CHANGELOG.md

Certbot change log

Certbot adheres to Semantic Versioning.

0.18.0 - 2017-09-06

Added

• The Nginx plugin now configures Nginx to use 2048-bit Diffie-Hellman parameters. Java 6 clients do not support Diffie-Hellman parameters larger than 1024 bits, so if you need to support these clients you will need to manually modify your Nginx configuration after using the Nginx installer.

Changed

• certbot-auto now installs Certbot in directories under /opt/eff.org. If you had an existing installation from certbot-auto, a symlink is created to the new directory. You can configure certbot-auto to use a different path by setting the environment variable VENV_PATH.
• The Nginx plugin can now be selected in Certbot's interactive output.
• Output verbosity of renewal failures when running with --quiet has been reduced.
• The default revocation reason shown in Certbot help output now is a human readable string instead of a numerical code.
• Plugin selection is now included in normal terminal output.

Fixed

• A newer version of ConfigArgParse is now installed when using certbot-auto causing values set to false in a Certbot INI configuration file to be handled intuitively. Setting a boolean command line flag to false is equivalent to not including it in the configuration file at all.
• New naming conventions preventing certbot-auto from installing OS dependencies on Fedora 26 have been resolved.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/milestone/42?closed=1

0.17.0 - 2017-08-02

Added

• Support in our nginx plugin for modifying SSL server blocks that do not contain certificate or key directives.
• A --max-log-backups flag to allow users to configure or even completely disable Certbot's built in log rotation.
• A --user-agent-comment flag to allow people who build tools around Certbot to differentiate their user agent string by adding a comment to its default value.

Changed

• Due to some awesome work by cryptography project, compilation can now be avoided on most systems when using certbot-auto. This eliminates many problems people have had in the past such as running out of memory, having invalid headers/libraries, and changes to the OS packages on their system after compilation breaking Certbot.
• The --renew-hook flag has been hidden in favor of --deploy-hook. This new flag works exactly the same way except it is always run when a certificate is issued rather than just when it is renewed.
• We have started printing deprecation warnings in certbot-auto for experimentally supported systems with OS packages available.
• A certificate lineage's name is included in error messages during renewal.

Fixed

• Encoding errors that could occur when parsing error messages from the ACME server containing Unicode have been resolved.
• certbot-auto no longer prints misleading messages about there being a newer pip version available when installation fails.
• Certbot's ACME library now properly extracts domains from critical SAN extensions.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/issues?q=is%3Aissue+milestone%3A0.17.0+is%3Aclosed

0.16.0 - 2017-07-05

Added

• A plugin for performing DNS challenges using dynamic DNS updates as defined in RFC 2316. This plugin is packaged separately from Certbot and is available at https://pypi.python.org/pypi/certbot-dns-rfc2136. It supports Python 2.6, 2.7, and 3.3+. At this time, there isn't a good way to install this plugin when using certbot-auto, but this should change in the near future.
• Plugins for performing DNS challenges for the providers DNS Made Easy and LuaDNS. These plugins are packaged separately from Certbot and support Python 2.7 and 3.3+. Currently, there isn't a good way to install these plugins when using certbot-auto, but that should change soon.
• Support for performing TLS-SNI-01 challenges when using the manual plugin.
• Automatic detection of Arch Linux in the Apache plugin providing better default settings for the plugin.

Changed

• The text of the interactive question about whether a redirect from HTTP to HTTPS should be added by Certbot has been rewritten to better explain the choices to the user.
• Simplified HTTP challenge instructions in the manual plugin.

Fixed

• Problems performing a dry run when using the Nginx plugin have been fixed.
• Resolved an issue where certbot-dns-digitalocean's test suite would sometimes fail when ran using Python 3.
• On some systems, previous versions of certbot-auto would error out with a message about a missing hash for setuptools. This has been fixed.
• A bug where Certbot would sometimes not print a space at the end of an interactive prompt has been resolved.
• Nonfatal tracebacks are no longer shown in rare cases where Certbot encounters an exception trying to close its TCP connection with the ACME server.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/issues?q=is%3Aissue+milestone%3A0.16.0+is%3Aclosed

