1c3455cc2b
vulnerability This adds OSSN-0010, which covers a privilege escalation issue associated with a sample Keystone v3 policy file. Change-Id: I3213bbf4b9956b75d733f219660fcefe6a51848d Related-Bug: #1287219
48 lines
2.0 KiB
Plaintext
48 lines
2.0 KiB
Plaintext
Sample Keystone v3 policy exposes privilege escalation vulnerability
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---
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### Summary ###
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The policy.v3cloudsample.json sample Keystone policy file combined with
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the underlying mutability of the domain ID for user, group, and project
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entities exposed a privilege escalation vulnerability. When this
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sample policy is applied a domain administrator can elevate their
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privileges to become a cloud administrator.
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### Affected Services / Software ###
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Keystone, Havana
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### Discussion ###
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Changes to the Keystone v3 sample policy during the Havana release cycle
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set an excessively broad domain administrator scope that allowed
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creation of roles ("create_grant") on other domains (among other
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actions). There was no check that the domain administrator had
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authority to the domain they were attempting to grant a role on.
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Combining the mutable state of the domain ID for user, group, and
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project entities with the sample v3 policy resulted in a privilege
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escalation vulnerability. A domain administrator could execute a series
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of steps to escalate their access to that of a cloud administrator.
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### Recommended Actions ###
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Review the following updated sample v3 policy file from the OpenStack
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Icehouse release:
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https://git.openstack.org/cgit/openstack/keystone/commit/?id=0496466821c1ff6e7d4209233b6c671f88aadc50
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You should ensure that your Keystone deployment appropriately reflects
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that update. Domain administrators should generally only be permitted
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to perform actions against the domain for which they are an
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administrator.
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Optionally, review the recent addition of support for immutable domain
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IDs and consider it for applicability to your Keystone deployment:
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https://git.openstack.org/cgit/openstack/keystone/commit/?id=a2fa6a6f01a4884edf369cafa39946636af5cf1a
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### Contacts / References ###
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This OSSN : https://wiki.openstack.org/wiki/OSSN/OSSN-0010
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Original LaunchPad Bug : https://bugs.launchpad.net/keystone/+bug/1287219
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OpenStack Security ML : openstack-security@lists.openstack.org
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OpenStack Security Group : https://launchpad.net/~openstack-ossg
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