CVE-2021-38598
unknown
CVSS v3
—
CVSS v2
—
VIR risk
—
Description
OpenStack Neutron before 16.4.1, 17.x before 17.1.3, and 18.0.0 allows hardware address impersonation when the linuxbridge driver with ebtables-nft is used on a Netfilter-based platform. By sending carefully crafted packets, anyone in control of a server instance connected to the virtual switch can impersonate the hardware addresses of other systems on the network, resulting in denial of service or in some cases possibly interception of traffic intended for other destinations.
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-38598
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-38598.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 2:18.1.0-2 |
| debian | bullseye | fixed | 2:17.2.1-0+deb11u1 |
| debian | forky | fixed | 2:18.1.0-2 |
| debian | sid | fixed | 2:18.1.0-2 |
| debian | trixie | fixed | 2:18.1.0-2 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-38598
- https://github.com/openstack/neutron/commit/0a931391d8990f3e654b4bfda24ae4119c609bbf
- https://github.com/openstack/neutron/commit/cc0d28a3e2ccfad6fc2ff24d78f009cbe3992575
- https://github.com/openstack/neutron
- https://github.com/pypa/advisory-database/tree/main/vulns/neutron/PYSEC-2021-360.yaml
- https://launchpad.net/bugs/1938670
- https://opendev.org/openstack/neutron/commit/fafa5dacd5057120562184a734e7345e7c0e9639
- https://www.suse.com/security/cve/CVE-2021-38598.html
- https://security-tracker.debian.org/tracker/CVE-2021-38598
Verify integrity in audit chain (admin only). AS-IS.