GHSA-gwc9-m7rh-j2ww

x/crypto/ssh vulnerable to panic via malformed packets

At a glance

Published: 2022-09-07 00:01 UTC
Updated: 2026-09-10 03:49 UTC
CVE: CVE-2021-43565
Aliases: GO-2022-0968
CVSS_V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

The x/crypto/ssh package before 0.0.0-20211202192323-5770296d904e of golang.org/x/crypto allows an unauthenticated attacker to panic an SSH server. When using AES-GCM or ChaCha20Poly1305, consuming a malformed packet which contains an empty plaintext causes a panic.

Affected packages

Package	Versions
Go · golang.org/x/crypto	introduced 0, fixed 0.0.0-20211202192323-5770296d904e

References

https://nvd.nist.gov/vuln/detail/CVE-2021-43565 ADVISORY
https://go.dev/cl/368814 WEB
https://go.dev/issues/49932 WEB
https://groups.google.com/forum/#!forum/golang-announce WEB
https://groups.google.com/g/golang-announce/c/2AR1sKiM-Qs WEB
https://pkg.go.dev/vuln/GO-2022-0968 WEB

Sources

Source	Licence
OSV.dev	CC-BY 4.0 — GitHub Advisory Database