CVE-2021-40085

MediumCVSS 6.5/10Last modified Jun 17, 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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://www.openwall.com/lists/oss-security/2021/08/31/2Mailing List, Patch, Third Party Advisory
https://launchpad.net/bugs/1939733Exploit, Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00005.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00038.htmlMailing List, Third Party Advisory
https://security.openstack.org/ossa/OSSA-2021-005.htmlPatch, Vendor Advisory
https://www.debian.org/security/2021/dsa-4983Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/08/31/2Mailing List, Patch, Third Party Advisory
https://launchpad.net/bugs/1939733Exploit, Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00005.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00038.htmlMailing List, Third Party Advisory
https://security.openstack.org/ossa/OSSA-2021-005.htmlPatch, Vendor Advisory
https://www.debian.org/security/2021/dsa-4983Third Party Advisory

Timeline

Published: Aug 31, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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