Vulnerability in OpenStack Neutron
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 attackers can reconfigure dnsmasq via a crafted extra_dhcp_opts value.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.018 (78.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- OpenStack Neutron
- Debian Linux — versions 9.0, 10.0, 11.0
References
- launchpad.net/bugs/1939733 (Exploit, Third Party Advisory, Issue Tracking)
- www.openwall.com/lists/oss-security/2021/08/31/2 (mailing-list, Patch, Mailing List, Third Party Advisory)
- security.openstack.org/ossa/OSSA-2021-005.html (Patch, Vendor Advisory)
- lists.debian.org/debian-lts-announce/2021/10/msg00005.html (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2021/dsa-4983 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/05/msg00038.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-40085?
- CVE-2021-40085 is a medium-severity vulnerability in OpenStack Neutron. CVSS score: 6.5/10. Published 2021-08-31.
- How severe is CVE-2021-40085?
- Medium severity. CVSS v3 base score is 6.5 out of 10.