CVE-2024-27088: es5-ext DoS — Exploit & Fix

Description

es5-ext contains ECMAScript 5 extensions. Passing functions with very long names or complex default argument names into `function#copy` or `function#toStringTokens` may cause the script to stall. The vulnerability is patched in v0.10.63.

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Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption

CWE-1333 CWE-1333

Affected Products

Vendor	Product	Versions
medikoo	es5-ext	0.10.0 — 0.10.63

References

Advisories & Patches

https://github.com/medikoo/es5-ext/commit/3551cdd7b2db08b1632841f819d008757d28e8e2 https://github.com/medikoo/es5-ext/commit/a52e95736690ad1d465ebcd9791d54570e294602 https://github.com/medikoo/es5-ext/security/advisories/GHSA-4gmj-3p3h-gm8h https://github.com/medikoo/es5-ext/commit/3551cdd7b2db08b1632841f819d008757d28e8e2 https://github.com/medikoo/es5-ext/commit/a52e95736690ad1d465ebcd9791d54570e294602 https://github.com/medikoo/es5-ext/security/advisories/GHSA-4gmj-3p3h-gm8h

Exploits

https://github.com/medikoo/es5-ext/issues/201 https://github.com/medikoo/es5-ext/issues/201

Frequently Asked Questions

What is CVE-2024-27088? +

es5-ext contains ECMAScript 5 extensions. Passing functions with very long names or complex default argument names into `function#copy` or `function#toStringTokens` may cause the script to stall. The vulnerability is patched in v0.10.63.

What products are affected by CVE-2024-27088? +

CVE-2024-27088 affects products from medikoo, specifically: es5-ext. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-27088? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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