CVE-2020-17376
OpenStack Nova Live migration fails to update persistent domain XML
8.3
HIGH
CVSS 3.1
EPSS 1.7%
描述
An issue was discovered in Guest.migrate in virt/libvirt/guest.py in OpenStack Nova before 19.3.1, 20.x before 20.3.1, and 21.0.0. By performing a soft reboot of an instance that has previously undergone live migration, a user may gain access to destination host devices that share the same paths as host devices previously referenced by the virtual machine on the source host. This can include block devices that map to different Cinder volumes at the destination than at the source. Only deployments allowing host-based connections (for instance, root and ephemeral devices) are affected.
如何修補 CVE-2020-17376
要修補 CVE-2020-17376,請將受影響套件升級到下列已修補版本。
- —升級至 2:21.1.0-1 或更新版本
- —升級至 19.3.1 或更新版本
- —升級至 19.3.1 或更新版本
CVE-2020-17376 正在被利用嗎?
低 — EPSS 為 1.7%,目前沒有觀察到大規模利用活動。
受影響套件(3)
- from 0, < 2:21.1.0-1
- from 0, < 19.3.1
- from 0, < 19.3.1, >= 20.0.0, < 20.3.1, >= 21.0.0, < 21.1.0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH8.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L |