{"id":"GHSA-xhjq-w7xm-p8qj","summary":"golang.org/x/crypto/ssh Man-in-the-Middle attack","details":"The Go SSH library (golang.org/x/crypto/ssh) by default does not verify host keys, facilitating man-in-the-middle attacks if ClientConfig.HostKeyCallback is not set. Default behavior changed in commit e4e2799 to require explicitly registering a hostkey verification mechanism.","aliases":["CVE-2017-3204","GO-2020-0013"],"modified":"2024-04-19T21:43:20Z","published":"2023-02-07T22:39:34Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2023-02-07T22:39:34Z","nvd_published_at":null,"cwe_ids":[],"severity":"HIGH"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-3204"},{"type":"WEB","url":"https://github.com/golang/go/issues/19767"},{"type":"WEB","url":"https://github.com/golang/crypto/commit/e4e2799dd7aab89f583e1d898300d96367750991"},{"type":"WEB","url":"https://bridge.grumpy-troll.org/2017/04/golang-ssh-security"},{"type":"WEB","url":"https://go.dev/cl/340830"},{"type":"WEB","url":"https://go.dev/cl/38701"},{"type":"WEB","url":"https://go.dev/issue/19767"},{"type":"WEB","url":"https://go.googlesource.com/crypto/+/e4e2799dd7aab89f583e1d898300d96367750991"},{"type":"WEB","url":"https://godoc.org/golang.org/x/crypto/ssh"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2020-0013"},{"type":"WEB","url":"https://web.archive.org/web/20170423080311/https://www.securityfocus.com/bid/97481"},{"type":"WEB","url":"https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-3204"}],"affected":[{"package":{"name":"golang.org/x/crypto","ecosystem":"Go","purl":"pkg:golang/golang.org/x/crypto"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.0.0-20170330155735-e4e2799dd7aa"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/02/GHSA-xhjq-w7xm-p8qj/GHSA-xhjq-w7xm-p8qj.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}