CVE-2012-4063
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 Apache Santuario configuration in Eucalyptus before 3.1.1 does not properly restrict applying XML Signature transforms to documents, which allows remote attackers to cause a denial of service via unspecified vectors.
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 · moderate confidenceThis vulnerability exists in the Apache Santuario XML security library configuration within Eucalyptus cloud computing platform versions before 3.1.1. The configuration fails to properly restrict XML Signature transforms, allowing maliciously crafted XML signatures to cause denial of service through unspecified vectors, likely via resource exhaustion or infinite loop conditions during XML processing.
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<= 3.1.0= 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
- None
- Availability
- Partial
AV:N/AC:L/Au:N/C:N/I:N/A:P
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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Check if Eucalyptus is installedRun 'rpm -qa | grep eucalyptus' or 'dpkg -l | grep eucalyptus' depending on your package manager, or look for Eucalyptus installation directories.Affected if Eucalyptus is not installed, then not affected by this CVE.
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Determine installed Eucalyptus versionRun 'eucalyptus-version' command if available, or check /etc/eucalyptus/eucalyptus-version file, or query the package manager for the installed eucalyptus version.Affected if Version matches any of: <= 3.1.0, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5.1, 1.5.2, 1.6, 1.6.2, 2.0, or 2.0.0.
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Locate Apache Santuario XML security configurationSearch for Santuario configuration files within the Eucalyptus installation directory, typically in conf/ or config/ subdirectories. Look for files named 'santuario-config.xml' or similar XML security configuration files.Affected if No Santuario configuration file exists, then the specific vulnerability configuration may not be present.
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Inspect XML Signature transform settingsOpen the Santuario configuration file and examine the XML Signature transform settings. Look for elements controlling transforms, particularly those governing allowed or restricted transform algorithms.Affected if The configuration does NOT restrict XML Signature transforms, or allows unrestricted transforms, indicating the vulnerable configuration is present.
The environment is affected if Eucalyptus version is 3.1.0 or earlier, or any 1.x or 2.x version listed as affected, AND the Santuario XML security configuration allows unrestricted XML Signature transforms.
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 Eucalyptus to version 3.1.1 or later which contains the fixed Apache Santuario configuration, or manually restrict XML Signature transforms in the Santuario configuration to prevent abuse.
- Consultation4.0 h
- Implementation3.0 h
- Testing6.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2012-4063 — 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-2012-4063 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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