Security Issues in OpenStack

Rostyslav Slipetskyy’s Maste’s thesisSubmission date: June 2011

Presenter: 陳傑威

Agenda

陳傑威 2

Introduction to OpenStack• Definition• History• Projects

Security Issues in OpenStack (thesis)• Objective• Contribution• Conclusion

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OpenStack is open source cloud operating system.

NIST(National Institute of Standards and Technology, 美國國家技術標準局 ):

Cloud Computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction

DefinitionuserSaaS

PaaS

IaaS

Physical layer

(e.g. Salesforce)

(e.g. Hadoop)

(e.g. OpenStack)

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What is OpenStack

(Eucalyptus)EC2 S3

+

Projects:

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What is OpenStack(2)

研究機構政府機構金融機構製藥公司電子商務公司媒體…

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Security Issues in OpenStack (thesis)

• Main Objective: Analyze how various security issues are handled in OpenStack

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Security Issues IdentifiedCSA (Cloud Security Alliance 雲端安全聯盟 )

ENISA (European Network and Information Security Agency 歐洲網路資訊安全局 )

NIST (National Institute of Standards and Technology 國家標準技術研究所 )

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Security Issues Identified (2)

• 1. OpenStack Object Storage• 2. Security issues:– Identity and Access Management– Data Management

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OpenStack Installation安裝在虛擬環境中的 OpenStack Object Storage

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Security Isseus:

• Identity and Access Management Security Issues– Identity

Provisioning/Deprovisioning– Identity Federation– Authentication– Authorization and Access

Control

• Data Management Security Issues– Data Location– Isolation– Backup and Recovery– Deletion– Encryption and Key

Management– Integrity Verification

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Identity Provision/Deprovisioning

• Overview– 2 back-end system:

• Devauth: user data are stored in SQLite database.

• Swauth: user data are stored as files in Object Storage.

– 4 roles: • User: has no permissions relative to user management.

• Admin: can add users to an account where he is an administrator. In swauth can delete users from administered accounts.

• Reseller Admin: has Admin permissions on all the accounts. Cannot add other Reseller Admins.

• Super Admin: the most powerful user, who can perform all user management procedures, including adding Reseller Admins.

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Authentication

OpenStack Object Storage 的認證方式

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Authentication Systems: Devauth• User data (passwords, groups) are stored in SQLite database

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Authentication Systems: Swauth• User data (passwords, groups) are stored as JSON-encoded

data in text files in Object Storage

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Authentication: Security Token Generation

• Session ID Analysis:1. Set token expiration time to 0 seconds .

2. Obtain 10000 tokens generated for the same user.

3. Analyze tokens with WebScarab to check patterns.

4. Analyze generated tokens with Burp Sequencer tool.

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Authentication: Security Token Generation(2)

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Authentication: Portability of stored data

• Devauth 不適用• Swauth

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Data Management

在 OpenStack Object Storage中的數據檢索

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Data Management (2)

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• END!