Red Hat Bugzilla – Bug 993340
CVE-2013-2256 OpenStack: Nova private flavors resource limit circumvention
Last modified: 2016-04-27 00:56:11 EDT
Jeremey Stanley (firstname.lastname@example.org) reports:
Title: Resource limit circumvention in Nova private flavors
Reporter: hzrandd (NetEase)
Affects: All versions
hzrandd from NetEase reported a resource limit circumvention
vulnerability in Nova's handling of private flavors. Any tenant is
able to show and boot any other tenant's private flavors by guessing
a flavor ID. This not only exposes the flavor's name, memory and
disk size, swap allocation, VCPU count and similar flavor
properties, but potentially allows circumvention of any resource
limits enforced through the os-flavor-access:is_public property.
Havana (development branch) fix:
This fix is included in the 2013.2.b2 development milestone and will
appear in a future 2013.1.3 release.
This is now public:
Created openstack-nova tracking bugs for this issue:
Affects: fedora-all [bug 994809]
Affects: epel-6 [bug 994810]
The previous fix was insufficient and did not fully fix the flaw, as noted here:
The patch to fully correct this flaw is here (I believe it would be in addition to previously-mentioned patches):
This will require a second CVE for the incomplete fix; I've asked upstream to bring this up on the oss-security list.
(In reply to Vincent Danen from comment #5)
> The previous fix was insufficient and did not fully fix the flaw, as noted
> The patch to fully correct this flaw is here (I believe it would be in
> addition to previously-mentioned patches):
> This will require a second CVE for the incomplete fix; I've asked upstream
> to bring this up on the oss-security list.
Assigned a CVE and created BZ 1000086
Red Hat would like to thank the OpenStack project for reporting this issue. Upstream acknowledges hzrandd from NetEase as the original reporter. Upstream also acknowledges Ken'ichi Ohmichi from NEC for providing a corrected fix for this issue.
This issue has been addressed in following products:
OpenStack 3 for RHEL 6
Via RHSA-2013:1199 https://rhn.redhat.com/errata/RHSA-2013-1199.html