GHSA-hvm4-mc7m-22w4

OpenStack Neutron vulnerable to hardware address impersonation

Source: GitHub Advisory Database (reviewed) High CVE-2021-38598

Packages

Ecosystem	Package	Affected	Fixed in
PyPI	neutron	< 16.4.1	16.4.1
PyPI	neutron	>= 17.0.0, < 17.1.3	17.1.3
PyPI	neutron	18.0.0	no fix listed

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2021-38598 advisory
https://github.com/openstack/neutron/commit/0a931391d8990f3e654b4bfda24ae4119c609bbf web
https://github.com/openstack/neutron/commit/cc0d28a3e2ccfad6fc2ff24d78f009cbe3992575 web
https://github.com/openstack/neutron package
https://github.com/pypa/advisory-database/tree/main/vulns/neutron/PYSEC-2021-360.yaml web
https://launchpad.net/bugs/1938670 web
https://opendev.org/openstack/neutron/commit/fafa5dacd5057120562184a734e7345e7c0e9639 web