CVE-2017-15139
Find out more about CVE-2017-15139 from the MITRE CVE dictionary dictionary and NIST NVD.
Statement
With this update, disabled zero-padding is no longer the default for new volumes. Users can override this behavior by setting the new configuration item, "sio_allow_non_padded_volumes=True". However, the default should not be overridden if multiple tenants will be using volumes from a shared Storage Pool.
CVSS v3 metrics
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 4.8 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | Low |
| User Interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | None |
| Availability Impact | None |
Affected Packages State
| Platform | Package | State |
|---|---|---|
| Red Hat OpenStack Platform 9.0 | openstack-cinder | Affected |
| Red Hat OpenStack Platform 8.0 (Liberty) | openstack-cinder | Affected |
| Red Hat OpenStack Platform 13.0 (Queens) | openstack-cinder | Affected |
| Red Hat OpenStack Platform 12.0 | openstack-cinder | Affected |
| Red Hat OpenStack Platform 10 | openstack-cinder | Affected |
| Red Hat OpenShift Enterprise 3 | cinder | Not affected |
| Red Hat JBoss Fuse 7 | openstack-cinder | Not affected |
| Red Hat JBoss Fuse 6 | openstack-cinder | Not affected |
| Red Hat Gluster Storage 3 | cinder | Not affected |
| Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 | openstack-cinder-2015 | Not affected |
Mitigation
This flaw only affects Red Hat OpenStack Platform deployments which use the third-party EMC ScaleIO driver plugin. To mitigate this flaw, ensure all volumes use zero-padding by updating the ScaleIO storage-pool policy.
Note: Only an empty pool's policy can be changed.
scli --modify_zero_padding_policy
(((--protection_domain_id <ID> |
--protection_domain_name <NAME>)
--storage_pool_name <NAME>) | --storage_pool_id <ID>)
(--enable_zero_padding | --disable_zero_padding)
Example:
scli --modify_zero_padding_policy
--protection_domain_name pd10 --storage_pool_name scale1
--enable_zero_padding