Ios XrOperating system · Cisco
CVE-2014-3322
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 · uneditedCisco IOS XR 4.3(.2) and earlier on ASR 9000 devices does not properly perform NetFlow sampling of IP packets, which allows remote attackers to cause a denial of service (chip and card hangs) via malformed (1) IPv4 or (2) IPv6 packets, aka Bug ID CSCuo68417.
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 vulnerability exists in Cisco IOS XR version 4.3(.2) and earlier running on ASR 9000 routers. The NetFlow sampling functionality fails to properly handle malformed IPv4 or IPv6 packets, causing hardware (chip and line card) hangs that result in denial of service.
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
Ios XrOperating system
<= 4.3.2= 4.3.0= 4.3.1
Asr 9000 Rsp440 RouterHardware / appliance
all versions
Asr 9001Hardware / appliance
all versions
Asr 9006Hardware / appliance
all versions
Asr 9010Hardware / appliance
all versions
Asr 9904Hardware / appliance
all versions
Asr 9912Hardware / appliance
all versions
Asr 9922Hardware / appliance
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
- Adjacent
- Complexity
- Low
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Complete
AV:A/AC:L/Au:N/C:N/I:N/A:C
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 Cisco IOS XR versionExecute 'show version' or 'admin show version' on the router CLIAffected if Version displays as 4.3.0, 4.3.1, 4.3.2, or any release earlier than 4.3.2 (such as 4.2.x, 4.1.x, etc.)
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Confirm ASR 9000 series hardwareExecute 'show inventory' or 'show platform' to identify the router modelAffected if Hardware is an ASR 9000 series router including ASR 9001, 9006, 9010, 9904, 9912, 9922, or ASR 9000 with RSP440 line card
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Verify NetFlow sampling is enabledExecute 'show flow' or 'show flow monitor' or 'show flow exporter' to check for active NetFlow configurationAffected if NetFlow sampling functionality is configured and active on the device
A system is affected if it runs Cisco IOS XR version 4.3.2 or earlier on an ASR 9000 series platform AND has NetFlow sampling enabled.
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 Cisco IOS XR to a version that addresses Bug ID CSCuo68417. If immediate patching is not possible, consider disabling NetFlow sampling or implementing ACL filters to block malformed packets at network edges.
Fix this in Ios Xr
Scoped from the published advisory
- Consultation8.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $10,240.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-3322 — 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-2014-3322 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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