yargs-parser प्रोटोटाइप प्रदूषण (Prototype Pollution) के प्रति संवेदनशील

Prototype pollution occurs when an attacker can manipulate the prototype of JavaScript objects, effectively adding or modifying properties that will be inherited by all objects created thereafter. In the context of yargs-parser, this vulnerability arises from insufficient sanitization of arguments passed to the parser. An attacker who can control the arguments passed to yargs-parser can exploit this to inject malicious properties into the Object.prototype, potentially affecting the behavior of the application. While direct remote code execution is unlikely, the modified prototype can lead to denial-of-service conditions, unexpected application behavior, or even privilege escalation depending on how the parsed arguments are used within the application. This vulnerability shares similarities with other prototype pollution attacks, where subtle modifications can have widespread consequences.

1. आरक्षित2020-01-21
2. प्रकाशित2020-09-04
3. संशोधित2026-03-13
4. EPSS अद्यतन2026-04-02

The primary mitigation for CVE-2020-7608 is to upgrade to a patched version of yargs-parser. Versions 13.1.2, 15.0.1, and 18.1.1 or later address the vulnerability. If upgrading is not immediately feasible, consider implementing input validation and sanitization on the arguments passed to yargs-parser to prevent malicious input from reaching the parser. While a direct WAF rule is unlikely, stricter input validation at the application level can help. Carefully review any code that uses the parsed arguments to ensure it handles unexpected properties gracefully. After upgrading, confirm the fix by attempting to pass a malicious argument like --foo.proto.bar baz to yargs-parser and verifying that the bar property is not added to Object.prototype.

अंतिम अपडेट

22.0.012 महीने पहले