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Unauthorized File Access in harp

Moderate severity GitHub Reviewed Published Jun 13, 2019 to the GitHub Advisory Database • Updated Sep 7, 2023

Package

npm harp (npm)

Affected versions

< 0.40.3

Patched versions

0.40.3

Description

All versions of harp are vulnerable to Unauthorized File Access. If a symlink in the project's base directory points to a file outside of the directory, the file is served. This could allow an attacker to access sensitive files on the server.

Recommendation

No fix is currently available. Consider using an alternative module until a fix is made available.

References

Reviewed Jun 13, 2019
Published to the GitHub Advisory Database Jun 13, 2019
Last updated Sep 7, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS score

0.131%
(49th percentile)

Weaknesses

CVE ID

CVE-2019-5438

GHSA ID

GHSA-6fmm-47qc-p4m4

Source code

No known source code
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