{"id":"UBUNTU-CVE-2022-50237","details":"The ed25519-dalek crate before 2 for Rust allows a double public key signing function oracle attack. The Keypair implementation leads to a simple computation for extracting a private key.","modified":"2026-05-20T16:11:48.655325120Z","published":"2025-07-28T02:15:00Z","upstream":["CVE-2022-50237"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-50237"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2022-50237"},{"type":"REPORT","url":"https://crates.io/crates/ed25519-dalek"},{"type":"REPORT","url":"https://github.com/MystenLabs/ed25519-unsafe-libs"},{"type":"REPORT","url":"https://rustsec.org/advisories/RUSTSEC-2022-0093.html"}],"affected":[{"package":{"name":"rust-curve25519-dalek","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/rust-curve25519-dalek?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.3+20240618+dfsg-9"],"ecosystem_specific":{"binaries":[{"binary_name":"librust-curve25519-dalek-derive-dev","binary_version":"0.1.1+4.1.3+20240618+dfsg-9"},{"binary_name":"librust-curve25519-dalek-dev","binary_version":"4.1.3+4.1.3+20240618+dfsg-9"},{"binary_version":"2.1.1+4.1.3+20240618+dfsg-9","binary_name":"librust-ed25519-dalek-dev"},{"binary_version":"2.0.1+4.1.3+20240618+dfsg-9","binary_name":"librust-x25519-dalek-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-50237.json"}},{"package":{"name":"rust-curve25519-dalek","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/rust-curve25519-dalek?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.3+20240618+dfsg-9","4.2.0+dfsg-1","4.2.0+dfsg-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"librust-curve25519-dalek-derive-dev","binary_version":"0.1.1+4.2.0+dfsg-1build1"},{"binary_version":"4.2.0+4.2.0+dfsg-1build1","binary_name":"librust-curve25519-dalek-dev"},{"binary_name":"librust-ed25519-dalek-dev","binary_version":"2.2.0+4.2.0+dfsg-1build1"},{"binary_version":"2.0.1+4.2.0+dfsg-1build1","binary_name":"librust-x25519-dalek-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-50237.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}