{"id":"GHSA-m9m5-cg5h-r582","summary":"Improper random number generation in nanorand","details":"In versions of nanorand prior to 0.5.1, RandomGen implementations for standard unsigned integers could fail to properly generate numbers, due to using bit-shifting to truncate a 64-bit number, rather than just an as conversion. This often manifested as RNGs returning nothing but 0, including the cryptographically secure ChaCha random number generator.","aliases":["CVE-2020-35926","RUSTSEC-2020-0089"],"modified":"2023-11-08T04:03:39.769670Z","published":"2021-08-25T20:50:24Z","database_specific":{"cwe_ids":["CWE-338"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2021-08-19T18:55:41Z","nvd_published_at":null},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-35926"},{"type":"WEB","url":"https://github.com/Absolucy/nanorand-rs/commit/5ba218ac29df4786b002d7d12b47fa0c04a331f2"},{"type":"PACKAGE","url":"https://github.com/Absolucy/nanorand-rs"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2020-0089.html"},{"type":"WEB","url":"https://twitter.com/aspenluxxxy/status/1336684692284772352"}],"affected":[{"package":{"name":"nanorand","ecosystem":"crates.io","purl":"pkg:cargo/nanorand"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.5.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/08/GHSA-m9m5-cg5h-r582/GHSA-m9m5-cg5h-r582.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"}]}