Qs is a popular npm package designed for parsing and stringifying URL query strings, crucial for handling complex data structures in web applications. Both version 6.1.0 and the preceding 6.0.4 share the same core functionality: parsing nested objects and arrays within query strings, addressing a common need for developers dealing with APIs and form data. This capability significantly simplifies data handling compared to basic querystring methods.
Examining the provided data reveals both interesting similarities and critical differences between the two versions. The listed dependencies and development dependencies are identical, implying a consistent development and testing environment across these releases. Tools like tape provides unit testing while eslint maintained code quality through linting.
Notably, version 6.1.0 was released on February 4, 2016, while version 6.0.4 was released later on March 6, 2017. This chronological discrepancy suggests a possible issue or regression in later 6.0.x releases leading to a rollback, or a release date error within the registry data. Potential users should thoroughly investigate the release notes and changelogs associated with these specific versions to understand the precise changes and potential fixes implemented in version 6.1.0 relative to the 6.0.x series. Careful consideration of community reports and bug trackers can shed light on the actual version's stability and suitability for different project requirements. Because of a later releaseDate it might seem that 6.0.4 is more polished but in reality the previous realease 6.1.0 might contain crucial bug fixes.
All the vulnerabilities related to the version 6.1.0 of the package
Prototype Pollution Protection Bypass in qs
Affected version of qs are vulnerable to Prototype Pollution because it is possible to bypass the protection. The qs.parse function fails to properly prevent an object's prototype to be altered when parsing arbitrary input. Input containing [ or ] may bypass the prototype pollution protection and alter the Object prototype. This allows attackers to override properties that will exist in all objects, which may lead to Denial of Service or Remote Code Execution in specific circumstances.
Upgrade to 6.0.4, 6.1.2, 6.2.3, 6.3.2 or later.
qs vulnerable to Prototype Pollution
qs before 6.10.3 allows attackers to cause a Node process hang because an __ proto__ key can be used. In many typical web framework use cases, an unauthenticated remote attacker can place the attack payload in the query string of the URL that is used to visit the application, such as a[__proto__]=b&a[__proto__]&a[length]=100000000. The fix was backported to qs 6.9.7, 6.8.3, 6.7.3, 6.6.1, 6.5.3, 6.4.1, 6.3.3, and 6.2.4.
