CVE-2018-6953
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 · uneditedIn CCN-lite 2, the Parser of NDNTLV does not verify whether a certain component's length field matches the actual component length, which has a resultant buffer overflow and out-of-bounds memory accesses.
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 NDNTLV parser in CCN-lite 2 fails to validate that component length fields match the actual component length before processing, allowing an attacker to trigger buffer overflows and out-of-bounds memory accesses by providing malformed length values in NDN packets.
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= 2.0.0CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/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 checksWork through these to decide whether this CVE applies to you.
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Identify CCN-lite installation and versionLocate the CCN-lite installation on your system and query its version. Common methods include: running 'ccn-lite -v' or 'ccn-lite-version', checking package manager output (dpkg -l ccn-lite or similar), or inspecting version information in source/binary files. Compare the installed version to the affected version 2.0.0.Affected if The installed CCN-lite version is exactly 2.0.0
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Confirm NDNTLV parser is in useReview the CCN-lite configuration or runtime settings to determine whether the NDNTLV parser module is enabled. This may be visible in configuration files, build settings, or runtime flags. Look for references to 'NDNTLV' or 'NDN' parsing in the configuration.Affected if NDNTLV parsing is enabled or configured in the CCN-lite setup
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Determine if the system processes external NDN packetsExamine how CCN-lite is deployed: check if it binds to network interfaces, listens on NDN ports, or accepts NDN packets from remote sources. Inspect running processes, service configurations, or firewall rules to see if inbound NDN traffic is possible.Affected if CCN-lite is configured to receive or process NDN packets from untrusted network sources
You are affected if CCN-lite version 2.0.0 is installed, the NDNTLV parser is enabled, and the system processes NDN packets from external sources.
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 strict validation of length fields against actual component data before any memory operations; add bounds checking throughout the NDNTLV parser to ensure all read operations stay within allocated buffers.
- Consultation8.0 h
- Implementation12.0 h
- Testing12.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $10,624.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-6953 — 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-2018-6953 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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