National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-20175 Detail

Current Description

** DISPUTED ** 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."

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 7.5 HIGH
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg01651.html Exploit Mailing List Third Party Advisory
https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg03869.html Mailing List Third Party Advisory
https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg00597.html Third Party Advisory
https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg02165.html Mailing List Patch Third Party Advisory
https://www.mail-archive.com/qemu-devel@nongnu.org/msg667396.html Patch Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-754 Improper Check for Unusual or Exceptional Conditions NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
2.4.0
Up to (including)
4.2.0


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-20175
NVD Published Date:
12/30/2019
NVD Last Modified:
01/15/2020