CVE-2021-38598

unknown

Published 2022-05-24 · Modified 2024-02-23

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CVSS v3

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

CVSS v4 NEW

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not yet in upstream

VIR risk

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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

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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 with source_tier=community-verified.

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`2:18.1.0-2`
sid	Fixed	`2:18.1.0-2`
forky	Fixed	`2:18.1.0-2`
bullseye	Fixed	`2:17.2.1-0+deb11u1`
bookworm	Fixed	`2:18.1.0-2`

Package impact

Ecosystem	Package	Vulnerable	Fixed
PyPI	neutron	`<16.4.1`	`16.4.1`
PyPI	neutron	`>=17.0.0,<17.1.3`	`17.1.3`
PyPI	neutron
PyPI	neutron	`>=18.0.0,<18.1.0`	`16.4.1`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.