CVE-2019-20175
7.5
HIGH
CVSS 3.1
EPSS 3.4%
描述
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.
如何修補 CVE-2019-20175
要修補 CVE-2019-20175,請將受影響套件升級到下列已修補版本。
- —升級至 1:5.0-1 或更新版本
CVE-2019-20175 正在被利用嗎?
低 — EPSS 為 3.4%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- from 0, < 1:5.0-1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |