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CVE

CVE-2021-40085

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 at

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.

MEDIUM · CVSS 6.5 EPSS 0.01348
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
▤

Affected Products & Versions

4
openstack neutron< 16.4.1
openstack neutron>= 17.0.0 and < 17.2.1
openstack neutron>= 18.0.0 and < 18.1.1
debian linuxall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
PyPI neutron HIGH fixed in 16.4.1
⚠

Public Exploits & PoCs

1
poclaunchpad.net · 1939733launchpad.net
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD31 Aug 2021 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
⚑

Vendor Advisories

7
usnUSN-6067-1
suse-csafSUSE-SU-2022:1884-1
suse-csafSUSE-SU-2022:1729-1
rhsaRHSA-2021:3503Important
rhsaRHSA-2021:3481Important
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2021/08/31/2Mailing ListPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00005.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00038.htmlMailing ListThird Party Advisory
https://security.openstack.org/ossa/OSSA-2021-005.htmlPatchVendor Advisory
https://www.debian.org/security/2021/dsa-4983Third Party Advisory
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