Home/CVE/A weak randomness in WebCrypto keygen vulnerability exists in Node.js 18 due to a change with EntropySource() in SecretK
CVE

CVE-2022-35255

A weak randomness in WebCrypto keygen vulnerability exists in Node.js 18 due to a change with EntropySource() in SecretK

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.

CRITICAL · CVSS 9.1 EPSS 0.01213
Act now
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-338Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
CWE-338Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
▤

Affected Products & Versions

7
nodejs node.js>= 15.0.0 and <= 15.14.0
nodejs node.js>= 16.0.0 and <= 16.12.0
nodejs node.js>= 16.13.0 and < 16.17.1
nodejs node.js>= 18.0.0 and < 18.9.1
siemens sinec ins< 1.0
siemens sinec insall versions
debian linuxall versions
⚠

Public Exploits & PoCs

1
pochackerone.com · 1690000hackerone.com
▣

Scoring & Timeline

9.1
CRITICAL · CVSS v3.1 · support@hackerone.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD05 Dec 2022 · 10:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

13
suse-csafopenSUSE-SU-2024:12370-1
suse-csafopenSUSE-SU-2024:12376-1
suse-csafSUSE-SU-2023:0419-1
suse-csafSUSE-SU-2023:0408-1
siemens-csafSSA-332410
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://cert-portal.siemens.com/productcert/pdf/ssa-332410.pdfThird Party Advisory
https://security.netapp.com/advisory/ntap-20230113-0002/Third Party Advisory
https://www.debian.org/security/2023/dsa-5326Third Party Advisory
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