Reserved: 2019-12-31T00:00:00.000Z

Link: CVE-2019-20175

Vulnrichment

Updated: 2024-08-05T02:39:09.821Z

NVD

Status : Modified

Published: 2019-12-31T04:15:10.503

Modified: 2024-11-21T04:38:09.763

Link: CVE-2019-20175

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-754

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