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AUSCERT External Security Bulletin Redistribution
Moderate: openstack-swift security update
26 August 2015
AusCERT Security Bulletin Summary
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 6
Red Hat Enterprise Linux Server 7
Impact/Access: Delete Arbitrary Files -- Existing Account
CVE Names: CVE-2015-1856
Comment: This advisory references vulnerabilities in products which run on
platforms other than Red Hat. It is recommended that administrators
running openstack-swift check for an updated version of the software
for their operating system.
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Red Hat Security Advisory
Synopsis: Moderate: openstack-swift security update
Advisory ID: RHSA-2015:1684-01
Product: Red Hat Enterprise Linux OpenStack Platform
Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1684.html
Issue date: 2015-08-25
CVE Names: CVE-2015-1856
Updated openstack-swift packages that fix one security issue are now
available for Red Hat Enterprise Linux OpenStack Platform 5.0.
Red Hat Product Security has rated this update as having Moderate security
impact. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available from the CVE link in the
2. Relevant releases/architectures:
Red Hat Enterprise Linux OpenStack Platform 5.0 for RHEL 6 - noarch
Red Hat Enterprise Linux OpenStack Platform 5.0 for RHEL 7 - noarch
OpenStack Object Storage (swift) provides object storage in virtual
containers, which allows users to store and retrieve files (arbitrary
data). The service's distributed architecture supports horizontal scaling;
redundancy as failure-proofing is provided through software-based data
replication. Because Object Storage supports asynchronous eventual
consistency replication, it is well suited to multiple data-center
A flaw was found in OpenStack Object Storage that could allow an
authenticated user to delete the most recent version of a versioned object
regardless of ownership. To exploit this flaw, an attacker must know the
name of the object and have listing access to the x-versions-location
Red Hat would like to thank the OpenStack project for reporting this issue.
Upstream acknowledges Clay Gerrard of SwiftStack as the original reporter.
All users of openstack-swift are advised to upgrade to these updated
packages, which correct this issue. After installing this update, the
OpenStack Object Storage services will be restarted automatically.
Before applying this update, ensure all previously released errata
relevant to your system have been applied.
For details on how to apply this update, refer to:
5. Bugs fixed (https://bugzilla.redhat.com/):
1209994 - CVE-2015-1856 OpenStack Swift: unauthorized deletion of versioned Swift object
6. Package List:
Red Hat Enterprise Linux OpenStack Platform 5.0 for RHEL 6:
Red Hat Enterprise Linux OpenStack Platform 5.0 for RHEL 7:
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
The Red Hat security contact is <email@example.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2015 Red Hat, Inc.
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