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Vulnerability Regular Expression Denial of Service (ReDoS) found in package micromatch v4.0.7
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 micromatch/micromatch#266. This issue should be mitigated by using a safe pattern that won't start backtracking the regular expression due to greedy matching.
Steps to reproduce
npm audit --audit-level=low
Solution suggestion
Update micromatch dependency to version 4.0.8
The text was updated successfully, but these errors were encountered:
Issue
Vulnerability Regular Expression Denial of Service (ReDoS) found in package micromatch v4.0.7
The NPM package
micromatch
prior to version 4.0.8 is vulnerable to Regular Expression Denial of Service (ReDoS). The vulnerability occurs inmicromatch.braces()
inindex.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 micromatch/micromatch#266. This issue should be mitigated by using a safe pattern that won't start backtracking the regular expression due to greedy matching.Steps to reproduce
npm audit --audit-level=low
Solution suggestion
Update
micromatch
dependency to version 4.0.8The text was updated successfully, but these errors were encountered: