Upstream information
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.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
| National Vulnerability Database | |
|---|---|
| Base Score | 6.4 |
| Vector | AV:N/AC:L/Au:N/C:P/I:N/A:P |
| Access Vector | Network |
| Access Complexity | Low |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | None |
| Availability Impact | Partial |
| National Vulnerability Database | SUSE | |
|---|---|---|
| Base Score | 9.1 | 5.4 |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L |
| Attack Vector | Network | Adjacent Network |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | High | Low |
| Integrity Impact | None | None |
| Availability Impact | High | Low |
| CVSSv3 Version | 3 | 3 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products past their end of life and not receiving proactive updates anymore. | ||
| HPE Helion OpenStack 8 | python-os-vif | Not affected |
| HPE Helion OpenStack Cloud 8 | python-os-vif | Not affected |
| SUSE OpenStack Cloud 7 | python-os-vif | Not affected |
| SUSE OpenStack Cloud 8 | python-os-vif | Not affected |
| SUSE OpenStack Cloud 9 | python-os-vif | Not affected |
| SUSE OpenStack Cloud Crowbar 8 | python-os-vif | Not affected |
| SUSE OpenStack Cloud Crowbar 9 | python-os-vif | Not affected |
SUSE Timeline for this CVE
CVE page created: Thu Aug 29 02:40:43 2019CVE page last modified: Wed May 1 02:12:00 2024