CVE-2016-4911
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Mitigation details
CVE-2016-4911 NameCVE-2016-4911 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. SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub…
CVE-2016-4911
| Name | CVE-2016-4911 |
| 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 824683 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| keystone (PTS) | bullseye | 2:18.0.0-3+deb11u1 | fixed |
| bullseye (security) | 2:18.1.0-1+deb11u3 | fixed | |
| bookworm, bookworm (security) | 2:22.0.2-0+deb12u1 | fixed | |
| trixie (security), trixie | 2:27.0.0-3+deb13u1 | fixed | |
| forky, sid | 2:29.0.1-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| keystone | source | wheezy | (not affected) | |||
| keystone | source | jessie | (not affected) | |||
| keystone | source | (unstable) | 2:9.0.0-2 | 824683 |
Notes
[jessie] - keystone <not-affected> (affects only 9.0.0)
[wheezy] - keystone <not-affected> (affects only 9.0.0)
https://launchpad.net/bugs/1577558
Apply commands
[jessie] - keystone <not-affected> (affects only 9.0.0)[wheezy] - keystone <not-affected> (affects only 9.0.0)https://launchpad.net/bugs/1577558OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2:9.0.0-2 |
| sid | Fixed | 2:9.0.0-2 |
| forky | Fixed | 2:9.0.0-2 |
| bullseye | Fixed | 2:9.0.0-2 |
| bookworm | Fixed | 2:9.0.0-2 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | keystone | >=9.0.0,<9.0.1 | 9.0.1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| keystone | openstack_identity | 9.0.0.0 | |
References
- 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://github.com/openstack/keystone
- https://github.com/pypa/advisory-database/tree/main/vulns/keystone/PYSEC-2016-38.yaml
- https://review.openstack.org/#/c/311886
- https://security-tracker.debian.org/tracker/CVE-2016-4911
CWEs
CWE-284
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.