Vulnerability 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.
CVSS Score
6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openstack | Neutron | < 16.4.1 |
| Debian | Debian Linux | 9.0 |
References
- http://www.openwall.com/lists/oss-security/2021/08/31/2Mailing ListPatchThird Party Advisory
- https://launchpad.net/bugs/1939733ExploitIssue TrackingThird 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
- http://www.openwall.com/lists/oss-security/2021/08/31/2Mailing ListPatchThird Party Advisory
- https://launchpad.net/bugs/1939733ExploitIssue TrackingThird 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
FAQ
What is CVE-2021-40085?
CVE-2021-40085 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 severe is CVE-2021-40085?
CVE-2021-40085 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-40085?
Check the references section above for vendor advisories and patch information. Affected products include: Openstack Neutron, Debian Debian Linux.