CVE-2021-40085
MEDIUM6.5EPSS 1.3%neutron - security update
Published: 5/24/2022Modified: 4/28/2026
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.
Affected packages (5)
- Debian/neutronfrom 0, < 2:17.2.1-0+deb11u1
- Debian/neutronfrom 0, < 2:9.1.1-3+deb9u3
- Debian/neutronfrom 0, < 2:13.0.7+git.2021.09.27.bace3d1890-0+deb10u1
- PyPI/neutronfrom 0, < 16.4.1
- PyPI/neutronfrom 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 |
References (11)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-40085
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2021-40085
- PATCHhttps://github.com/openstack/neutron
- WEBhttps://github.com/openstack/neutron/commit/df891f0593d234e01f27d7c0376d9702e178ecfb
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/neutron/PYSEC-2021-361.yaml
- WEBhttps://launchpad.net/bugs/1939733
- WEBhttps://lists.debian.org/debian-lts-announce/2021/10/msg00005.html
- WEBhttps://lists.debian.org/debian-lts-announce/2022/05/msg00038.html
- WEBhttps://security.openstack.org/ossa/OSSA-2021-005.html
- WEBhttps://www.debian.org/security/2021/dsa-4983
- WEBhttp://www.openwall.com/lists/oss-security/2021/08/31/2