Vulnerability identifier: #VU86724

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-46809

CWE-ID: CWE-385

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Node.js
Server applications / Web servers

Vendor: Node.js Foundation

Description

The vulnerability allows a remote attacker to perform Marvin attack.

The vulnerability exists due to a covert timing channel in the privateDecrypt() API of the crypto library. A remote attacker can perform a covert timing side-channel during PKCS#1 v1.5 padding error handling and decrypt captured RSA ciphertexts or forge signatures, especially in scenarios involving API endpoints processing Json Web Encryption messages.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Node.js: 21.6.0 - 21.6.1, 20.11.0, 21.5.0, 21.4.0, 18.19.0, 18.1.0 - 18.18.2, 18.4.0, 18.3.0, 18.2.0, 18.0.0

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External links
http://nodejs.org/en/blog/vulnerability/february-2024-security-releases

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.