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# NSS 3.16.4 release notes

## [Introduction](#introduction)

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Network Security Services (NSS) 3.16.4 is a patch release for NSS 3.16. The bug fixes in NSS
3.16.4 are described in the "Bugs Fixed" section below.
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## [Distribution Information](#distribution_information)

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The HG tag is NSS_3_16_4_RTM. NSS 3.16.4 requires NSPR 4.10.6 or newer.

NSS 3.16.4 source distributions are available on ftp.mozilla.org for secure HTTPS download:

- Source tarballs:
  <https://ftp.mozilla.org/pub/mozilla.org/security/nss/releases/NSS_3_16_4_RTM/src/>
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## [New in NSS 3.16.4](#new_in_nss_3.16.4)

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This release consists primarily of CA certificate changes as listed below, and includes a small
number of bug fixes.
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## [Notable Changes in NSS 3.16.4](#notable_changes_in_nss_3.16.4)

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- The following **1024-bit** root CA certificate was **restored** to allow more time to develop
  a better transition strategy for affected sites. It was removed in
  {ref}`mozilla_projects_nss_nss_3_16_3_release_notes`, but discussion in the
  mozilla.dev.security.policy forum led to the decision to keep this root included longer in
  order to give website administrators more time to update their web servers.

  - CN = GTE CyberTrust Global Root

    - SHA1 Fingerprint: 97:81:79:50:D8:1C:96:70:CC:34:D8:09:CF:79:44:31:36:7E:F4:74

- In {ref}`mozilla_projects_nss_nss_3_16_3_release_notes`, the **1024-bit** "Entrust.net Secure
  Server Certification Authority" root CA certificate (SHA1 Fingerprint:
  99:A6:9B:E6:1A:FE:88:6B:4D:2B:82:00:7C:B8:54:FC:31:7E:15:39) was removed. In NSS 3.16.4, a
  **2048-bit** intermediate CA certificate has been included, without explicit trust. The
  intention is to mitigate the effects of the previous removal of the 1024-bit Entrust.net root
  certificate, because many public Internet sites still use the "USERTrust Legacy Secure Server
  CA" intermediate certificate that is signed by the 1024-bit Entrust.net root certificate. The
  inclusion of the intermediate certificate is a temporary measure to allow those sites to
  function, by allowing them to find a trust path to another **2048-bit** root CA certificate.
  The temporarily included intermediate certificate expires November 1, 2015.
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## [Bugs fixed in NSS 3.16.4](#bugs_fixed_in_nss_3.16.4)

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This Bugzilla query returns all the bugs fixed in NSS 3.16.4:

<https://bugzilla.mozilla.org/buglist.cgi?resolution=FIXED&classification=Components&query_format=advanced&product=NSS&target_milestone=3.16.4>
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