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ubuntucveUbuntu.comUB:CVE-2024-4067
HistoryMay 14, 2024 - 12:00 a.m.

CVE-2024-4067

2024-05-1400:00:00
ubuntu.com
ubuntu.com
2
npm
micromatch
regular expression denial of service
vulnerability
index.js
pattern matching
fix
testing
safe pattern
unix

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

6.8 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.7%

The NPM package micromatch 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.

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

6.8 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.7%