CVE-2014-2237
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThe memcache token backend in OpenStack Identity (Keystone) 2013.1 through 2.013.1.4, 2013.2 through 2013.2.2, and icehouse before icehouse-3, when issuing a trust token with impersonation enabled, does not include this token in the trustee's token-index-list, which prevents the token from being invalidated by bulk token revocation and allows the trustee to bypass intended access restrictions.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceOpenStack Keystone's memcache token backend fails to add trust tokens (issued with impersonation enabled) to the trustee's token-index-list, preventing bulk token revocation from invalidating these tokens and allowing trustees to bypass intended access restrictions.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 2013.1= 2013.1.1= 2013.1.2= 2013.1.3= 2013.1.4= 2013.2.2CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Authentication
- None
- Confidentiality
- None
- Integrity
- Partial
- Availability
- None
AV:N/AC:L/Au:N/C:N/I:P/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Keystone versionRun 'keystone --version' or check the installed package version (e.g., rpm -q keystone, dpkg -l python-keystoneclient)Affected if The installed version is 2013.1, 2013.1.1, 2013.1.2, 2013.1.3, 2013.1.4, or 2013.2.2
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Verify memcache token backend is in useInspect /etc/keystone/keystone.conf and look for the [token] section; check if 'driver = keystone.token.backends.memcache' is setAffected if The token driver is set to memcache (or keystone.token.backends.memcache)
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Confirm trust impersonation is enabledCheck existing trusts via the Keystone API: 'keystone trust-list' or inspect trust objects for the 'impersonation' flag set to trueAffected if Trusts exist with impersonation=True, and these trusts generate tokens that bypass revocation
You are affected if you run a vulnerable Keystone version (2013.1.x or 2013.2.2), use the memcache token backend, and have trust tokens with impersonation enabled, as these tokens will not be invalidated during bulk revocation.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpgrade Keystone to version icehouse-3 or later. Until then, disable trust token impersonation or implement alternative token revocation mechanisms for trust tokens.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-2237 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2014-2237 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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