CVE-2024-47535: netty DoS — Exploit & Fix

Description

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. An unsafe reading of environment file could potentially cause a denial of service in Netty. When loaded on an Windows application, Netty attempts to load a file that does not exist. If an attacker creates such a large file, the Netty application crashes. This vulnerability is fixed in 4.1.115.

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CVSS v3.1 Score

5.5

MEDIUM

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

Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption

Affected Products

Vendor	Product	Versions
netty	netty	< 4.1.115
microsoft	windows	All

References

Advisories & Patches

https://github.com/netty/netty/commit/fbf7a704a82e7449b48bd0bbb679f5661c6d61a3 https://github.com/netty/netty/security/advisories/GHSA-xq3w-v528-46rv

Exploits

https://github.com/netty/netty/security/advisories/GHSA-xq3w-v528-46rv

Frequently Asked Questions

What is CVE-2024-47535? +

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. An unsafe reading of environment file could potentially cause a denial of service in Netty. When loaded on an Windows application, Netty attempts to load a file that does not exist. If an attacker creates such a large file, the Netty application crashes. This vulnerability is fixed in 4.1.115. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-47535? +

CVE-2024-47535 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-47535? +

CVE-2024-47535 affects products from microsoft, netty, specifically: netty, windows. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-47535? +

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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