CVE-2024-4067
MEDIUMmicromatch < 4.0.8 - Regular Expression Denial of Service via Greedy Pattern Matching
Title source: llmDescription
The NPM package `micromatch` prior to 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 persists. This issue should be mitigated by using a safe pattern that won't start backtracking the regular expression due to greedy matching. This issue was fixed in version 4.0.8.
References (8)
Core 8
Core References
Exploit, Third Party Advisory
https://advisory.checkmarx.net/advisory/CVE-2024-4067/
Third Party Advisory
https://devhub.checkmarx.com/cve-details/CVE-2024-4067/
Issue Tracking, Patch
https://github.com/micromatch/micromatch/pull/266
Product
https://github.com/micromatch/micromatch/blob/2c56a8604b68c1099e7bc0f807ce0865a339747a/index.js#L448
Issue Tracking
https://github.com/micromatch/micromatch/issues/243
Issue Tracking, Patch
https://github.com/micromatch/micromatch/pull/247
Scores
CVSS v3
5.3
EPSS
0.0143
EPSS Percentile
69.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-1333
Status
published
Products (2)
jonschlinkert/micromatch
< 4.0.8
npm/micromatch
0 - 4.0.8npm
Published
May 14, 2024
Tracked Since
Feb 18, 2026