CVE-2021-40085
unknown
CVSS v3
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CVSS v4 NEW
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VIR risk
—
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.
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2:18.1.0-3 |
| sid | Fixed | 2:18.1.0-3 |
| forky | Fixed | 2:18.1.0-3 |
| bullseye | Fixed | 2:17.2.1-0+deb11u1 |
| bookworm | Fixed | 2:18.1.0-3 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-40085
- https://github.com/openstack/neutron/commit/df891f0593d234e01f27d7c0376d9702e178ecfb
- https://github.com/openstack/neutron
- https://github.com/pypa/advisory-database/tree/main/vulns/neutron/PYSEC-2021-361.yaml
- https://launchpad.net/bugs/1939733
- https://lists.debian.org/debian-lts-announce/2021/10/msg00005.html
- https://lists.debian.org/debian-lts-announce/2022/05/msg00038.html
- https://security.openstack.org/ossa/OSSA-2021-005.html
- https://www.debian.org/security/2021/dsa-4983
- http://www.openwall.com/lists/oss-security/2021/08/31/2
- https://www.suse.com/security/cve/CVE-2021-40085.html
- https://security-tracker.debian.org/tracker/CVE-2021-40085
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.