micromatch up to 4.05 index.js micromatch.braces redos

Summaryinfo

A vulnerability marked as critical has been reported in micromatch up to 4.05. This affects the function micromatch.braces of the file index.js. This manipulation causes redos. This vulnerability appears as CVE-2024-4067. The attack may be initiated remotely. There is no available exploit. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as critical was found in micromatch up to 4.05. Affected by this vulnerability is the function micromatch.braces of the file index.js. The manipulation with an unknown input leads to a redos vulnerability. The CWE definition for the vulnerability is CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. As an impact it is known to affect availability. The summary by CVE is:

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.

The weakness was presented by Mário Teixeira and Checkmarx Research Group as 243. The advisory is shared at github.com. This vulnerability is known as CVE-2024-4067 since 04/23/2024. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1449.003 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 209968 (SUSE SLED15 / SLES15 / openSUSE 15 Security Update : pgadmin4 (SUSE-SU-2024:3771-1)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (209968). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• micromatch

Version

• 4.05

Website

• Product: https://github.com/micromatch/micromatch/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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