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CVE-2022-35255

9.1 · CRITICAL

A weak randomness in WebCrypto keygen vulnerability exists in Node.js 18 due to a change with EntropySource() in SecretKeyGenTraits::DoKeyGen() in src/crypto/crypto_keygen.cc.

Published Dec 5, 2022CWE-338EPSS 2.09%

Overview

CVE-2022-35255 is a critical-severity vulnerability. It was published on December 5, 2022 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A weak randomness in WebCrypto keygen vulnerability exists in Node.js 18 due to a change with EntropySource() in SecretKeyGenTraits::DoKeyGen() in src/crypto/crypto_keygen.cc. There are two problems with this: 1) It does not check the return value, it assumes EntropySource() always succeeds, but it can (and sometimes will) fail. 2) The random data returned byEntropySource() may not be cryptographically strong and therefore not suitable as keying material.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refcert-portal.siemens.com/productcert/pdf/ssa-332410.pdfRefhackerone.com/reports/1690000Refsecurity.netapp.com/advisory/ntap-20230113-0002/Refwww.debian.org/security/2023/dsa-5326Refcert-portal.siemens.com/productcert/pdf/ssa-332410.pdfRefhackerone.com/reports/1690000Refsecurity.netapp.com/advisory/ntap-20230113-0002/Refwww.debian.org/security/2023/dsa-5326

How CyberStrike helps

Frequently asked questions

What is CVE-2022-35255?

CVE-2022-35255 is a critical-severity vulnerability. It was published on December 5, 2022 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2022-35255?

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-35255?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-35255?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-35255 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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