{"id":"CVE-2023-0217","aliases":["GHSA-vxrh-cpg7-8vjr","RUSTSEC-2023-0012"],"url":"https://o3.security/vulnerability/CVE-2023-0217","summary":"NULL dereference validating DSA public key","details":"An invalid pointer dereference on read can be triggered when an\napplication tries to check a malformed DSA public key by the\nEVP_PKEY_public_check() function. This will most likely lead\nto an application crash. This function can be called on public\nkeys supplied from untrusted sources which could allow an attacker\nto cause a denial of service attack.\n\nThe TLS implementation in OpenSSL does not call this function\nbut applications might call the function if there are additional\nsecurity requirements imposed by standards such as FIPS 140-3.","published":"2023-02-08T19:02:48.524Z","modified":"2026-08-12T03:51:41.900429126Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.01846,"percentile":0.77781,"asOf":"2026-09-09"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"openssl-src","fixedVersion":"300.0.12"}],"fix":null,"references":[{"type":"WEB","url":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/0xxx/CVE-2023-0217.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-0217"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202402-08"},{"type":"ADVISORY","url":"https://www.openssl.org/news/secadv/20230207.txt"},{"type":"FIX","url":"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=23985bac83fd50c8e29431009302b5442f985096"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:41.900429126Z"}}