CVE-2012-4066
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 internal message protocol for Walrus in Eucalyptus 3.2.0 and earlier does not require signatures for unspecified request headers, which allows attackers to (1) delete or (2) upload snapshots.
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 confidenceThe internal message protocol for Walrus (the storage service) in Eucalyptus 3.2.0 and earlier does not require cryptographic signatures for unspecified request headers. This allows unauthenticated attackers to send requests that bypass signature validation, enabling unauthorized snapshot deletion and upload operations.
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<= 3.2.0= 1.0= 1.1= 1.2= 1.3= 1.4= 1.5.1= 1.5.2= 1.6= 1.6.2= 2.0= 2.0.0CVSS 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 if Eucalyptus is installedCheck for Eucalyptus installation by looking for eucalyptus packages (dpkg -l | grep eucalyptus or rpm -qa | grep eucalyptus) or common installation directories such as /etc/eucalyptus, /usr/lib/eucalyptus, or /var/lib/eucalyptusAffected if Eucalyptus software is found on the system
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Determine installed Eucalyptus versionRun command: eucalyptus-cloud --version or check /etc/eucalyptus/eucalyptus-version, or use package manager to query version (dpkg -l eucalyptus-cloud or rpm -q eucalyptus-cloud)Affected if The installed version is 3.2.0 or earlier, or matches any of these specific versions: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5.1, 1.5.2, 1.6, 1.6.2, 2.0, 2.0.0
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Verify Walrus service is enabledCheck if Walrus is configured and running: ps aux | grep walrus, service walrus status, or examine Eucalyptus configuration files in /etc/eucalyptus for walrus-related settingsAffected if Walrus service is running or configured to run (the vulnerability applies to the Walrus storage service)
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Inspect Walrus configuration for signature validationExamine Eucalyptus cloud configuration (eucalyptus.conf or walrus.conf in /etc/eucalyptus) for settings related to request signature validation or security headers. Look for parameters controlling request authentication or header verification.Affected if Signature validation is not enforced or is configured to allow unsigned requests for unspecified headers (compare configuration against documentation for version in use)
The environment is affected if Eucalyptus version is 3.2.0 or earlier (or one of the specific affected 1.x/2.x versions) AND the Walrus storage service is enabled and running, with signature validation not properly enforced for request headers.
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 to Eucalyptus version 3.2.1 or later which includes proper signature requirements. If upgrading is not feasible, implement network-level access controls to restrict access to the Walrus service internal ports.
- Consultation8.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2012-4066 — 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-2012-4066 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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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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