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CVE-2020-29652

Published: 17 December 2020

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.

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
bionic Not vulnerable
(code not present)
focal Needed

hirsute
Released (1:0.0~git20201221.eec23a3-1)
upstream
Released (1:0.0~git20201221.eec23a3-1)
kinetic
Released (1:0.0~git20201221.eec23a3-1)
lunar
Released (1:0.0~git20201221.eec23a3-1)
groovy Ignored
(end of life)
impish
Released (1:0.0~git20201221.eec23a3-1)
jammy
Released (1:0.0~git20201221.eec23a3-1)
trusty Does not exist

xenial Not vulnerable
(code not present)
mantic
Released (1:0.0~git20201221.eec23a3-1)
Patches:
upstream: https://go.googlesource.com/crypto/+/8b5274cf687fd9316b4108863654cc57385531e8%5E%21/#F0
kubernetes
Launchpad, Ubuntu, Debian
hirsute Ignored
(end of life)
kinetic Ignored
(end of life, was needs-triage)
lunar Needs triage

bionic Does not exist

focal Needs triage

groovy Ignored
(end of life)
impish Ignored
(end of life)
jammy Needs triage

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Needs triage

snapd
Launchpad, Ubuntu, Debian
kinetic Not vulnerable

lunar Not vulnerable

bionic Not vulnerable

focal Not vulnerable

groovy Not vulnerable

hirsute Not vulnerable

impish Not vulnerable

jammy Not vulnerable

trusty Does not exist

upstream Needs triage

xenial Not vulnerable

mantic Not vulnerable

lxd
Launchpad, Ubuntu, Debian
bionic Not vulnerable

focal Not vulnerable
(code-not-present)
groovy Not vulnerable
(code-not-present)
hirsute Not vulnerable
(code-not-present)
impish Not vulnerable
(code-not-present)
trusty Does not exist

upstream Needs triage

xenial Not vulnerable

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