CVE-2016-5362

Severity: high (CVSS 8.2 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-06-17 · updated 2026-06-17
Weakness: CWE-254

Description

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.

Affected products

OpenStack Neutron: from 7.0.0 before 7.0.4; from 8.0.0 through 8.1.0 — fixed in 7.0.4

How to fix

Upgrade to a fixed version: OpenStack Neutron 7.0.4. Check the vendor advisory for mitigations.

References

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
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

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