gnark's Groth16 commitment extension unsound for more than one commitment
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| Consensys | gnark | affected |
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No data.
No data available yet.
| Source | ID | Title |
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EUVD |
EUVD-2024-2851 | gnark is a fast zk-SNARK library that offers a high-level API to design circuits. Versions prior to 0.11.0 have a soundness issue - in case of multiple commitments used inside the circuit the prover is able to choose all but the last commitment. As gnark uses the commitments for optimized non-native multiplication, lookup checks etc. as random challenges, then it could impact the soundness of the whole circuit. However, using multiple commitments has been discouraged due to the additional cost to the verifier and it has not been supported in the recursive in-circuit Groth16 verifier and Solidity verifier. gnark's maintainers expect the impact of the issue be very small - only for the users who have implemented the native Groth16 verifier or are using it with multiple commitments. We do not have information of such users. The issue has been patched in version 0.11.0. As a workaround, users should follow gnark maintainers' recommendation to use only a single commitment and then derive in-circuit commitments as needed using the `std/multicommit` package. |
Github GHSA |
GHSA-q3hw-3gm4-w5cr | gnark's Groth16 commitment extension unsound for more than one commitment |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.190% probability within 30 days)
| Type | Values Removed | Values Added |
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| First Time appeared |
Consensys gnark-crypto
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| Weaknesses | NVD-CWE-noinfo | |
| CPEs | cpe:2.3:a:consensys:gnark-crypto:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Consensys gnark-crypto
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| Type | Values Removed | Values Added |
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| First Time appeared |
Consensys
Consensys gnark |
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| CPEs | cpe:2.3:a:consensys:gnark:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Consensys
Consensys gnark |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| Description | gnark is a fast zk-SNARK library that offers a high-level API to design circuits. Versions prior to 0.11.0 have a soundness issue - in case of multiple commitments used inside the circuit the prover is able to choose all but the last commitment. As gnark uses the commitments for optimized non-native multiplication, lookup checks etc. as random challenges, then it could impact the soundness of the whole circuit. However, using multiple commitments has been discouraged due to the additional cost to the verifier and it has not been supported in the recursive in-circuit Groth16 verifier and Solidity verifier. gnark's maintainers expect the impact of the issue be very small - only for the users who have implemented the native Groth16 verifier or are using it with multiple commitments. We do not have information of such users. The issue has been patched in version 0.11.0. As a workaround, users should follow gnark maintainers' recommendation to use only a single commitment and then derive in-circuit commitments as needed using the `std/multicommit` package. | |
| Title | gnark's Groth16 commitment extension unsound for more than one commitment | |
| Weaknesses | CWE-200 | |
| References |
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| Metrics |
cvssV3_1
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