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CVE-2021-43565

Published: 6 September 2022

The x/crypto/ssh package before 0.0.0-20211202192323-5770296d904e of golang.org/x/crypto allows an attacker to panic an SSH server.

Notes

AuthorNote
jdstrand
snapd contains an embedded copy of golang-go.crypto
lxd in 18.04 LTS and earlier contains an embedded copy of
golang-go.crypto
mdeslaur
snapd and lxd only use the terminal sub-package, not the ssh
part of golang-go.crypto, so they are not vulnerable

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
golang-go.crypto
Launchpad, Ubuntu, Debian
jammy Needs triage

bionic Needs triage

focal Needs triage

hirsute Ignored
(end of life)
trusty Does not exist

upstream Needs triage

xenial Needs triage

kinetic Ignored
(end of life, was needs-triage)
impish Ignored
(end of life)
lunar Needs triage

mantic Needs triage

Patches:
upstream: https://github.com/golang/crypto/commit/5770296d904e90f15f38f77dfc2e43fdf5efc083
lxd
Launchpad, Ubuntu, Debian
xenial Not vulnerable
(code-not-present)
bionic Not vulnerable
(code-not-present)
focal Not vulnerable
(code-not-present)
hirsute Not vulnerable
(code-not-present)
impish Not vulnerable
(code-not-present)
trusty Does not exist

upstream Needs triage

snapd
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code-not-present)
focal Not vulnerable
(code-not-present)
hirsute Not vulnerable
(code-not-present)
impish Not vulnerable
(code-not-present)
jammy Not vulnerable
(code-not-present)
trusty Does not exist

upstream Needs triage

xenial Not vulnerable
(code-not-present)
kinetic Not vulnerable
(code-not-present)
lunar Not vulnerable
(code-not-present)
mantic Not vulnerable
(code-not-present)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H