CVE-2016-4911
First published: Mon Jun 13 2016(Updated: )
The Fernet Token Provider in OpenStack Identity (Keystone) 9.0.x before 9.0.1 (mitaka) allows remote authenticated users to prevent revocation of a chain of tokens and bypass intended access restrictions by rescoping a token.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| pip/keystone | >=9.0.0<9.0.1 | 9.0.1 |
| OpenStack Keystone | =9.0.0.0-rc1 | |
| OpenStack Keystone | =9.0.0.0-rc2 | |
| OpenStack Keystone | =9.0.0.0-rc3 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2016/05/17/10
- http://www.openwall.com/lists/oss-security/2016/05/17/11
- http://www.securityfocus.com/bid/90728
- https://bugs.launchpad.net/keystone/+bug/1577558
- https://review.openstack.org/#/c/311886/
- https://security.openstack.org/ossa/OSSA-2016-008.html
- https://nvd.nist.gov/vuln/detail/CVE-2016-4911
- https://github.com/openstack/keystone/commit/0d376025bae61bf5ee19d992c7f336b99ac69240
- https://github.com/openstack/keystone/commit/ee1dc941042d1f71699971c5c30566af1b348572
- https://review.openstack.org/#/c/311886
- https://github.com/advisories/GHSA-f82m-w3p3-cgp3 (Advisory)
- https://github.com/pypa/advisory-database/tree/main/vulns/keystone/PYSEC-2016-38.yaml
Frequently Asked Questions
What is the severity of CVE-2016-4911?
CVE-2016-4911 is rated as important due to its potential to allow unauthorized access.
How do I fix CVE-2016-4911?
To fix CVE-2016-4911, upgrade to OpenStack Identity (Keystone) version 9.0.1 or later.
What impact does CVE-2016-4911 have on my system?
CVE-2016-4911 allows remote authenticated users to maintain access privileges by preventing token revocation.
Which versions of OpenStack are affected by CVE-2016-4911?
CVE-2016-4911 affects OpenStack Keystone versions before 9.0.1, including 9.0.0.0-rc1, 9.0.0.0-rc2, and 9.0.0.0-rc3.
Is there a known exploit for CVE-2016-4911?
Yes, CVE-2016-4911 can be exploited by authenticated users to bypass intended access restrictions.
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