CVE-2021-40085
neutron - security update
6.5
MEDIUM
CVSS 3.1
EPSS 1.3%
Description
An issue was discovered in OpenStack Neutron before 16.4.1, 17.x before 17.2.1, and 18.x before 18.1.1. Authenticated attackers can reconfigure dnsmasq via a crafted extra_dhcp_opts value.
How to fix CVE-2021-40085
To remediate CVE-2021-40085, upgrade the affected package to a fixed version below.
- Debian/neutron—upgrade to 2:17.2.1-0+deb11u1 or later
- —upgrade to 2:9.1.1-3+deb9u3 or later
- —upgrade to 2:13.0.7+git.2021.09.27.bace3d1890-0+deb10u1 or later
- —upgrade to 16.4.1 or later
- —upgrade to 16.4.1 or later
Is CVE-2021-40085 being exploited?
Low — EPSS is 1.3%, meaning exploitation activity has not been observed at scale.
Affected packages (5)
- from 0, < 2:17.2.1-0+deb11u1
- from 0, < 2:9.1.1-3+deb9u3
- from 0, < 2:13.0.7+git.2021.09.27.bace3d1890-0+deb10u1
- from 0, < 16.4.1
- from 0, < 16.4.1, >= 17.0.0, < 17.2.1, >= 18.0.0, < 18.1.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |