CVE-2021-20267GHSA-W8HX-F868-PVCHPYSEC-2021-136
A flaw was found in openstack-neutron's default Open vSwitch firewall rules.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 16.3.1, 15.3.3, 17.1.1
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
A flaw was found in openstack-neutron's default Open vSwitch firewall rules. By sending carefully crafted packets, anyone in control of a server instance connected to the virtual switch can impersonate the IPv6 addresses of other systems on the network, resulting in denial of service or in some cases possibly interception of traffic intended for other destinations. Only deployments using the Open vSwitch driver are affected. Source: OpenStack project. Versions before openstack-neutron 15.3.3, openstack-neutron 16.3.1 and openstack-neutron 17.1.1 are affected.
Timeline
- CVE published
- Record last updated
Affected versions
- n/a openstack-neutron
Version range not reported
- neutronPyPI
From 16.0.0 · fixed in 16.3.1
- neutronPyPI
fixed in 15.3.3
- neutronPyPI
From 17.0.0 · fixed in 17.1.1
- neutronPyPI
fixed in 15.3.3; From 16.0.0 · fixed in 16.3.1; From 17.0.0 · fixed in 17.1.1