{"answers":{"affected":"3 open source packages ship an affected version, including ark-r1cs-std. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-38194 in the wild and no public exploit code.","fix":"Upgrade ark-r1cs-std to 0.3.1 or later.","what":"CVE-2021-38194 is a critical vulnerability in n/a, published on 8 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-38194 and fix it if it is affected.\n\nWhat it is: CVE-2021-38194 is a critical vulnerability in n/a, published on 8 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-38194 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- ark-r1cs-std (crates.io): affected from 0.0.0-0; fixed in 0.3.1\n- ark-r1cs-std (crates.io): affected from 0.2.0; fixed in 0.3.1\n- ark-r1cs-std (crates.io): affected from 0.2.0; fixed in 0.3.1\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2021-38194/ (Markdown: https://insights.sbomify.com/CVE-2021-38194/index.md)","id":"CVE-2021-38194","markdown":"https://insights.sbomify.com/CVE-2021-38194/index.md","name":"CVE-2021-38194","record":{"aliases":["GHSA-qj3v-q2vj-4c8h","RUSTSEC-2021-0075"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Rust cryptographic library","requires_auth":"none","summary":"A flaw in the ark-r1cs-std Rust library allows attackers to generate unsound proofs that are incorrectly verified, bypassing cryptographic integrity checks.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ark-r1cs-std","vendor":"arcworks"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"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.","ecosystems":["crates.io"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Calculation error in ark-r1cs-std","id":"CVE-2021-38194","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"other","year":"2021"},"n_packages":3,"n_references":2,"next":{"headline":"Overflow in libsecp256k1","id":"CVE-2021-38195"},"packages":[{"ecosystem":"crates.io","fixed":["0.3.1"],"introduced":["0.0.0-0"],"last_affected":[],"package":"ark-r1cs-std","purl":"pkg:cargo/ark-r1cs-std","source":"RUSTSEC-2021-0075"},{"ecosystem":"crates.io","fixed":["0.3.1"],"introduced":["0.2.0"],"last_affected":[],"package":"ark-r1cs-std","purl":null,"source":"GHSA-qj3v-q2vj-4c8h"},{"ecosystem":"crates.io","fixed":["0.3.1"],"introduced":["0.2.0"],"last_affected":[],"package":"ark-r1cs-std","purl":"pkg:cargo/ark-r1cs-std","source":"GHSA-qj3v-q2vj-4c8h"}],"prev":{"headline":"Cross-site Scripting in ammonia","id":"CVE-2021-38193"},"products":["n/a"],"published":"2021-08-08","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"open","licence":"CC0 1.0","name":"RustSec","prefix":"RUSTSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"A flaw in the ark-r1cs-std Rust library allows attackers to generate unsound proofs that are incorrectly verified, bypassing cryptographic integrity checks.","url":"https://insights.sbomify.com/CVE-2021-38194/"}