Summary
Reference
Document ID: KM02993505 (c04926482)
Version: 1
Release Date: 2015-12-21
Last Updated: 2015-12-21
Potential Security Impact: Remote Access Restriction Bypass, Increase in Privilege
Source: Hewlett Packard Enterprise, HPE Product Security Response Team
VULNERABILITY SUMMARY
A potential security vulnerability has been identified with HPE Helion Eucalyptus. The vulnerability could be exploited to bypass access permissions by a remote authenticated user.
Notes:
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In Eucalyptus, following the AWS model, IAM roles are used to temporarily allow users or services to access resources within or across accounts. Access to roles is determined by the role’s trust policy and a set of user permissions. The trust policy is associated with a role and defines which accounts or services are allowed to assume the role. User permissions are defined by the policy associated with the user, and define a set of actions and resources that the user is allowed to access.
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An issue has been identified in how Eucalyptus checks user permissions when allowing a user to assume a role. Given that the grant policy allows the user’s account to assume the role, any user in that account would be able to assume the role, even if the user’s policy does not explicitly grant the AssumeRole permission for the role. As a result, in some cases authenticated users could gain privileges by assuming an IAM role that they were not intended to have access to. The impact is mitigated by the fact that the role’s trust policy still has to explicitly authorize the user’s account to access the role.
- CVE-2015-6861
- PSRT102965
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HPE Helion Eucalyptus 3.4.0 to 4.2.0
BACKGROUND
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Reference
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Base Vector
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Base Score
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|---|---|---|
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CVE-2015-6861
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(AV:N/AC:H/Au:S/C:P/I:P/A:P)
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4.6
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RESOLUTION
HPE has made the following software updates available to resolve the vulnerability.
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HPE Helion Eucalyptus 4.2.1
Instructions for downloading and upgrading to the latest HPE Helion Eucalyptus software are available at the following location:
http://www8.hp.com/us/en/cloud/helion-eucalyptus-downloads.html
HISTORY
Version:1 (rev.1) - 21 December 2015 Initial release
Third Party Security Patches: Third party security patches that are to be installed on systems running Hewlett Packard Enterprise (HPE) software products should be applied in accordance with the customer's patch management policy.
Support: For issues about implementing the recommendations of this Security Bulletin, contact normal HPE Services support channel. For other issues about the content of this Security Bulletin, send e-mail to security-alert@hpe.com.
Report: To report a potential security vulnerability with any HPE supported product, send Email to: security-alert@hpe.com
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Security Bulletin Archive: A list of recently released Security Bulletins is available here:http://www.hpe.com/support/Security_Bulletin_Archive
Software Product Category: The Software Product Category is represented in the title by the two characters following HPSB.
3C = 3COM
3P = 3rd Party Software
GN = HP General Software
HF = HP Hardware and Firmware
MU = Multi-Platform Software
NS = NonStop Servers
OV = OpenVMS
PV = ProCurve
ST = Storage Software
UX = HP-UX
System management and security procedures must be reviewed frequently to maintain system integrity. HP is continually reviewing and enhancing the security features of software products to provide customers with current secure solutions.
"HP is broadly distributing this Security Bulletin in order to bring to the attention of users of the affected HP products the important security information contained in this Bulletin. HP recommends that all users determine the applicability of this information to their individual situations and take appropriate action. HP does not warrant that this information is necessarily accurate or complete for all user situations and, consequently, HP will not be responsible for any damages resulting from user's use or disregard of the information provided in this Bulletin. To the extent permitted by law, HP disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose, title and non-infringement."