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CVE Record

CVE-2018-6953: In CCN-lite 2, the Parser of NDNTLV does not verify whether a certain component's length field matches the...

In 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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2018-6953 is a memory-safety flaw in CCN-lite 2. A malformed NDNTLV component can make the parser trust an incorrect length value, leading to buffer overflow or out-of-bounds memory access. Public sources do not provide a CVSS score, confirmed affected versions beyond CCN-lite 2, or confirmed exploitation.

Executive priority

Treat this as a targeted exposure review rather than an emergency unless CCN-lite 2 is deployed in a reachable parser role. Prioritize inventory and vendor guidance because the public record lacks severity scoring, exploit confirmation, and remediation detail.

Technical view

The NDNTLV parser in CCN-lite 2 fails to verify that a component length field matches the actual component length. The published CVE describes resultant buffer overflow and out-of-bounds memory accesses. The source bundle does not identify a patch, commit, workaround, CWE, CVSS vector, or affected CPE entries.

Likely exposure

Exposure is most likely where CCN-lite 2 processes untrusted or externally supplied NDNTLV data. Organizations without CCN-lite or NDNTLV parsing paths are unlikely to be affected. The provided sources do not establish common deployment patterns or internet-facing exposure.

Exploitation context

CISA KEV status is false, and the provided sources do not cite active exploitation or public weaponization. The bug class is potentially serious because memory corruption can affect availability and sometimes code execution, but this CVE’s real-world exploitability is not established by the bundle.

Researcher notes

The core evidence is narrow: a CVE description and a confirming GitHub issue. The affected entry in the bundle is n/a, despite the description naming CCN-lite 2. Avoid assuming downstream products, fixed versions, or exploitability without additional vendor or repository evidence.

Mitigation direction

  • Inventory systems and applications for CCN-lite 2 usage.
  • Review the GitHub issue and vendor project history for fixed releases or commits.
  • Upgrade or patch only according to verified CCN-lite project guidance.
  • Restrict untrusted NDNTLV input reaching affected components where feasible.
  • Disable unused CCN-lite functionality in exposed services.

Validation and detection

  • Check SBOMs, package manifests, and embedded dependencies for CCN-lite 2.
  • Identify whether affected deployments parse NDNTLV data from untrusted sources.
  • Review parser-related crash logs for unexplained memory faults.
  • Use controlled regression or fuzz testing to confirm malformed NDNTLV is rejected safely.
  • Track the CVE record and GitHub issue for updated remediation evidence.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2018-6953 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.