Key compromise via unchecked entropy-source failure
Published Dec 5, 2022 · Updated Apr 30, 2025
Weak WebCrypto key generation in affected Node.js releases allows attackers to compromise data protected by generated keys. SecretKeyGenTraits::DoKeyGen() uses EntropySource() output without checking whether entropy acquisition succeeded or ensuring that the returned bytes are cryptographically strong. The condition affects applications that generate and use secret keys through WebCrypto, exposing protected data and integrity when entropy acquisition fails.
Summary
What happened
Weak WebCrypto key generation in affected Node.js releases allows attackers to compromise data protected by generated keys. SecretKeyGenTraits::DoKeyGen() uses EntropySource() output without checking whether entropy acquisition succeeded or ensuring that the returned bytes are cryptographically strong. The condition affects applications that generate and use secret keys through WebCrypto, exposing protected data and integrity when entropy acquisition fails.
The record
- CVE
- CVE-2022-35255
- Published
- Dec 5, 2022
- Updated
- Apr 30, 2025
- Vendor
- Node.js
- Product
- Node.js
- Classifications
- CWE-338
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 5, 2022CVE publishedPublication date reported by the CVE source.
- Apr 30, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0 <10.*
- Affected versionversion=11.0 <11.*
- Affected versionversion=12.0 <12.*
- Affected versionversion=13.0 <13.*
- Affected versionversion=15.0 <15.*
- Affected versionversion=17.0 <17.*
- Affected versionversion=18.0 <18.9.1
- Affected versionversion=4.0 <4.*
- Affected versionversion=5.0 <5.*
- Affected versionversion=6.0 <6.*
- Affected versionversion=7.0 <7.*
- Affected versionversion=8.0 <8.*
- Affected versionversion=9.0 <9.*
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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