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CVE-2021-29923

Published: 7 August 2021

Go before 1.17 does not properly consider extraneous zero characters at the beginning of an IP address octet, which (in some situations) allows attackers to bypass access control that is based on IP addresses, because of unexpected octal interpretation. This affects net.ParseIP and net.ParseCIDR.

Notes

AuthorNote
mdeslaur
Packages built using golang need to be rebuilt once the
vulnerability has been fixed. This CVE entry does not
list packages that need rebuilding outside of the main
repository or the Ubuntu variants with PPA overlays.
Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
golang
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

golang-1.10
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Needs triage

upstream Needs triage

xenial Needs triage

golang-1.13
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

hirsute Ignored
(reached end-of-life)
impish Ignored
(reached end-of-life)
jammy Needs triage

trusty Does not exist

upstream Needs triage

xenial Ignored
(end of standard support, was needs-triage)
golang-1.14
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needs triage

hirsute Ignored
(reached end-of-life)
impish Does not exist

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

golang-1.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

hirsute Ignored
(reached end-of-life)
impish Ignored
(reached end-of-life)
trusty Does not exist

upstream Needs triage

xenial Does not exist

golang-1.16
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needs triage

hirsute Ignored
(reached end-of-life)
impish Ignored
(reached end-of-life)
jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Ignored
(out of standard support)
golang-1.6
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Needs triage

golang-1.8
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

golang-1.9
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist