Published: 13/06/2016 Updated: 23/07/2022

CVSS v2 Base Score: 4 | Impact Score: 2.9 | Exploitability Score: 8

CVSS v3 Base Score: 4.3 | Impact Score: 1.4 | Exploitability Score: 2.8

VMScore: 356

Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N

The Fernet Token Provider in OpenStack Identity (Keystone) 9.0.x prior to 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.

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keystone openstack identity 9.0.0.0

Debian Bug report logs - #824683 keystone: CVE-2016-4911: Incorrect Audit IDs in Keystone Fernet Tokens can result in revocation bypass Package: src:keystone; Maintainer for src:keystone is Debian OpenStack <team+openstack@trackerdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Wed, 18 May 201 ...

CWE-284 http://www.openwall.com/lists/oss-security/2016/05/17/10 https://security.openstack.org/ossa/OSSA-2016-008.html https://review.openstack.org/#/c/311886/http://www.openwall.com/lists/oss-security/2016/05/17/11 https://bugs.launchpad.net/keystone/+bug/1577558 http://www.securityfocus.com/bid/90728 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=824683 https://nvd.nist.gov

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CVE-2016-4911

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