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OwncloudApplication

CVE-2014-2052

CRITICAL · 9.8 CVSS v3.1 Published 2020-02-11
Fix available
A fix is available. Upgrade to 5.0.15 / 6.0.2 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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 · unedited
Zend Framework, as used in ownCloud Server before 5.0.15 and 6.0.x before 6.0.2, allows remote attackers to read arbitrary files, cause a denial of service, or possibly have other impact via an XML External Entity (XXE) attack.

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 confidence

Zend Framework in ownCloud Server versions before 5.0.15 and 6.0.2 contains an XML External Entity (XXE) vulnerability that allows remote attackers to read arbitrary files on the server, cause denial of service, or potentially execute other attacks through malicious XML input.

MitigationUpgrade ownCloud Server to version 5.0.15 or later, or 6.0.2 or later, which includes the patched Zend Framework with proper XXE protection. If immediate upgrade is not possible, disable or restrict XML parsing in affected components.

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
OwncloudApplication
Affected:< 5.0.15
Owncloud ServerApplication
Affected:>= 6.0.0, < 6.0.2

CVSS 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
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

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 checks

Work through these to decide whether this CVE applies to you.

  1. Confirm ownCloud Server installation
    Check for ownCloud Server by looking for its web directory (typically at /var/www/owncloud or in the web server document root), or by accessing the ownCloud web interface and checking the version information page.
    Affected if ownCloud Server is not found on the system, this CVE does not apply.
  2. Identify ownCloud Server version
    Access the ownCloud admin panel (usually at /settings/user or /settings/admin) to view the server version, or check the version.php file in the ownCloud installation directory (owncloud/version.php).
    Affected if The installed version is less than 5.0.15, or greater than or equal to 6.0.0 but less than 6.0.2.
  3. Locate Zend Framework component
    Find the Zend library directory within the ownCloud installation (typically at owncloud/3rdparty/Zend or similar path), and note the Zend Framework version if visible in library files.
    Affected if Zend Framework is present and used for XML parsing within ownCloud.
  4. Verify XML parsing is active
    Check ownCloud configuration files (config/config.php) for any XML-related settings, and look for apps or features that process XML data (such as carddav, caldav, or import/export features).
    Affected if XML parsing functionality is enabled or available in the ownCloud deployment.

The environment is affected if ownCloud Server version is below 5.0.15 or falls between 6.0.0 and 6.0.2, and XML parsing features are in use.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

dbcve · scoped
Upgrade available Upgrade to 5.0.15 / 6.0.2 or later
Fixed in 5.0.156.0.2
Interim mitigation

Upgrade ownCloud Server to version 5.0.15 or later, or 6.0.2 or later, which includes the patched Zend Framework with proper XXE protection. If immediate upgrade is not possible, disable or restrict XML parsing in affected components.

Recommended fix High confidence

ownCloud 5.0.15+ or ownCloud Server 6.0.2+

  1. 1. Backup your current ownCloud installation and database before proceeding
  2. 2. Identify your current ownCloud version in the administrative interface or via the occ command
  3. 3. For ownCloud 5.x: Upgrade to version 5.0.15 or later (preferably latest 5.0.x release)
  4. 4. For ownCloud Server 6.x: Upgrade to version 6.0.2 or later (preferably latest 6.0.x release)
  5. 5. Use the official ownCloud upgrade process: disable all third-party apps, set maintenance mode, replace files, run database migrations
  6. 6. After upgrade, verify the ownCloud version shows the patched release
  7. 7. Test critical functionality (file upload/download, sharing, calendar, contacts)
Caveat Review ownCloud upgrade notes for your version range - major version upgrades may have breaking changes in APIs or third-party app compatibility

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Owncloud Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing3.0 h
  • Review / QA2.0 h
10.0 hours of engineering $1,750
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2014-2052 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • 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
  • No spam, self-promotion, credentials, or personal data