GHSA-mpg4-rc92-vx8v — high GitHub Advisory (CVE-2024-41818) in npm/fast-xml-parser

Description

Summary

A ReDOS that exists on currency.js was discovered by Gauss Security Labs R&D team.

Details

https://github.com/NaturalIntelligence/fast-xml-parser/blob/v4.4.0/src/v5/valueParsers/currency.js#L10 contains a vulnerable regex

PoC

pass the following string '\t'.repeat(13337) + '.'

Impact

Denial of service during currency parsing in experimental version 5 of fast-xml-parser-library

https://gauss-security.com

Basic information

Type: reviewed
Severity: high
Advisory on GitHub: Open advisory ↗
Repository advisory: Open repository advisory ↗
Source code: Browse source ↗
Published (advisory): 2024-07-29 17:46:16 UTC
Updated: 2024-10-11 14:14:07 UTC
GitHub reviewed: 2024-07-29 17:46:16 UTC
NVD published: 2024-07-29

Score	Percentile
0.69%	71.51%

CVSS Scores

Base score	Version	Severity	Vector
7.5	3.1	—	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.
8.7	4.0	—	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network. Attack complexity (AC:L) Exploitation conditions are straightforward and stable. Attack requirements (AT:N) No additional preconditions are required beyond normal reachability. Privileges required (PR:N) No privileges are required. User interaction (UI:N) No user interaction is required. Vulnerable system confidentiality impact (VC:N) No confidentiality impact on the vulnerable system. Vulnerable system integrity impact (VI:N) No integrity impact on the vulnerable system. Vulnerable system availability impact (VA:H) High availability impact on the vulnerable system. Subsequent system confidentiality impact (SC:N) No confidentiality impact on subsequent systems. Subsequent system integrity impact (SI:N) No integrity impact on subsequent systems. Subsequent system availability impact (SA:N) No availability impact on subsequent systems.

Identifiers

Type	Value
GHSA	GHSA-mpg4-rc92-vx8v ↗
CVE	CVE-2024-41818 ↗

CWEs

CWE id	Name
CWE-400	Uncontrolled Resource Consumption
CWE-1333	Inefficient Regular Expression Complexity

Credits

Gauss-Security (finder)
amitguptagwl (remediation_developer)
iamvolvo (analyst)
aaron-belenky (analyst)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem	Package	Vulnerable range	First patched	Vulnerable functions
npm	fast-xml-parser	>= 4.3.5, < 4.4.1	4.4.1	—

fast-xml-parser vulnerable to ReDOS at currency parsing