Description (CNA)
In OpenStack Neutron before 28.0.1, a project manager can create or update a port on a shared network owned by another project and set device_owner to a value that has "network:" at the beginning ("network:dhcp" for example). The default port RBAC policies incorrectly included PROJECT_MANAGER without requiring network ownership, allowing any project manager to obtain trusted network-service port behavior on shared networks. Depending on backend and deployment, this can bypass anti-spoofing and security group protections, enabling DHCP, MAC, or IP spoofing against other tenants on the shared network. This is a regression of CVE-2015-5240 (OSSA-2015-018).
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| OpenStack / Neutron | affected 25.0.0 before 25.2.4; affected 26.0.0 before 26.0.4; affected 27.0.0 before 27.0.3; affected 28.0.0 before 28.0.1 |
CWE
CWE-863
References
- https://launchpad.net/bugs/2152115
- https://review.opendev.org/990273
- https://review.opendev.org/990353
- https://review.opendev.org/990356
- https://www.openwall.com/lists/oss-security/2026/06/04/6
ADP enrichment
No English description supplied.