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closure-util downloads Resources over HTTP

High severity GitHub Reviewed Published Feb 18, 2019 to the GitHub Advisory Database • Updated Sep 8, 2023

Package

npm closure-util (npm)

Affected versions

<= 2.0.0-beta.1

Patched versions

None

Description

Affected versions of closure-util insecurely download an executable over an unencrypted HTTP connection.

In scenarios where an attacker has a privileged network position, it is possible to intercept the response and replace the executable with a malicious one, resulting in code execution on the system running closure-util.

Recommendation

To mitigate this issue:

  1. Install the package using npm's --ignore-scripts flag.
  2. Navigate to the package directory, and open default-config.json in a text editor
  3. Change the download URLs in the compiler_url and library_url to https equivalents
  4. run npm i in the package directory.

References

Published to the GitHub Advisory Database Feb 18, 2019
Reviewed Jun 16, 2020
Last updated Sep 8, 2023

Severity

High

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
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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.
(81st percentile)

Weaknesses

Missing Encryption of Sensitive Data

The product does not encrypt sensitive or critical information before storage or transmission. Learn more on MITRE.

CVE ID

CVE-2016-10583

GHSA ID

GHSA-2hpj-g53m-9gj6

Source code

No known source code
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