Inefficient Regular Expression Complexity Affecting micromatch package, versions <4.0.6


Severity

0.0
high
0
10

    Threat Intelligence

    EPSS
    0.05% (16th percentile)

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  • Snyk ID SNYK-JS-MICROMATCH-6838728
  • published 13 May 2024
  • disclosed 13 May 2024
  • credit Mário Teixeira

How to fix?

Upgrade micromatch to version 4.0.6 or higher.

Overview

Affected versions of this package are vulnerable to Inefficient Regular Expression Complexity due to the use of unsafe pattern configurations that allow greedy matching through the micromatch.braces() function. An attacker can cause the application to hang or slow down by passing a malicious payload that triggers extensive backtracking in regular expression processing.

CVSS Scores

version 3.1
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Snyk

7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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Red Hat

7.5 high