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    2 vulnerabilities found for risc0-ethereum by risc0

    CVE-2025-52884 (GCVE-0-2025-52884)

    Vulnerability from nvd – Published: 2025-06-24 20:20 – Updated: 2025-06-24 20:49
    VLAI
    Title
    risc0-ethereum-contracts allows invalid commitment with digest value of zero to be accepted by Steel.validateCommitment
    Summary
    RISC Zero is a zero-knowledge verifiable general computing platform, with Ethereum integration. The risc0-ethereum repository contains Solidity verifier contracts, Steel EVM view call library, and supporting code. Prior to versions 2.1.1 and 2.2.0, the `Steel.validateCommitment` Solidity library function will return `true` for a crafted commitment with a digest value of zero. This violates the semantics of `validateCommitment`, as this does not commitment to a block that is in the current chain. Because the digest is zero, it does not correspond to any block and there exist no known openings. As a result, this commitment will never be produced by a correct zkVM guest using Steel and leveraging this bug to compromise the soundness of a program using Steel would require a separate bug or misuse of the Steel library, which is expected to be used to validate the root of state opening proofs. A fix has been released as part of `risc0-ethereum` 2.1.1 and 2.2.0. Users for the `Steel` Solidity library versions 2.1.0 or earlier should ensure they are using `Steel.validateCommitment` in tandem with zkVM proof verification of a Steel program, as shown in the ERC-20 counter example, and documentation. This is the correct usage of Steel, and users following this pattern are not at risk, and do not need to take action. Users not verifying a zkVM proof of a Steel program should update their application to do so, as this is incorrect usage of Steel.
    Severity
    1.7 (Low)
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-159 - Improper Handling of Invalid Use of Special Elements
    Assigner
    References
    Impacted products
    Vendor Product Version
    risc0 risc0-ethereum Affected: < 2.1.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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        "title": "CISA ADP Vulnrichment"
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        }
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      "title": "risc0-ethereum-contracts allows invalid commitment with digest value of zero to be accepted by Steel.validateCommitment"
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    CVE-2025-52884 (GCVE-0-2025-52884)

    Vulnerability from cvelistv5 – Published: 2025-06-24 20:20 – Updated: 2025-06-24 20:49
    VLAI
    Title
    risc0-ethereum-contracts allows invalid commitment with digest value of zero to be accepted by Steel.validateCommitment
    Summary
    RISC Zero is a zero-knowledge verifiable general computing platform, with Ethereum integration. The risc0-ethereum repository contains Solidity verifier contracts, Steel EVM view call library, and supporting code. Prior to versions 2.1.1 and 2.2.0, the `Steel.validateCommitment` Solidity library function will return `true` for a crafted commitment with a digest value of zero. This violates the semantics of `validateCommitment`, as this does not commitment to a block that is in the current chain. Because the digest is zero, it does not correspond to any block and there exist no known openings. As a result, this commitment will never be produced by a correct zkVM guest using Steel and leveraging this bug to compromise the soundness of a program using Steel would require a separate bug or misuse of the Steel library, which is expected to be used to validate the root of state opening proofs. A fix has been released as part of `risc0-ethereum` 2.1.1 and 2.2.0. Users for the `Steel` Solidity library versions 2.1.0 or earlier should ensure they are using `Steel.validateCommitment` in tandem with zkVM proof verification of a Steel program, as shown in the ERC-20 counter example, and documentation. This is the correct usage of Steel, and users following this pattern are not at risk, and do not need to take action. Users not verifying a zkVM proof of a Steel program should update their application to do so, as this is incorrect usage of Steel.
    Severity
    1.7 (Low)
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-159 - Improper Handling of Invalid Use of Special Elements
    Assigner
    References
    Impacted products
    Vendor Product Version
    risc0 risc0-ethereum Affected: < 2.1.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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