CVE-2022-35255

NameCVE-2022-35255
DescriptionA 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
ReferencesDSA-5326-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
nodejs (PTS)buster10.24.0~dfsg-1~deb10u1fixed
buster (security)10.24.0~dfsg-1~deb10u2fixed
bullseye12.22.5~dfsg-2~11u1vulnerable
bullseye (security)12.22.12~dfsg-1~deb11u3fixed
bookworm, sid18.13.0+dfsg1-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
nodejssourcebuster(not affected)
nodejssourcebullseye12.22.12~dfsg-1~deb11u3DSA-5326-1
nodejssource(unstable)18.10.0+dfsg-1

Notes

[buster] - nodejs <not-affected> (Vulnerable code introduced later)
https://nodejs.org/en/blog/vulnerability/september-2022-security-releases/#weak-randomness-in-webcrypto-keygen-high-cve-2022-35255
https://github.com/nodejs/node/commit/0c2a5723beff39d1f62daec96b5389da3d427e79 (v18.9.1)
Introduced by https://github.com/nodejs/node/commit/dae283d96fd31ad0f30840a7e55ac97294f505ac (v15.0.0)

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