critical9.8
CVE-2021-38194
Calculation error in ark-r1cs-std
Impact
An issue was discovered in the ark-r1cs-std crate before 0.3.1 for Rust. It does not enforce any constraints in the FieldVar::mul_by_inverse method. Thus, a prover can produce a proof that is unsound but is nonetheless verified.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| rust | ark-r1cs-std | >= 0.2.0, < 0.3.1 | 0.3.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Arcworks | Ark-R1cs-Std | before 0.3.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/ark-r1cs-std/RUSTSEC-2021-0075.md
- https://rustsec.org/advisories/RUSTSEC-2021-0075.html
- https://github.com/advisories/GHSA-qj3v-q2vj-4c8h
- https://nvd.nist.gov/vuln/detail/CVE-2021-38194
- https://github.com/arkworks-rs/r1cs-std/pull/70
- https://github.com/arkworks-rs/r1cs-std/commit/47ddbaa411afe7c499311a248a38135e5a192b67