CVE-2024-21892: node.js Code Injection (CVSS 7.8)

Description

On Linux, Node.js ignores certain environment variables if those may have been set by an unprivileged user while the process is running with elevated privileges with the only exception of CAP_NET_BIND_SERVICE. Due to a bug in the implementation of this exception, Node.js incorrectly applies this exception even when certain other capabilities have been set. This allows unprivileged users to inject code that inherits the process's elevated privileges.

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CVSS v3.1 Score

7.8

HIGH

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

Weakness Type (CWE)

CWE-94 CWE-94

CWE-269 CWE-269

Affected Products

Vendor	Product	Versions
nodejs	node.js	18.0.0 — 18.19.1
nodejs	node.js	20.0.0 — 20.11.1
nodejs	node.js	21.0.0 — 21.6.2
linux	linux_kernel	All

References

Other References

http://www.openwall.com/lists/oss-security/2024/03/11/1 https://hackerone.com/reports/2237545 https://security.netapp.com/advisory/ntap-20240322-0003/ http://www.openwall.com/lists/oss-security/2024/03/11/1 https://hackerone.com/reports/2237545 https://security.netapp.com/advisory/ntap-20240322-0003/

Frequently Asked Questions

What is CVE-2024-21892? +

On Linux, Node.js ignores certain environment variables if those may have been set by an unprivileged user while the process is running with elevated privileges with the only exception of CAP_NET_BIND_SERVICE. Due to a bug in the implementation of this exception, Node.js incorrectly applies this exception even when certain other capabilities have been set. This allows unprivileged users to inject code that inherits the process's elevated privileges. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-21892? +

CVE-2024-21892 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-21892? +

CVE-2024-21892 affects products from linux, nodejs, specifically: linux_kernel, node.js. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-21892? +

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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