Network Analysis Module SoftwareOperating system · Cisco
CVE-2016-1370
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 Prime Network Analysis Module (NAM) before 6.2(1-b) miscalculates IPv6 payload lengths, which allows remote attackers to cause a denial of service (mond process crash and monitoring outage) via crafted IPv6 packets, aka Bug ID CSCuy37324.
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 confidenceCisco Prime Network Analysis Module versions prior to 6.2(1-b) contain a flaw in IPv6 packet handling where the software miscalculates payload lengths in crafted IPv6 packets. When processing specially constructed IPv6 packets with malformed length fields, this causes the mond monitoring process to crash, resulting in a denial of service condition and monitoring outage.
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
Network Analysis Module SoftwareOperating system
= 4.0.0= 4.1.0CVSS 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
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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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Confirm Cisco Prime Network Analysis Module is installedLocate the NAM software installation and identify the product name. Typically found via system inventory, installed software list, or by checking for the 'nam' command-line utility.Affected if The product Cisco Prime Network Analysis Module is present on the system.
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Check installed NAM software versionUse the product's CLI or web interface to retrieve the software version. Common commands include 'show version' or checking the About page in the web UI.Affected if The installed version is exactly 4.0.0 or 4.1.0.
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Verify IPv6 is enabled on the NAM applianceCheck the network configuration settings within the NAM management interface or via CLI command such as 'show running-config' to see if IPv6 interfaces or features are configured.Affected if IPv6 is enabled and the appliance is configured to process IPv6 traffic.
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Examine mond process status and crash logsAccess system logs or use commands to view the mond monitoring process status. Look for recent crash events or restart logs, particularly those mentioning IPv6 packet processing failures.Affected if The mond process has crashed or shows instability related to IPv6 packet handling.
A user is affected if Cisco Prime Network Analysis Module version 4.0.0 or 4.1.0 is installed, IPv6 is enabled, and the mond process exhibits crashes or instability when processing IPv6 traffic.
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 Prime Network Analysis Module to version 6.2(1-b) or later to remediate this vulnerability. In the interim, consider filtering or blocking untrusted IPv6 traffic at network boundaries.
Fix this in Network Analysis Module Software
Scoped from the published advisory
- Consultation4.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-1370 — 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-2016-1370 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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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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