Security Bulletin: Openstack Keystone vulnerabilities affects IBM Spectrum Scale (CVE-2020-12689)

Security Bulletin

Summary

IBM Spectrum Scale, shipped with Openstack keystone, is exposed to vulnerabilities as detailed below.

Vulnerability Details

CVEID: CVE-2020-12689
DESCRIPTION: OpenStack Keystone could allow a remote authenticated attacker to gain elevated privileges on the system, caused by improper permission validation. By creating an EC2 credential, an authenticated attacker could exploit this vulnerability to gain elevated privileges as admin.
CVSS Base score: 8.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/181609 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2020-12692
DESCRIPTION: OpenStack Keystone could allow a remote attacker to bypass security restrictions, caused by improper signature TTL validation for AWS Signature V4. By sniffing the Authorization header, an attacker could exploit this vulnerability to reissue an OpenStack token an unlimited number of times.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/181612 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N)

CVEID: CVE-2020-12691
DESCRIPTION: OpenStack Keystone could allow a remote authenticated attacker to gain elevated privileges on the system, caused by improper permission validation. By creating an EC2 credential, an authenticated attacker could exploit this vulnerability to gain elevated privileges as admin.
CVSS Base score: 8.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/181611 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2020-12690
DESCRIPTION: OpenStack Keystone could allow a remote authenticated attacker to gain elevated privileges on the system, caused by an issue with the provided keystone token having more role assignments than the creator intended. By sending a specially-crafted request, an authenticated attacker could exploit this vulnerability to gain elevated privileges .
CVSS Base score: 8.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/181610 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s)	Version(s)
IBM Spectrum Scale	5.0.0 - 5.0.5

Remediation/Fixes

For IBM Spectrum Scale V5.0.0.0 through 5.0.5, apply V5.0.5.1 available from FixCentral at:

https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Spectrum+Scale&release=5.0.5&platform=All&function=all

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

13 Aug 2020: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location

Worldwide

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Tips

Security Bulletin: Openstack Keystone vulnerabilities affects IBM Spectrum Scale (CVE-2020-12689)