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Prototype Pollution in convict

High severity GitHub Reviewed Published Apr 20, 2022 in mozilla/node-convict • Updated Jan 27, 2023

Package

npm convict (npm)

Affected versions

< 6.2.3

Patched versions

6.2.3

Description

Impact

  • An attacker can inject attributes that are used in other components
  • An attacker can override existing attributes with ones that have incompatible type, which may lead to a crash.

The main use case of Convict is for handling server-side configurations written by the admins owning the servers, and not random users. So it's unlikely that an admin would deliberately sabotage their own server. Still a situation can happen where an admin not knowledgeable about JavaScript could be tricked by an attacker into writing the malicious JavaScript code into some config files.

Patches

The problem is patched in [email protected]. Users should upgrade to [email protected].

Workarounds

No way for users to fix or remediate the vulnerability without upgrading

References

For more information

If you have any questions or comments about this advisory:
add your question as a comment in #384

References

@clouserw clouserw published to mozilla/node-convict Apr 20, 2022
Published to the GitHub Advisory Database Apr 20, 2022
Reviewed Apr 20, 2022
Published by the National Vulnerability Database May 1, 2022
Last updated Jan 27, 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
Local
Attack complexity
Low
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:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

0.341%
(71st percentile)

Weaknesses

CVE ID

CVE-2022-22143

GHSA ID

GHSA-x2w5-725j-gf2g

Source code

Credits

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