Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Keystone | Openstack Identity | 9.0.0.0 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2016/05/17/10Mailing List
- http://www.openwall.com/lists/oss-security/2016/05/17/11Mailing List
- http://www.securityfocus.com/bid/90728Third Party AdvisoryVDB Entry
- https://bugs.launchpad.net/keystone/+bug/1577558Vendor Advisory
- https://review.openstack.org/#/c/311886/Vendor Advisory
- https://security.openstack.org/ossa/OSSA-2016-008.htmlPatchVendor Advisory
- http://www.openwall.com/lists/oss-security/2016/05/17/10Mailing List
- http://www.openwall.com/lists/oss-security/2016/05/17/11Mailing List
- http://www.securityfocus.com/bid/90728Third Party AdvisoryVDB Entry
- https://bugs.launchpad.net/keystone/+bug/1577558Vendor Advisory
- https://review.openstack.org/#/c/311886/Vendor Advisory
- https://security.openstack.org/ossa/OSSA-2016-008.htmlPatchVendor Advisory
FAQ
What is CVE-2016-4911?
CVE-2016-4911 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 restricti...
How severe is CVE-2016-4911?
CVE-2016-4911 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-4911?
Check the references section above for vendor advisories and patch information. Affected products include: Keystone Openstack Identity.