CVE-2019-15753
Summary
| CVE | CVE-2019-15753 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2019-08-28 21:15:00 UTC |
| Updated | 2020-08-24 17:37:00 UTC |
| Description | In OpenStack os-vif 1.15.x before 1.15.2, and 1.16.0, a hard-coded MAC aging time of 0 disables MAC learning in linuxbridge, forcing obligatory Ethernet flooding of non-local destinations, which both impedes network performance and allows users to possibly view the content of packets for instances belonging to other tenants sharing the same network. Only deployments using the linuxbridge backend are affected. This occurs in PyRoute2.add() in internal/command/ip/linux/impl_pyroute2.py. |
Risk And Classification
Problem Types: CWE-770
NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Bug #1837252 “[OSSA-2019-004] Ageing time of 0 disables linuxbri...” : Bugs : os-vif | MISC | launchpad.net | Issue Tracking, Third Party Advisory |
| review.opendev.org/678098 | MISC | review.opendev.org | Patch |
| OpenStack Docs: OSSA-2019-004: Ageing time of 0 disables linuxbridge MAC learning | CONFIRM | security.openstack.org | Patch, Vendor Advisory |
| review.opendev.org/672834 | MISC | review.opendev.org | Patch |
| oss-security - [OSSA-2019-004] Ageing time of 0 disables linuxbridge MAC learning (CVE-2019-15753) | MLIST | www.openwall.com | Mailing List, Patch, Third Party Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.