Access Control Bypass in OpenStack Keystone Identity Service
CVE-2015-7546

7.5HIGH

Key Information:

Vendor
Openstack
Status
Keystonemiddleware
Vendor
CVE Published:
3 February 2016

Summary

The OpenStack Identity service (Keystone) contains a flaw that fails to properly invalidate authorization tokens when using the PKI or PKIZ token providers. This vulnerability allows authenticated users to bypass access restrictions and gain unauthorized access to cloud resources by exploiting manipulated byte fields within a revoked authorization token. Versions prior to 2015.1.3 and certain releases of Liberty and keystonemiddleware are susceptible to this issue, posing significant risks to cloud environments.

References

https://wiki.openstack.org/wiki/OSSN/OSSN-0062
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http://www.oracle.com/technetwork/topics/security/bulleti...
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https://bugs.launchpad.net/keystone/+bug/1490804
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.