CVE-2019-11727

Publication date 11 July 2019

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.3 · Medium

Score breakdown

Description

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
mozjs52 24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.10 kinetic Not in release
22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Ignored end of life
20.04 LTS focal Ignored
19.10 eoan Ignored end of life
19.04 disco Ignored end of life
18.10 cosmic Ignored end of life
18.04 LTS bionic Ignored
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
firefox 24.04 LTS noble
Fixed 68.0+build3-0ubuntu1
23.10 mantic
Fixed 68.0+build3-0ubuntu1
23.04 lunar
Fixed 68.0+build3-0ubuntu1
22.10 kinetic
Fixed 68.0+build3-0ubuntu1
22.04 LTS jammy
Fixed 68.0+build3-0ubuntu1
21.10 impish
Fixed 68.0+build3-0ubuntu1
21.04 hirsute
Fixed 68.0+build3-0ubuntu1
20.10 groovy
Fixed 68.0+build3-0ubuntu1
20.04 LTS focal
Fixed 68.0+build3-0ubuntu1
19.10 eoan
Fixed 68.0+build3-0ubuntu1
19.04 disco
Fixed 68.0+build3-0ubuntu0.19.04.1
18.10 cosmic
Fixed 68.0+build3-0ubuntu0.18.10.1
18.04 LTS bionic
Fixed 68.0+build3-0ubuntu0.18.04.1
16.04 LTS xenial
Fixed 68.0+build3-0ubuntu0.16.04.1
14.04 LTS trusty Not in release
mozjs38 24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.10 kinetic Not in release
22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Ignored
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
mozjs60 24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.10 kinetic Not in release
22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
19.10 eoan Ignored end of life
19.04 disco Ignored end of life
18.10 cosmic Ignored end of life
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
nss 24.04 LTS noble
Fixed 2:3.45-1ubuntu1
23.10 mantic
Fixed 2:3.45-1ubuntu1
23.04 lunar
Fixed 2:3.45-1ubuntu1
22.10 kinetic
Fixed 2:3.45-1ubuntu1
22.04 LTS jammy
Fixed 2:3.45-1ubuntu1
21.10 impish
Fixed 2:3.45-1ubuntu1
21.04 hirsute
Fixed 2:3.45-1ubuntu1
20.10 groovy
Fixed 2:3.45-1ubuntu1
20.04 LTS focal
Fixed 2:3.45-1ubuntu1
19.10 eoan
Fixed 2:3.45-1ubuntu1
19.04 disco
Fixed 2:3.42-1ubuntu2.1
18.10 cosmic Ignored end of life
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected
thunderbird 24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar
Not affected
22.10 kinetic
Not affected
22.04 LTS jammy
Not affected
21.10 impish
Not affected
21.04 hirsute
Not affected
20.10 groovy
Not affected
20.04 LTS focal Not in release
19.10 eoan
Not affected
19.04 disco Ignored end of life
18.10 cosmic Ignored end of life
18.04 LTS bionic
Not affected
16.04 LTS xenial
Fixed 1:68.7.0+build1-0ubuntu0.16.04.2
14.04 LTS trusty Not in release

Notes

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.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
nss

Severity score breakdown

Parameter Value
Base score 5.3 · Medium
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

References

Related Ubuntu Security Notices (USN)

Other references