CVE-2025-52884

June 24, 2025, 9:15 p.m.

1.7
Low

Description

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.

Product(s) Impacted

Vendor Product Versions
Risc0
  • Risc0
  • 2.1.0, *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-159
Improper Handling of Invalid Use of Special Elements
The product does not properly filter, remove, quote, or otherwise manage the invalid use of special elements in user-controlled input, which could cause adverse effect on its behavior and integrity.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a risc0 risc0 2.1.0 / / / / / / /
a risc0 risc0 / / / / / / /

References

https://docs.beboundless.xyz/developers/steel/how-it-works#verifying-the-proof-onchain
https://github.com/risc0/risc0-ethereum/blob/ff0cb9253a87945b653b825711b8b5075f8b7545/examples/erc20-counter/contracts/src/Counter.sol#L56-L63
https://github.com/risc0/risc0-ethereum/commit/3bbac859c7132b21ba5fdf2d47f1dd52e7e73d98
https://github.com/risc0/risc0-ethereum/pull/605
https://github.com/risc0/risc0-ethereum/releases/tag/v2.1.1
https://github.com/risc0/risc0-ethereum/releases/tag/v2.2.0
https://github.com/risc0/risc0-ethereum/security/advisories/GHSA-gjv3-89hh-9xq2

Tags

security-advisories@github.com
2025-06-24
CVE-2025-52884
CWE-159

CVSS Score

1.7 / 10

CVSS Data - 4.0

  • Attack Vector: NETWORK
  • Attack Complexity: HIGH
  • Attack Requirements: PRESENT
  • Privileges Required: NONE
  • User Interaction: NONE
  • Scope:
  • Confidentiality Impact: NONE
  • Integrity Impact: LOW
  • Availability Impact: NONE
  • Exploit Maturity: UNREPORTED

    • 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

    View Vector String

Timeline

Published: June 24, 2025, 9:15 p.m.
Last Modified: June 24, 2025, 9:15 p.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

security-advisories@github.com

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.