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CVSS: 8.2EPSS: 3%CPEs: 7EXPL: 0

The IPTables firewall in OpenStack Neutron before 7.0.4 and 8.0.0 through 8.1.0 allows remote attackers to bypass an intended MAC-spoofing protection mechanism and consequently cause a denial of service or intercept network traffic via (1) a crafted DHCP discovery message or (2) crafted non-IP traffic. El firewall IPTables en OpenStack Neutron en versiones anteriores a 7.0.4 y 8.0.0 hasta la versión 8.1.0 permite a atacantes remotos eludir un mecanismo de protección destinado a suplantar una MAC y consecuentemente provocar una denegación de servicio o interceptar tráfico de red a través de (1) la detección de un mensaje DHCP manipulado o (2) tráfico no IP manipulado. Neutron functionality includes internal firewall management between networks. Due to the relaxed nature of particular rules, it is possible for machines on the same layer 2 networks to forge non-IP traffic, such as ARP and DHCP requests. • http://www.openwall.com/lists/oss-security/2016/06/10/5 http://www.openwall.com/lists/oss-security/2016/06/10/6 https://access.redhat.com/errata/RHSA-2016:1473 https://access.redhat.com/errata/RHSA-2016:1474 https://bugs.launchpad.net/neutron/+bug/1558658 https://review.openstack.org/#/c/299021 https://review.openstack.org/#/c/299023 https://review.openstack.org/#/c/299025 https://security.openstack.org/ossa/OSSA-2016-009.html https://access. • CWE-254: 7PK - Security Features •

CVSS: 8.2EPSS: 3%CPEs: 2EXPL: 0

The IPTables firewall in OpenStack Neutron before 7.0.4 and 8.0.0 through 8.1.0 allows remote attackers to bypass an intended DHCP-spoofing protection mechanism and consequently cause a denial of service or intercept network traffic via a crafted DHCP discovery message. El firewall IPTables en OpenStack Neutron en versiones anteriores a 7.0.4 y 8.0.0 hasta la versión 8.1.0 permite a atacantes remotos eludir un mecanismo destinado a la protección DHCP-spoofing y consecuentemente causar una denegación de servicio o interceptar tráfico de la red a través de un mensaje DHCP de descubrimiento manipulado. Neutron functionality includes internal firewall management between networks. Due to the relaxed nature of particular rules, it is possible for machines on the same layer 2 networks to forge non-IP traffic, such as ARP and DHCP requests. • http://www.openwall.com/lists/oss-security/2016/06/10/5 http://www.openwall.com/lists/oss-security/2016/06/10/6 https://access.redhat.com/errata/RHSA-2016:1473 https://access.redhat.com/errata/RHSA-2016:1474 https://bugs.launchpad.net/neutron/+bug/1558658 https://review.openstack.org/#/c/300202 https://review.openstack.org/#/c/303563 https://review.openstack.org/#/c/303572 https://security.openstack.org/ossa/OSSA-2016-009.html https://access. • CWE-254: 7PK - Security Features •

CVSS: 9.1EPSS: 4%CPEs: 2EXPL: 1

The IPTables firewall in OpenStack Neutron before 7.0.4 and 8.0.0 through 8.1.0 allows remote attackers to bypass an intended ICMPv6-spoofing protection mechanism and consequently cause a denial of service or intercept network traffic via a link-local source address. El firewall IPTables en OpenStack Neutron en versiones anteriores a 7.0.4 y 8.0.0 hasta la versión 8.1.0 permite a atacantes remotos eludir un mecanismo destinado a la protección ICMPv6-spoofing y consecuentemente causar una denegación de servicio o interceptar tráfico de la red a través de de una dirección fuente local de enlace. Neutron functionality includes internal firewall management between networks. Due to the relaxed nature of particular rules, it is possible for machines on the same layer 2 networks to forge non-IP traffic, such as ARP and DHCP requests. • http://www.openwall.com/lists/oss-security/2016/06/10/5 http://www.openwall.com/lists/oss-security/2016/06/10/6 https://access.redhat.com/errata/RHSA-2016:1473 https://access.redhat.com/errata/RHSA-2016:1474 https://bugs.launchpad.net/neutron/+bug/1502933 https://review.openstack.org/#/c/300233 https://review.openstack.org/#/c/310648 https://review.openstack.org/#/c/310652 https://security.openstack.org/ossa/OSSA-2016-009.html https://access. • CWE-254: 7PK - Security Features •