Security readout for executives and security teams
Plain-English summary
CVE-2017-16100 affects the dns-sync Node.js module, a synchronous DNS resolver. The record says all versions are vulnerable when untrusted input reaches resolve(), allowing command injection. For leaders, the concern is server-side code execution risk in applications that depend on this package and pass user-controlled hostnames or similar values into it.
Executive priority
Treat this as a targeted dependency risk, not an enterprise-wide emergency. Prioritize review in externally reachable Node.js services because command injection can be severe, but the sources provide no active-exploitation evidence or patch details.
Technical view
dns-sync exposes a resolve() method that can be command-injection prone when called with untrusted user input. The source bundle lists all versions of the dns-sync node module as affected and maps the issue to CWE-94. No CVSS score, fixed version, or vendor mitigation is provided in the bundle.
Likely exposure
Exposure is likely limited to Node.js applications that include dns-sync and call resolve() with attacker-influenced input. Internal-only use with fixed, trusted hostnames is lower risk, but still requires dependency review because all listed versions are affected.
Exploitation context
The bundle does not cite active exploitation, and KEV is false. Exploitation should not be assumed. The known condition is untrusted input entering resolve(), which could permit command injection according to the CVE description.
Researcher notes
Evidence is sparse: the CVE record identifies the vulnerable method, affected package, all versions, and CWE-94, but omits CVSS, patch status, and exploitation telemetry. Focus validation on data flow into resolve() and whether the package is reachable from attacker-controlled inputs.
Mitigation direction
- Inventory applications and services that depend on dns-sync.
- Remove or replace dns-sync where untrusted input can reach resolve().
- Restrict resolve() inputs to trusted, allowlisted hostnames only.
- Check upstream project and advisory pages for any maintained remediation guidance.
- Prioritize internet-facing services and request-driven DNS lookup paths.
Validation and detection
- Search dependency manifests and lockfiles for dns-sync usage.
- Review code paths calling resolve() for user-controlled input.
- Confirm exposed routes cannot pass raw request data into DNS resolution.
- Document whether each use is trusted, allowlisted, or removed.
- Track unresolved findings until vendor guidance or replacement is complete.
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.
CWE-94: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2017-16100 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
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/skoranga/node-dns-sync/issues/5CVE reference · x_refsource_MISC
- https://nodesecurity.io/advisories/523CVE reference · x_refsource_MISC
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.
Improper Control of Generation of Code ('Code Injection')
Improper Control of Generation of Code ('Code Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.