Security readout for executives and security teams
Plain-English summary
CVE-2018-7039 is a remotely triggerable parsing bug in CCN-lite 2.0.0 Beta. Crafted TLV data with inconsistent length information can cause a buffer overflow, likely crashing the service. The public record does not provide a CVSS score, confirmed patch, or evidence of active exploitation.
Executive priority
Prioritize inventory over emergency response unless CCN-lite 2.0.0 Beta is internet-exposed or used in critical networking research infrastructure. The main evidenced business impact is service disruption; broader impact remains unspecified in the sources.
Technical view
The flaw is in ccnl_ndntlv_prependBlob in ccnl-pkt-ndntlv.c. Incorrect integer typing can produce a negative third argument when crafted NDN TLV data contains inconsistent lengths. The CVE describes denial of service and possible unspecified impact, but does not substantiate code execution.
Likely exposure
Exposure is likely limited to environments running CCN-lite 2.0.0 Beta, especially if it parses untrusted NDN/CCN TLV traffic from remote peers. The source bundle does not identify CPEs, downstream products, or broader affected versions.
Exploitation context
The CVE states remote attackers can trigger the issue with crafted TLV data. KEV is false, and the provided sources do not show active exploitation, public exploit maturity, or weaponized use in the wild.
Researcher notes
Evidence is sparse: the CVE description and GitHub issue reference identify the vulnerable function and malformed length scenario, but no CVSS, CWE, affected CPEs, fixed version, or exploit telemetry is provided in the source bundle.
Mitigation direction
- Check upstream CCN-lite guidance and releases for a confirmed fix.
- Remove or replace CCN-lite 2.0.0 Beta where it is not required.
- Restrict CCN-lite exposure to trusted networks where operationally feasible.
- Monitor CCN-lite services for crashes, restarts, or parsing faults.
- Prefer supported non-beta builds if vendor guidance confirms remediation.
Validation and detection
- Search asset inventory and SBOMs for CCN-lite 2.0.0 Beta.
- Identify services that parse untrusted NDN or CCN TLV traffic.
- Review source or package contents for ccnl-pkt-ndntlv.c.
- Check logs for crashes near ccnl_ndntlv_prependBlob or TLV parsing.
- Confirm any remediation against upstream project issue and release notes.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2018-7039 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/cn-uofbasel/ccn-lite/issues/191CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.