OpenStack Compute (Nova) Grizzly, Folsom (2012.2), and Essex (2012.1) allows remote authenticated users to gain access to a VM in opportunistic circumstances by using the VNC token for a deleted VM that was bound to the same VNC port.
Weakness
According to WASC, “Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization.”
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Essex | Openstack | 2012.1 (including) | 2012.1 (including) |
| Folsom | Openstack | 2012.2 (including) | 2012.2 (including) |
| Grizzly | Openstack | 2012.2 (including) | 2012.2 (including) |
| OpenStack Folsom for RHEL 6 | RedHat | openstack-nova-0:2012.2.3-7.el6ost | * |
| Nova | Ubuntu | oneiric | * |
| Nova | Ubuntu | precise | * |
| Nova | Ubuntu | quantal | * |
| Nova | Ubuntu | upstream | * |
Potential Mitigations
References
- http://rhn.redhat.com/errata/RHSA-2013-0709.html
- http://secunia.com/advisories/52337
- http://secunia.com/advisories/52728
- http://www.openwall.com/lists/oss-security/2013/02/26/7
- http://www.osvdb.org/90657
- http://www.ubuntu.com/usn/USN-1771-1
- https://access.redhat.com/errata/RHSA-2013:0709
- https://access.redhat.com/security/cve/CVE-2013-0335
- https://bugs.launchpad.net/nova/+bug/1125378
- https://github.com/advisories/GHSA-qfp8-hfqx-c79c
- https://review.openstack.org/#/c/22086/
- https://review.openstack.org/#/c/22758
- https://review.openstack.org/#/c/22872/
- http://rhn.redhat.com/errata/RHSA-2013-0709.html
- http://secunia.com/advisories/52337
- http://secunia.com/advisories/52728
- http://www.openwall.com/lists/oss-security/2013/02/26/7
- http://www.osvdb.org/90657
- http://www.ubuntu.com/usn/USN-1771-1
- https://bugs.launchpad.net/nova/+bug/1125378
- https://review.openstack.org/#/c/22086/
- https://review.openstack.org/#/c/22758
- https://review.openstack.org/#/c/22872/