Security readout for executives and security teams
Plain-English summary
CVE-2017-16029 affects the hostr Node module, a simple web server for serving the current directory. Versions 2.3.5 and earlier can let a remote requester read files outside that directory using directory traversal in GET paths. Business risk depends on whether hostr is present, reachable, and near sensitive files.
Executive priority
Treat as a focused dependency exposure review, not a broad emergency. Prioritize internet-facing or shared environments where hostr may expose credentials, source code, or configuration files.
Technical view
The vulnerability is CWE-22 directory traversal in hostr <=2.3.5. The CVE description states GET URL paths containing parent-directory traversal can access files outside the intended current directory. No CVSS score, patch details, or active exploitation evidence is provided in the source bundle.
Likely exposure
Exposure is most likely in Node.js projects that used hostr <=2.3.5 for local static serving and accidentally exposed it to untrusted users or networks.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation. The issue is easy to understand conceptually, but impact requires a reachable hostr service and readable sensitive files outside the served directory.
Researcher notes
Evidence is limited to the CVE description and historical advisories. The affected product is the hostr Node module <=2.3.5, with CWE-22 behavior on GET paths. Do not assume broader HackerOne platform exposure from the vendor field alone.
Mitigation direction
- Inventory Node.js dependencies for hostr 2.3.5 or earlier.
- Remove hostr from production paths where it is not required.
- Check upstream advisory or maintainer guidance before choosing a fixed version or replacement.
- Restrict any hostr service to trusted networks until remediated.
- Ensure served working directories and nearby paths do not contain secrets.
Validation and detection
- Review SBOMs and lockfiles for hostr versions <=2.3.5.
- Confirm no externally reachable service is running vulnerable hostr.
- Review access logs for suspicious directory traversal path patterns.
- Verify remediation removed or replaced vulnerable hostr deployments.
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-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection 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 lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2017-16029 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/henrytseng/hostr/issues/8CVE reference · x_refsource_MISC
- https://nodesecurity.io/advisories/303CVE 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 Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.