OpenStack Object Storage (Swift) before 2.2.0 allows remote authenticated users to bypass the max_meta_count and other metadata constraints via multiple crafted requests which exceed the limit when combined.
https://exchange.xforce.ibmcloud.com/vulnerabilities/96901
https://bugs.launchpad.net/swift/+bug/1365350
http://www.ubuntu.com/usn/USN-2704-1
http://www.securityfocus.com/bid/70279
http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
http://www.openwall.com/lists/oss-security/2014/10/08/7
http://www.openwall.com/lists/oss-security/2014/10/07/39
http://rhn.redhat.com/errata/RHSA-2015-1495.html
http://rhn.redhat.com/errata/RHSA-2015-0836.html
http://rhn.redhat.com/errata/RHSA-2015-0835.html
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00025.html