Vulnerabilities

 2 via 2 paths

Dependencies

 67

Source

 GitHub

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Severity
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Status
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  • 0
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high severity
new

Improper Verification of Cryptographic Signature

  • Vulnerable module: node-forge
  • Introduced through: node-jose@2.2.0

Detailed paths

  • Introduced through: myinfo-connector-v4-nodejs@singpass/myinfo-connector-v4-nodejs › node-jose@2.2.0 › node-forge@1.4.0

Overview

node-forge is a JavaScript implementations of network transports, cryptography, ciphers, PKI, message digests, and various utilities.

Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in rsa.js, whose DigestInfo validation checks the outer element count (obj.value.length !== 2) but never verifies the element count of the inner DigestAlgorithm SEQUENCE, so the ASN.1 parser accepts extra children that are ignored during digest extraction. An attacker can forge a signature that verifies as valid for an arbitrary message, without the private key, by fixing the target digest at the block boundaries and filling roughly 314 garbage bytes inside the DigestAlgorithm structure to absorb the mathematical residue. This only affects verification against RSA keys with a low public exponent such as e=3, and although _parseAllDigestBytes defaults to true and rejects trailing garbage, it does not detect this interior padding.

Note: This is a bypass of the fix for the vulnerability described in CVE-2026-33894 and, as of this publication, has not been acknowledged by project maintainers.

Remediation

A fix was pushed into the master branch but not yet published.

References

Improper Verification of Cryptographic Signature vulnerability report

medium severity

Improper Validation of Specified Index, Position, or Offset in Input

  • Vulnerable module: uuid
  • Introduced through: node-jose@2.2.0

Detailed paths

  • Introduced through: myinfo-connector-v4-nodejs@singpass/myinfo-connector-v4-nodejs › node-jose@2.2.0 › uuid@9.0.1

Overview

uuid is a RFC4122 (v1, v4, and v5) compliant UUID library.

Affected versions of this package are vulnerable to Improper Validation of Specified Index, Position, or Offset in Input due to accepting external output buffers but not rejecting out-of-range writes (small buf or large offset). This inconsistency allows silent partial writes into caller-provided buffers.

PoC

cd /home/StrawHat/uuid
npm ci
npm run build

node --input-type=module -e "
import {v4,v5,v6} from './dist-node/index.js';
const ns='6ba7b810-9dad-11d1-80b4-00c04fd430c8';
for (const [name,fn] of [
  ['v4',()=>v4({},new Uint8Array(8),4)],
  ['v5',()=>v5('x',ns,new Uint8Array(8),4)],
  ['v6',()=>v6({},new Uint8Array(8),4)],
]) {
  try { fn(); console.log(name,'NO_THROW'); }
  catch(e){ console.log(name,'THREW',e.name); }
}"

Remediation

Upgrade uuid to version 11.1.1, 14.0.0 or higher.

References

Improper Validation of Specified Index, Position, or Offset in Input vulnerability report