CVE-2020-7617: 
JavaScript vulnerability analysis and mitigation

The vulnerability CVE-2020-7617 affects the ini-parser package through version 0.0.2. This security flaw was discovered and disclosed on April 1, 2020, and involves a Prototype Pollution vulnerability that allows attackers to manipulate JavaScript object properties (NVD, Snyk).

The vulnerability allows attackers to add or modify properties of Object.prototype using a 'proto' payload. The issue stems from the package's parsing functionality, which doesn't properly sanitize input when processing .ini files. A proof of concept demonstrates that the library can be exploited by using a specially crafted input like 'proto\ntoString=JHU' to pollute the Object prototype (Snyk).

The exploitation of this vulnerability can lead to several consequences: Denial of Service (DoS) through manipulation of generic object functions, potential Remote Code Execution if the codebase evaluates and executes specific attributes, and Property Injection where attackers can pollute properties used for security decisions. The vulnerability received a CVSS score of 4.4 (medium) from Snyk and 9.8 (critical) from NVD (Snyk).

As there is no fixed version available for ini-parser, several mitigation strategies are recommended: freeze the prototype using Object.freeze(Object.prototype), implement JSON input schema validation, avoid unsafe recursive merge functions, use objects without prototypes (Object.create(null)), and consider using Map instead of Object (Snyk).