Vulnerability library
Security checkJanuary 27, 2023

RSA-PSS signature validation vulnerability by prepending zeros in jsrsasign

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High severitynpmjsrsasign

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Description

Jsrsasign can verify RSA-PSS signature which value can expressed as BigInteger. When there is a valid RSA-PSS signature value, this vulnerability is also accept value with prepending zeros as a valid signature.

  • If you are not use RSA-PSS signature validation, this vulnerability is not affected.

Recommendation

Update the jsrsasign package to the latest compatible version. Followings are version details:

  • Affected version(s): >= 3.0.0, < 8.0.16
  • Patched version(s): 8.0.17

References

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