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      • High Risk Findings
        • Anyone Can Pass Any Proposal
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        • Bypass Signature Validity Check
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  • T.I.L.
    • 16 09 22
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  • Summary:
  • Mitigation:
  1. Smart Contracts Security
  2. Code 4 Rena
  3. Medium Risk Findings

Bypass Signature Validity Check

Submitted by (3) cryptphi, also found by 0x1f8b and defsec

PreviousMedium Risk FindingsNextCopy Of Lack Of Verification In Hashes

Last updated 1 year ago

Summary:

It is possible to pass Signature Validity check with an SignatureDecoder.recoverKey() returns 0 whenever the builder and /or contractor have an existing approved hash for a data.

Mitigation:

There should be a require check for _recoveredSignature != 0 in checkSignatureValidity().

https://code4rena.com/reports/2022-08-rigor/#m-03-signature-checks-could-be-passed-when-signaturedecoderrecoverkey-returns-0