Skip to content

angular-server-side-configuration information disclosure vulnerability in monorepo with node.js backend

Critical
kyubisation published GHSA-gwvm-vrp4-4pp5 Mar 24, 2023

Package

npm angular-server-side-configuration (npm)

Affected versions

>= 15.0.0, < 15.1.0

Patched versions

15.1.0

Description

Impact

angular-server-side-configuration detects used environment variables in TypeScript (.ts) files during build time of an Angular CLI project. The detected environment variables are written to a ngssc.json file in the output directory.
During deployment of an Angular based app, the environment variables based on the variables from ngssc.json are inserted into the apps index.html (or defined index file).

With version 15 the environment variable detection was widened to the entire project, relative to the angular.json file from the Angular CLI. In a monorepo setup, this could lead to environment variables intended for a backend/service to be detected and written to the ngssc.json, which would then be populated and exposed via index.html.

This has NO IMPACT, in a plain Angular project that has no backend component.

Patches

Vulnerability has been mitigated in 15.1.0, by adding an option searchPattern which restricts the detection file range by default.

# Update via npm
npm update angular-server-side-configuration
## Or more specific
npm install [email protected]

# Update via pnpm
pnpm update angular-server-side-configuration
## Or more specific
pnpm add [email protected]

# Update via yarn
yarn update angular-server-side-configuration
## Or more specific
yarn add [email protected]

Workarounds

Manually edit or create ngssc.json or run a script after ngssc.json generation

References

Severity

Critical

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
Changed
Confidentiality
High
Integrity
Low
Availability
Low

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:C/C:H/I:L/A:L

CVE ID

CVE-2023-28444

Weaknesses

Credits