CVE - CVE-2021-20267

CVE-ID
CVE-2021-20267	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:https://security.openstack.org/ossa/OSSA-2021-001.html MISC:https://bugzilla.redhat.com/show_bug.cgi?id=1934330 URL:https://bugzilla.redhat.com/show_bug.cgi?id=1934330 MLIST:[oss-security] 20210712 [OSSA-2021-001] Neutron: Anti-spoofing bypass for Open vSwitch networks (CVE-2021-20267) URL:http://www.openwall.com/lists/oss-security/2021/07/12/2
Assigning CNA
Red Hat, Inc.
Date Record Created
20201217	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20201217)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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