Security readout for executives and security teams
Plain-English summary
OpenStack Neutron’s iptables firewall could fail to stop DHCP spoofing. An attacker able to send a crafted DHCP discovery message could disrupt networking or intercept traffic, affecting confidentiality and availability in vulnerable OpenStack clouds.
Executive priority
Prioritize remediation for affected OpenStack clouds, especially multi-tenant environments. The risk is operationally meaningful because it may allow service disruption or traffic interception, but the provided sources do not confirm active exploitation.
Technical view
CVE-2016-5362 affects OpenStack Neutron before 7.0.4 and versions 8.0.0 through 8.1.0. The iptables firewall DHCP anti-spoofing mechanism can be bypassed using a crafted DHCP discovery message, enabling denial of service or traffic interception.
Likely exposure
Exposure is limited to environments running the stated vulnerable OpenStack Neutron versions with iptables firewall DHCP spoofing protections. The source bundle does not identify additional affected products beyond OpenStack Neutron and vendor advisories.
Exploitation context
The CVE describes remote attack capability via a crafted DHCP discovery message. KEV is false, and the provided sources do not establish active exploitation, public exploit use, or exploitation at scale.
Researcher notes
Evidence is source-limited: no CVSS, CWE, or detailed exploit preconditions are included in the bundle. Analysis should stay anchored to OpenStack Neutron iptables DHCP spoofing protection bypass and the specified vulnerable version ranges.
Mitigation direction
- Upgrade OpenStack Neutron to 7.0.4, or a later fixed supported release.
- For Red Hat deployments, review RHSA-2016:1473 and RHSA-2016:1474 guidance.
- Check OpenStack OSSA-2016-009 for upstream security advisory details.
- Confirm DHCP anti-spoofing protections are enforced after patching.
Validation and detection
- Inventory OpenStack Neutron versions across all cloud controllers and network nodes.
- Identify deployments running Neutron before 7.0.4 or 8.0.0 through 8.1.0.
- Review vendor package status against RHSA-2016:1473 or RHSA-2016:1474 where applicable.
- Validate security group and DHCP anti-spoofing behavior in a controlled test environment.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2016-5362 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- RHSA-2016:1473CVE reference · vendor-advisory, x_refsource_REDHAT
- https://security.openstack.org/ossa/OSSA-2016-009.htmlCVE reference · x_refsource_CONFIRM
- https://bugs.launchpad.net/neutron/+bug/1558658CVE reference · x_refsource_CONFIRM
- https://review.openstack.org/#/c/303572/CVE reference · x_refsource_CONFIRM
- RHSA-2016:1474CVE reference · vendor-advisory, x_refsource_REDHAT
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.