OpenStack Object Storage (Swift) before 2.3.0, when allow_version is configured, allows remote authenticated users to delete the latest version of an object by leveraging listing access to the x-versions-location container.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2015:1681 advisory.

    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     deployment.

    A flaw was found in openstack-swift where an authenticated user may     delete the most recent version of a versioned object regardless of     ownership. To exploit this flaw an attacker most know the name of the     object and have listing access to the x-versions-location container.
    (CVE-2015-1856)

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

This update fixes CVE-2015-1856, unauthorized deletion of versioned Swift object.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 14.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-2704-1 advisory.

    Rajaneesh Singh discovered Swift does not properly enforce metadata limits. An attacker could abuse this     issue to store more metadata than allowed by policy. (CVE-2014-7960)

    Clay Gerrard discovered Swift allowed users to delete the latest version of object regardless of object     permissions when allow_version is configured. An attacker could use this issue to delete objects.
    (CVE-2015-1856)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
193831	RHEL 7 : openstack-swift (RHSA-2015:1681)	Nessus	Red Hat Local Security Checks	high
85288	Fedora 22 : openstack-swift-2.2.0-5.fc22 (2015-12245)	Nessus	Fedora Local Security Checks	medium
85252	Ubuntu 14.04 LTS : Swift vulnerabilities (USN-2704-1)	Nessus	Ubuntu Local Security Checks	critical

Detections

Analytics

CVE-2015-1856

critical

Tenable Plugins

high

medium

critical