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CVE-2014-3517

Status Candidate

Overview

api/metadata/handler.py in OpenStack Compute (Nova) before 2013.2.4, 2014.x before 2014.1.2, and Juno before Juno-2, when proxying metadata requests through Neutron, makes it easier for remote attackers to guess instance ID signatures via a brute-force attack that relies on timing differences in responses to instance metadata requests.

Related Files

Ubuntu Security Notice USN-2325-1
Posted Aug 21, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2325-1 - Alex Gaynor discovered that OpenStack Nova would sometimes respond with variable times when comparing authentication tokens. If nova were configured to proxy metadata requests via Neutron, a remote authenticated attacker could exploit this to conduct timing attacks and ascertain configuration details of another instance.

tags | advisory, remote
systems | linux, ubuntu
advisories | CVE-2014-3517
SHA-256 | 8788b38b5a81104c8f533ce3a4143ab93be8c6996fcfa6dc36bab40aff69999d
Red Hat Security Advisory 2014-1084-01
Posted Aug 21, 2014
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2014-1084-01 - OpenStack Compute launches and schedules large networks of virtual machines, creating a redundant and scalable cloud computing platform. Compute provides the software, control panels, and APIs required to orchestrate a cloud, including running virtual machine instances, managing networks, and controlling access through users and projects. It was found that RBAC policies were not enforced in certain methods of the OpenStack Compute EC2 API. A remote attacker could use this flaw to escalate their privileges beyond the user group they were originally restricted to. Note that only certain setups using non-default RBAC rules for OpenStack Compute were affected.

tags | advisory, remote
systems | linux, redhat
advisories | CVE-2014-0167, CVE-2014-3517
SHA-256 | 3c25ea0f31a94abd37555dce2866ca455ade1242e9c70c53365d1fb7c26bce19
Red Hat Security Advisory 2014-0940-01
Posted Jul 24, 2014
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2014-0940-01 - OpenStack Compute launches and schedules large networks of virtual machines, creating a redundant and scalable cloud computing platform. A side-channel timing attack flaw was found in Nova. An attacker could possibly use this flaw to guess valid instance ID signatures, giving them access to details of another instance, by analyzing the response times of requests for instance metadata. This issue only affected configurations that proxy metadata requests via Neutron.

tags | advisory
systems | linux, redhat
advisories | CVE-2014-3517
SHA-256 | 0dea30bc1e9c22fe2fa05d20778c0dea310d9d7295170dd8826f16158c433de1
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