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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2019-20175 Detail

Disputed     

Current 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.


View Analysis Description

Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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%40nongnu.org/msg667396.html

Weakness Enumeration

CWE-ID CWE Name Source
CWE-754 Improper Check for Unusual or Exceptional Conditions cwe source acceptance level NIST  

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Change History

8 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-20175
NVD Published Date:
12/30/2019
NVD Last Modified:
08/04/2024
Source:
MITRE