{"schema_version":"1.9.0","id":"GHSA-3vm4-22fp-5rfm","published":"2022-05-24T22:01:25Z","modified":"2026-09-10T03:49:29.811762044Z","aliases":["CVE-2020-29652","GO-2021-0227"],"summary":"golang.org/x/crypto/ssh NULL Pointer Dereference vulnerability","details":"A nil pointer dereference in the golang.org/x/crypto/ssh component through v0.0.0-20201203163018-be400aefbc4c for Go allows remote attackers to cause a denial of service against SSH servers. An attacker can craft an authentication request message for the `gssapi-with-mic` method which will cause NewServerConn to panic via a nil pointer dereference if ServerConfig.GSSAPIWithMICConfig is nil.","affected":[{"package":{"name":"golang.org/x/crypto","ecosystem":"Go","purl":"pkg:golang/golang.org/x/crypto"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.0.0-20201216223049-8b5274cf687f"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-3vm4-22fp-5rfm/GHSA-3vm4-22fp-5rfm.json"}}],"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-29652"},{"type":"WEB","url":"https://go-review.googlesource.com/c/crypto/+/278852"},{"type":"WEB","url":"https://go.dev/cl/278852"},{"type":"WEB","url":"https://go.googlesource.com/crypto/+/8b5274cf687fd9316b4108863654cc57385531e8"},{"type":"WEB","url":"https://groups.google.com/g/golang-announce/c/ouZIlBimOsE?pli=1"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r68032132c0399c29d6cdc7bd44918535da54060a10a12b1591328bff@%3Cnotifications.skywalking.apache.org%3E"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2021-0227"}],"database_specific":{"cwe_ids":["CWE-476"],"github_reviewed":true,"github_reviewed_at":"2023-02-08T00:29:05Z","nvd_published_at":"2020-12-17T05:15:00Z","severity":"HIGH"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}