Expect version 22.2.2 is a minor patch release following version 22.2.0, both part of the Jest testing framework's ecosystem. Primarily, these versions offer assertion utilities central to writing robust unit and integration tests. Developers leveraging Expect can perform a wide range of checks on their code, ensuring expected output, error handling, and state management.
The core dependencies remain consistent between versions. Both rely on jest-diff for clear and informative diff output when assertions fail, ansi-styles for visually appealing console messages, jest-get-type for accurate type detection, jest-regex-util for regex-related utilities, jest-message-util for creating standardized error messages, and jest-matcher-utils for helper functions used within matchers. This shared foundation offers stability and reliability across the releases.
The key difference lies in the specifics of each version, with 22.2.2 likely addressing bug fixes and minor improvements identified after the 22.2.0 release. The more recent version also has a negligibly larger unpacked size, indicating potential minor additions or code adjustments. Developers should consider upgrading to 22.2.2 for the latest enhancements and bug fixes, ensuring a smoother testing experience. The update from expects 2018-02-07 to 2018-02-09. Both versions are under the MIT license promoting free use and distribution.
All the vulnerabilities related to the version 22.2.2 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.
