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cnlh nps vulnerable to file overwrite by local user

Moderate severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Apr 17, 2025

Package

gomod ehang.io/nps (Go)

Affected versions

< 0.23.2

Patched versions

0.23.2

Description

lib/install/install.go in cnlh nps prior to 0.23.2 uses 0777 permissions for /usr/local/bin/nps and/or /usr/bin/nps, leading to a file overwrite by a local user.

References

Published by the National Vulnerability Database Aug 16, 2019
Published to the GitHub Advisory Database May 24, 2022
Reviewed Apr 17, 2025
Last updated Apr 17, 2025

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
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
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:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(34th percentile)

Weaknesses

Incorrect Permission Assignment for Critical Resource

The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. Learn more on MITRE.

CVE ID

CVE-2019-15119

GHSA ID

GHSA-2vp2-8m5j-4rjx

Source code

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