CVE-2016-4911

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Summary

CVECVE-2016-4911
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-06-13 14:59:07 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Problem Types: CWE-284 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
2.0[email protected]Primary4AV:N/AC:L/Au:S/C:N/I:P/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
Single
Confidentiality
None
Integrity
Partial
Availability
None

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Keystone Openstack Identity 9.0.0.0 rc1 All All
Application Keystone Openstack Identity 9.0.0.0 rc2 All All
Application Keystone Openstack Identity 9.0.0.0 rc3 All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
OpenStack Keystone CVE-2016-4911 Security Bypass Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Bug #1577558 “[OSSA 2016-008] v2.0 fernet tokens audit ids are i...” : Bugs : OpenStack Identity (keystone) af854a3a-2127-422b-91ae-364da2661108 bugs.launchpad.net Vendor Advisory
OSSA-2016-008: Incorrect Audit IDs in Keystone Fernet Tokens can result in revocation bypass — OpenStack Security Advisories 2014.2.0.dev134 documentation af854a3a-2127-422b-91ae-364da2661108 security.openstack.org Patch, Vendor Advisory
oss-security - CVE request for vulnerability in OpenStack Keystone af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
oss-security - Re: CVE request for vulnerability in OpenStack Keystone af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
Gerrit Code Review af854a3a-2127-422b-91ae-364da2661108 review.openstack.org Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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