Unified Presence ServerApplication · Cisco
CVE-2014-3328
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 Intercluster Sync Agent Service in Cisco Unified Presence Server allows remote attackers to cause a denial of service via a TCP SYN flood, aka Bug ID CSCun34125.
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 Intercluster Sync Agent Service in Cisco Unified Presence Server is vulnerable to a denial-of-service attack via TCP SYN flood. An attacker can send a high volume of TCP SYN packets to exhaust server resources and prevent legitimate connections.
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
Unified Presence ServerApplication
all versionsCVSS 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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Identify the installed productRun 'show version' or check system documentation to confirm the system is Cisco Unified Presence ServerAffected if The system is Cisco Unified Presence Server and all versions are affected by this CVE
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Verify Intercluster Sync Agent Service statusCheck if the Intercluster Sync Agent Service is running via 'show process' or service management interfaceAffected if The Intercluster Sync Agent Service is enabled and running - this is the vulnerable component
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Check listening TCP portsRun 'show interface' or 'netstat -an | grep LISTEN' to identify TCP ports exposed by the Intercluster Sync Agent ServiceAffected if The service is listening on TCP ports and accessible to attackers
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Assess SYN flood protectionReview current SYN flood mitigation status via 'show rate-limit' or check if SYN cookies are enabled in the TCP stackAffected if No SYN flood protection mechanism is configured or enabled - the system is vulnerable to exploitation
If the system is Cisco Unified Presence Server with the Intercluster Sync Agent Service running and no SYN flood protection is in place, it is affected by this CVE.
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 dataImplement SYN flood protection mechanisms such as SYN cookies, TCP connection rate limiting, or deploy a DDoS mitigation solution. Apply any available Cisco patches for this vulnerability.
Fix this in Unified Presence Server
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-3328 — 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-2014-3328 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
- No spam, self-promotion, credentials, or personal data