CVE-2019-20175
QEMU IDE DoS Vulnerability
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.
INFO
Published Date :
Dec. 31, 2019, 4:15 a.m.
Last Modified :
Aug. 5, 2024, 3:15 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-20175.
| URL | 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 |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-20175 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-20175 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Aug. 05, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Jun. 26, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 17, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Apr. 11, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Mar. 21, 2024
Action Type Old Value New Value Added Tag MITRE disputed -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Changed 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." 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. Added Reference MITRE https://www.mail-archive.com/qemu-devel%40nongnu.org/msg667396.html [No types assigned] Removed Reference MITRE https://www.mail-archive.com/[email protected]/msg667396.html -
Initial Analysis by [email protected]
Jan. 15, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg01651.html No Types Assigned https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg01651.html Exploit, Mailing List, Third Party Advisory Changed Reference Type https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg03869.html No Types Assigned https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg03869.html Mailing List, Third Party Advisory Changed Reference Type https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg00597.html No Types Assigned https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg00597.html Third Party Advisory Changed Reference Type https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg02165.html No Types Assigned https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg02165.html Mailing List, Patch, Third Party Advisory Changed Reference Type https://www.mail-archive.com/[email protected]/msg667396.html No Types Assigned https://www.mail-archive.com/[email protected]/msg667396.html Patch, Third Party Advisory Added CWE NIST CWE-754 Added CPE Configuration OR *cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* versions from (including) 2.4.0 up to (including) 4.2.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-20175 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-20175
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.17 }} 0.00%
score
0.52088
percentile