CVE-2021-38598

NameCVE-2021-38598
DescriptionOpenStack 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
neutron (PTS)stretch2:9.1.1-3+deb9u1vulnerable
stretch (security)2:9.1.1-3+deb9u2vulnerable
buster2:13.0.2-15vulnerable
buster (security)2:13.0.7+git.2021.09.27.bace3d1890-0+deb10u1vulnerable
bullseye2:17.1.1-6vulnerable
bullseye (security)2:17.2.1-0+deb11u1fixed
bookworm, sid2:19.0.0-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
neutronsourcebullseye2:17.2.1-0+deb11u1
neutronsource(unstable)2:18.1.0-2

Notes

[buster] - neutron <ignored> (Minor issue, not backported to rocky branch)
[stretch] - neutron <no-dsa> (Minor issue)
https://www.openwall.com/lists/oss-security/2021/08/17/4
https://launchpad.net/bugs/1938670
https://review.opendev.org/c/openstack/neutron/+/785917/

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