Description

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability in Mozilla Convict.

This allows an attacker to inject attributes that are used in other components, or to 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.

This issue affects Convict: before 6.2.4.

Classification

CVE ID: CVE-2023-0163

CVSS Base Severity: HIGH

CVSS Base Score: 8.4

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products

Vendor: Mozilla

Product: Convict

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 11.44% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://github.com/mozilla/node-convict/issues/410
https://github.com/mozilla/node-convict/security/advisories/GHSA-4jrm-c32x-w4jf

Timeline