{"id":"CVE-2020-9283","aliases":["GHSA-ffhg-7mh4-33c4","GO-2020-0012"],"url":"https://o3.security/vulnerability/CVE-2020-9283","summary":"Improper Verification of Cryptographic Signature in golang.org/x/crypto","details":"golang.org/x/crypto before v0.0.0-20200220183623-bac4c82f6975 for Go allows a panic during signature verification in the golang.org/x/crypto/ssh package. A client can attack an SSH server that accepts public keys. Also, a server can attack any SSH client.","published":"2020-02-20T20:15:10.437Z","modified":"2026-03-14T14:48:27.291068Z","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":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Go","name":"golang.org/x/crypto","fixedVersion":"0.0.0-20200220183623-bac4c82f6975"}],"fix":{"url":"https://github.com/golang/crypto/commit/bac4c82f69751a6dd76e702d54b3ceb88adab236","label":"golang/crypto@bac4c82"},"references":[{"type":"WEB","url":"https://groups.google.com/forum/#%21topic/golang-announce/3L45YRc91SY"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/06/msg00017.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00014.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/11/msg00027.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/11/msg00031.html"},{"type":"EVIDENCE","url":"http://packetstormsecurity.com/files/156480/Go-SSH-0.0.2-Denial-Of-Service.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-9283"},{"type":"WEB","url":"https://github.com/golang/crypto/commit/bac4c82f69751a6dd76e702d54b3ceb88adab236"},{"type":"PACKAGE","url":"https://github.com/golang/crypto"},{"type":"WEB","url":"https://go.dev/cl/220357"},{"type":"WEB","url":"https://go.googlesource.com/crypto/+/bac4c82f69751a6dd76e702d54b3ceb88adab236"},{"type":"WEB","url":"https://groups.google.com/forum/#!topic/golang-announce/3L45YRc91SY"},{"type":"WEB","url":"https://groups.google.com/g/golang-announce/c/3L45YRc91SY"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2020-0012"},{"type":"WEB","url":"https://www.exploit-db.com/exploits/48121"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-03-14T14:48:27.291068Z"}}