CVE-2014-6258
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 · uneditedAn unspecified endpoint in Zenoss Core through 5 Beta 3 allows remote attackers to cause a denial of service (CPU consumption) by triggering an arbitrary regular-expression match attempt, aka ZEN-15411.
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 is a Regular Expression Denial of Service (ReDoS) vulnerability in Zenoss Core through version 5 Beta 3. An unspecified endpoint allows remote attackers to cause CPU consumption by triggering arbitrary regex match attempts. The vulnerability stems from unbounded or inefficient regex processing on user-controlled input.
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<= 5.0.0= 2.4.0= 2.4.5= 2.5.0= 2.5.1= 2.5.2= 3.0.0= 3.0.1= 3.0.2= 3.0.3= 3.1.0= 3.2.0CVSS 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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Verify Zenoss Core is installedCheck for Zenoss processes running on the system using commands like 'ps aux | grep -i zenoss' or look for Zenoss installation directories such as /opt/zenoss or /usr/local/zenossAffected if Zenoss Core is found running or installed on the system
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Identify the installed Zenoss Core versionRun 'zenhub --version' or check the version file typically located in the Zenoss installation directory, or inspect the /opt/zenoss/VERSION file if it existsAffected if The installed version is one of: 2.4.0, 2.4.5, 2.5.0, 2.5.1, 2.5.2, 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.1.0, 3.2.0, or any version <= 5.0.0 (including all 4.x releases)
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Confirm web interface or API endpoints are exposedCheck if the Zenoss web service (typically running on port 8080 or 8443) is listening on accessible network interfaces using 'netstat -tlnp | grep -E "8080|8443"' or review firewall rules to determine if these ports are accessible from external sourcesAffected if The Zenoss web interface port (8080/8443) is bound to a publicly accessible network interface or is not blocked by firewall rules
You are affected if Zenoss Core version 2.4.0 through 5.0.0 is installed and the web/API interface is network-accessible, as the ReDoS can be triggered via unspecified endpoints processing user-controlled regex input.
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 a patched version of Zenoss Core. If upgrade is not immediately feasible, implement network-level access controls and rate limiting on the application to reduce attack surface while planning the upgrade.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-6258 — 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-2014-6258 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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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.
- 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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