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CVE-2019-11727

Published: 11 July 2019

A vulnerability exists where it possible to force Network Security Services (NSS) to sign CertificateVerify with PKCS#1 v1.5 signatures when those are the only ones advertised by server in CertificateRequest in TLS 1.3. PKCS#1 v1.5 signatures should not be used for TLS 1.3 messages. This vulnerability affects Firefox < 68.

Notes

AuthorNote
mdeslaur
only an issue with TLSv1.3. Releases before Bionic have no
TLSv1.3 support. Bionic shipped with an incompatible TLSv1.3
draft, so likely not used.

Priority

Medium

Cvss 3 Severity Score

5.3

Score breakdown

Status

Package Release Status
mozjs52
Launchpad, Ubuntu, Debian
groovy Ignored
(end of life)
jammy Does not exist

kinetic Does not exist

lunar Does not exist

bionic Needs triage

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Needs triage

hirsute Does not exist

impish Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

firefox
Launchpad, Ubuntu, Debian
jammy
Released (68.0+build3-0ubuntu1)
kinetic
Released (68.0+build3-0ubuntu1)
lunar
Released (68.0+build3-0ubuntu1)
bionic
Released (68.0+build3-0ubuntu0.18.04.1)
cosmic
Released (68.0+build3-0ubuntu0.18.10.1)
disco
Released (68.0+build3-0ubuntu0.19.04.1)
eoan
Released (68.0+build3-0ubuntu1)
focal
Released (68.0+build3-0ubuntu1)
groovy
Released (68.0+build3-0ubuntu1)
hirsute
Released (68.0+build3-0ubuntu1)
impish
Released (68.0+build3-0ubuntu1)
trusty Does not exist

upstream
Released (68)
xenial
Released (68.0+build3-0ubuntu0.16.04.1)
mantic
Released (68.0+build3-0ubuntu1)
mozjs38
Launchpad, Ubuntu, Debian
jammy Does not exist

kinetic Does not exist

lunar Does not exist

bionic Needs triage

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

mozjs60
Launchpad, Ubuntu, Debian
jammy Does not exist

kinetic Does not exist

lunar Does not exist

bionic Does not exist

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

nss
Launchpad, Ubuntu, Debian
jammy
Released (2:3.45-1ubuntu1)
kinetic
Released (2:3.45-1ubuntu1)
lunar
Released (2:3.45-1ubuntu1)
bionic Not vulnerable
(code not present)
cosmic Ignored
(end of life)
disco
Released (2:3.42-1ubuntu2.1)
eoan
Released (2:3.45-1ubuntu1)
focal
Released (2:3.45-1ubuntu1)
groovy
Released (2:3.45-1ubuntu1)
hirsute
Released (2:3.45-1ubuntu1)
impish
Released (2:3.45-1ubuntu1)
trusty Not vulnerable
(code not present)
upstream
Released (2:3.45-1)
xenial Not vulnerable
(code not present)
mantic
Released (2:3.45-1ubuntu1)
Patches:
upstream: https://hg.mozilla.org/projects/nss/rev/0a4e8b72a92e144663c2f35d3836f7828cfc97f2
thunderbird
Launchpad, Ubuntu, Debian
jammy Not vulnerable
(1:68.5.0+build1-0ubuntu1)
bionic Not vulnerable
(1:68.4.1+build1-0ubuntu0.18.04.1)
cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Not vulnerable
(1:68.4.1+build1-0ubuntu0.19.10.1)
focal Not vulnerable
(1:68.5.0+build1-0ubuntu1)
groovy Not vulnerable
(1:68.5.0+build1-0ubuntu1)
hirsute Not vulnerable
(1:68.5.0+build1-0ubuntu1)
impish Not vulnerable
(1:68.5.0+build1-0ubuntu1)
kinetic Not vulnerable
(1:68.5.0+build1-0ubuntu1)
lunar Not vulnerable
(1:68.5.0+build1-0ubuntu1)
upstream Needed

xenial
Released (1:68.7.0+build1-0ubuntu0.16.04.2)
mantic Not vulnerable
(1:68.5.0+build1-0ubuntu1)

Severity score breakdown

Parameter Value
Base score 5.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact Low
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N