{"id":"CVE-2023-53159","aliases":["GHSA-xcf7-rvmh-g6q4","RUSTSEC-2023-0044"],"url":"https://o3.security/vulnerability/CVE-2023-53159","summary":"`openssl` `X509VerifyParamRef::set_host` buffer over-read","details":"When this function was passed an empty string, `openssl` would attempt to call `strlen` on it, reading arbitrary memory until it reached a NUL byte.","published":"2025-07-28T00:00:00Z","modified":"2026-09-19T03:45:27.607536432Z","cvss":{"score":4.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"openssl","fixedVersion":"0.10.55"}],"fix":{"url":"https://github.com/sfackler/rust-openssl/pull/1968","label":"sfackler/rust-openssl#1968"},"references":[{"type":"WEB","url":"https://crates.io/crates/openssl"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53159.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53159"},{"type":"ADVISORY","url":"https://rustsec.org/advisories/RUSTSEC-2023-0044.html"},{"type":"REPORT","url":"https://github.com/sfackler/rust-openssl/issues/1965"},{"type":"WEB","url":"https://github.com/sfackler/rust-openssl/pull/1968"},{"type":"PACKAGE","url":"https://github.com/sfackler/rust-openssl"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-19T03:45:27.607536432Z"}}