Expect version 22.3.0 introduces subtle improvements over its predecessor, version 22.2.2, offering developers a slightly refined testing experience. While the core dependencies like jest-diff, ansi-styles, jest-get-type, jest-regex-util, jest-message-util, and jest-matcher-utils remain consistent, the update signifies ongoing maintenance and refinement within the Jest ecosystem. Both versions share the same underlying structure with a file count of 12 and an unpacked size of 534361 bytes, and are licensed under MIT, making them free to use in a wide variety of projects. The consistent dependencies indicate a focus on stability and compatibility within the Jest framework, ensuring developers can upgrade without major disruptions related to testing utilities. The most notable difference is the release date with version 22.3.0 being released approximately 4 days after version 22.2.2 representing a quick follow-up, possibly addressing minor bug fixes or performance enhancements. For developers leveraging Expect, this incremental update promotes confidence in the library's continuing development cycle within the Jest framework with its robust and reliable assertion capabilities for unit and integration testing. Developers should consider upgrading primarily to stay current with the latest improvements of tools in the Jest ecosystem.
All the vulnerabilities related to the version 22.3.0 of the package
Regular Expression Denial of Service (ReDoS) in micromatch
The NPM package micromatch prior to version 4.0.8 is vulnerable to Regular Expression Denial of Service (ReDoS). The vulnerability occurs in micromatch.braces() in index.js because the pattern .* will greedily match anything. By passing a malicious payload, the pattern matching will keep backtracking to the input while it doesn't find the closing bracket. As the input size increases, the consumption time will also increase until it causes the application to hang or slow down. There was a merged fix but further testing shows the issue persisted prior to https://github.com/micromatch/micromatch/pull/266. This issue should be mitigated by using a safe pattern that won't start backtracking the regular expression due to greedy matching.
Regular Expression Denial of Service (ReDoS) in braces
A vulnerability was found in Braces versions prior to 2.3.1. Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) attacks.
Regular Expression Denial of Service in braces
Versions of braces prior to 2.3.1 are vulnerable to Regular Expression Denial of Service (ReDoS). Untrusted input may cause catastrophic backtracking while matching regular expressions. This can cause the application to be unresponsive leading to Denial of Service.
Upgrade to version 2.3.1 or higher.
Uncontrolled resource consumption in braces
The NPM package braces fails to limit the number of characters it can handle, which could lead to Memory Exhaustion. In lib/parse.js, if a malicious user sends "imbalanced braces" as input, the parsing will enter a loop, which will cause the program to start allocating heap memory without freeing it at any moment of the loop. Eventually, the JavaScript heap limit is reached, and the program will crash.
