6.5

CVE-2021-40797: openstack neutron

CVSS: 6.5v3.1MediumModified
AliasesGHSA-cpx3-696p-3cw9PYSEC-2021-329RHSA-2022:0990
Published 08-09-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-40797 is a medium (CVSS 6.5) vulnerability in openstack neutron. EPSS estimates a 1.77% chance of exploitation in the next 30 days, higher than 77.8% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
1.77%
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 2 · Related 2
SUSE-SU-2022:1884-1USN-6067-1

Timeline

  1. 08-09-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in the routes middleware in OpenStack Neutron before 16.4.1, 17.x before 17.2.1, and 18.x before 18.1.1. By making API requests involving nonexistent controllers, an authenticated user may cause the API worker to consume increasing amounts of memory, resulting in API performance degradation or denial of service.

CVSS metrics

7 scores · 5 sources · 3 versions

EPSS trend

Probability

1.77%

Chance of exploitation in the next 30 days

Percentile

78%

Versus all other CVEs

30-day change

0.00 pp

From 1.77% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.77%

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

Redhat10 products
  • openstack-neutron< 1:15.2.1-1.20220112133420.el8ost | < 1:15.3.5-2.20220113150031.el8ost
  • openstack-neutron-common< 1:15.2.1-1.20220112133420.el8ost | < 1:15.3.5-2.20220113150031.el8ost
  • openstack-neutron-linuxbridge< 1:15.2.1-1.20220112133420.el8ost | < 1:15.3.5-2.20220113150031.el8ost
  • openstack-neutron-macvtap-agent< 1:15.2.1-1.20220112133420.el8ost | < 1:15.3.5-2.20220113150031.el8ost
  • openstack-neutron-metering-agent< 1:15.2.1-1.20220112133420.el8ost | < 1:15.3.5-2.20220113150031.el8ost
Debian1 product
  • neutron< 2:19.0.0-1
Openstack1 product
  • neutron< 16.4.1 | ≥ 17.0.0, < 17.2.1 | ≥ 18.0.0, < 18.1.1
PyPI1 product
  • neutron< 16.4.1 | ≥ 17.0.0, < 17.2.1 | ≥ 18.0.0, < 18.1.1
Ubuntu1 product
  • neutronAll versions (No fix recorded) | < 2:12.1.1-0ubuntu8.1 | < 2:16.4.2-0ubuntu6.2

5 vendors · 14 products

References

40 links
Show all 40 references