{"id":"GHSA-rm66-9gh4-4gp8","aliases":["RUSTSEC-2024-0393"],"status":"published","title":"cggmp21 vulnerable to ambiguous challenge derivation","description":"Challenge derivation in non-interactive ZK proofs was ambiguous and that could lead to security vulnerability (however, it's unknown if it could be exploited).","severity":{"version":"4.0","score":2.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U","level":"low","from":"ghsa"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-327"],"published":"2024-07-18T12:00:00Z","modified":"2025-10-28T06:29:26Z","fixes":[{"ecosystem":"crates.io","package":"cggmp21","fixed_in":["0.4.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"crates.io","package":"cggmp21","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.0"}]}]},{"source":"osv","ecosystem":"crates.io","package":"cggmp21","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.4.0"}]}]},{"source":"osv","ecosystem":"crates.io","package":"cggmp21","ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"},{"fixed":"0.4.0"}]}]}],"references":[{"url":"https://github.com/dfns/cggmp21/pull/103","tags":["web"]},{"url":"https://rustsec.org/advisories/RUSTSEC-2024-0393.html","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-rm66-9gh4-4gp8"},{"url":"https://github.com/LFDT-Lockness/cggmp21","tags":["package"]},{"url":"https://crates.io/crates/cggmp21","tags":["package"]}],"sources":{"ghsa":[{"id":"GHSA-rm66-9gh4-4gp8","title":"cggmp21 vulnerable to ambiguous challenge derivation","description":"Challenge derivation in non-interactive ZK proofs was ambiguous and that could lead to security vulnerability (however, it's unknown if it could be exploited).\n","status":"published","published":"2024-11-12T20:54:58Z","modified":"2024-11-12T20:54:59Z","cvss":[{"version":"4.0","score":2.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U","level":"low"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T14:38:17.357217Z"}],"osv":[{"id":"GHSA-rm66-9gh4-4gp8","title":"cggmp21 vulnerable to ambiguous challenge derivation","description":"Challenge derivation in non-interactive ZK proofs was ambiguous and that could lead to security vulnerability (however, it's unknown if it could be exploited).\n","status":"published","published":"2024-11-12T20:54:58Z","modified":"2025-10-28T06:29:26.069465Z","cvss":[{"version":"4.0","score":2.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U","level":"low"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T15:46:55.877614Z"},{"id":"RUSTSEC-2024-0393","title":"Ambiguous challenge derivation","description":"Challenge derivation in non-interactive ZK proofs was ambiguous and that could lead\nto security vulnerability (however, it's unknown if it could be exploited).","status":"published","published":"2024-07-18T12:00:00Z","modified":"2025-10-28T06:29:26.069465Z","updated_at":"2026-11-02T15:53:39.971022Z"}]}}