8.3

CVE-2020-17376: openstack nova

CVSS: 8.3v3.1HighModified
AliasesGHSA-c7w7-9c85-4qxvPYSEC-2020-243RHSA-2020:3702
Published 26-08-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-17376 is a high (CVSS 8.3) vulnerability in openstack nova. EPSS estimates a 1.73% chance of exploitation in the next 30 days, higher than 77.2% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
44/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.3/10
010
High · v3.1 (NVD)
EPSS score
1.73%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 4 · Related 4
SUSE-SU-2020:2876-1SUSE-SU-2020:2911-1SUSE-SU-2020:3309-1USN-5866-1

Timeline

  1. 26-08-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

7 scores · 5 sources · 3 versions

EPSS trend

Probability

1.73%

Chance of exploitation in the next 30 days

Percentile

77%

Versus all other CVEs

30-day change

0.00 pp

From 1.73% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.73%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (launchpad.net)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Redhat18 products
  • openstack-nova< 1:20.3.1-0.20200626213436.38ee1f3.el8ost | < 1:20.1.2-0.20200401205215.28324e6.el8ost | < 1:19.1.0-0.20200207070459.bf9d9e5.el8ost | < 1:17.0.13-24.el7ost | < 1:14.1.0-65.el7ost
  • openstack-nova-api< 1:20.3.1-0.20200626213436.38ee1f3.el8ost | < 1:20.1.2-0.20200401205215.28324e6.el8ost | < 1:19.1.0-0.20200207070459.bf9d9e5.el8ost | < 1:17.0.13-24.el7ost | < 1:14.1.0-65.el7ost
  • openstack-nova-cells< 1:19.1.0-0.20200207070459.bf9d9e5.el8ost | < 1:17.0.13-24.el7ost | < 1:14.1.0-65.el7ost
  • openstack-nova-cert< 1:14.1.0-65.el7ost
  • openstack-nova-common< 1:20.3.1-0.20200626213436.38ee1f3.el8ost | < 1:20.1.2-0.20200401205215.28324e6.el8ost | < 1:19.1.0-0.20200207070459.bf9d9e5.el8ost | < 1:17.0.13-24.el7ost | < 1:14.1.0-65.el7ost
Debian1 product
  • nova< 2:21.1.0-1
Openstack1 product
  • nova< 19.3.1 | ≥ 20.0.0, < 20.3.1 | 21.0.0
PyPI1 product
  • nova< 19.3.1 | ≥ 20.0.0, < 20.3.1 | 21.0.0 | ≥ 21.0.0, < 21.1.0
Ubuntu1 product
  • nova< 2:17.0.13-0ubuntu5.3 | < 2:21.2.4-0ubuntu2.1

5 vendors · 22 products

References

31 links
Show all 31 references