0.15.0 - 2017-06-08

Added

• Plugins for performing DNS challenges for popular providers. Like the Apache and Nginx plugins, these plugins are packaged separately and not included in Certbot by default. So far, we have plugins for Amazon Route 53, Cloudflare, DigitalOcean, and Google Cloud which all work on Python 2.6, 2.7, and 3.3+. Additionally, we have plugins for CloudXNS, DNSimple, NS1 which work on Python 2.7 and 3.3+ (and not 2.6). Currently, there isn't a good way to install these plugins when using certbot-auto, but that should change soon.
• IPv6 support in the standalone plugin. When performing a challenge, the standalone plugin automatically handles listening for IPv4/IPv6 traffic based on the configuration of your system.
• A mechanism for keeping your Apache and Nginx SSL/TLS configuration up to date. When the Apache or Nginx plugins are used, they place SSL/TLS configuration options in the root of Certbot's config directory (/etc/letsencrypt by default). Now when a new version of these plugins run on your system, they will automatically update the file to the newest version if it is unmodified. If you manually modified the file, Certbot will display a warning giving you a path to the updated file which you can use as a reference to manually update your modified copy.
• --http-01-address and --tls-sni-01-address flags for controlling the address Certbot listens on when using the standalone plugin.
• The command certbot certificates that lists certificates managed by Certbot now performs additional validity checks to notify you if your files have become corrupted.

Changed

• Messages custom hooks print to stdout are now displayed by Certbot when not running in --quiet mode.
• jwk and alg fields in JWS objects have been moved into the protected header causing Certbot to more closely follow the latest version of the ACME spec.

Fixed

• Permissions on renewal configuration files are now properly preserved when they are updated.
• A bug causing Certbot to display strange defaults in its help output when using Python <= 2.7.4 has been fixed.
• Certbot now properly handles mixed case domain names found in custom CSRs.
• A number of poorly worded prompts and error messages.

Removed

• Support for OpenSSL 1.0.0 in certbot-auto has been removed as we now pin a newer version of cryptography which dropped support for this version.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/issues?q=is%3Aissue+milestone%3A0.15.0+is%3Aclosed

0.14.2 - 2017-05-25

Fixed

• Certbot 0.14.0 included a bug where Certbot would create a temporary log file (usually in /tmp) if the program exited during argument parsing. If a user provided -h/--help/help, --version, or an invalid command line argument, Certbot would create this temporary log file. This was especially bothersome to certbot-auto users as certbot-auto runs certbot --version internally to see if the script needs to upgrade causing it to create at least one of these files on every run. This problem has been resolved.

More details about this change can be found on our GitHub repo: https://github.com/certbot/certbot/issues?q=is%3Aissue+milestone%3A0.14.2+is%3Aclosed

0.14.1 - 2017-05-16

Fixed

• Certbot now works with configargparse 0.12.0.
• Issues with the Apache plugin and Augeas 1.7+ have been resolved.
• A problem where the Nginx plugin would fail to install certificates on systems that had the plugin's SSL/TLS options file from 7+ months ago has been fixed.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/issues?q=is%3Aissue+milestone%3A0.14.1+is%3Aclosed

0.14.0 - 2017-05-04

Added

• Python 3.3+ support for all Certbot packages. certbot-auto still currently only supports Python 2, but the acme, certbot, certbot-apache, and certbot-nginx packages on PyPI now fully support Python 2.6, 2.7, and 3.3+.
• Certbot's Apache plugin now handles multiple virtual hosts per file.
• Lockfiles to prevent multiple versions of Certbot running simultaneously.

Changed

• When converting an HTTP virtual host to HTTPS in Apache, Certbot only copies the virtual host rather than the entire contents of the file it's contained in.
• The Nginx plugin now includes SSL/TLS directives in a separate file located in Certbot's configuration directory rather than copying the contents of the file into every modified server block.

Fixed

• Ensure logging is configured before parts of Certbot attempt to log any messages.
• Support for the --quiet flag in certbot-auto.
• Reverted a change made in a previous release to make the acme and certbot packages always depend on argparse. This dependency is conditional again on the user's Python version.
• Small bugs in the Nginx plugin such as properly handling empty server blocks and setting server_names_hash_bucket_size during challenges.

As always, a more complete list of changes can be found on GitHub: https://github.com/certbot/certbot/issues?q=is%3Aissue+milestone%3A0.14.0+is%3Aclosed

0.13.0 - 2017-04-06

Added

• --debug-challenges now pauses Certbot after setting up challenges for debugging.
• The Nginx parser can now handle all valid directives in configuration files.
• Nginx ciphersuites have changed to Mozilla Intermediate.
• certbot-auto --no-bootstrap provides the option to not install OS dependencies.

Fixed

• --register-unsafely-without-email now respects --quiet.
• Hyphenated renewal parameters are now saved in renewal config files.
• --dry-run no longer persists keys and csrs.
• Certbot no longer hangs when trying to start Nginx in Arch Linux.
• Apache rewrite rules no longer double-encode characters.

A full list of changes is available on GitHub: https://github.com/certbot/certbot/issues?q=is%3Aissue%20milestone%3A0.13.0%20is%3Aclosed%20

0.12.0 - 2017-03-02

Added

• Certbot now allows non-camelcase Apache VirtualHost names.
• Certbot now allows more log messages to be silenced.

Fixed

• Fixed a regression around using --cert-name when getting new certificates

More information about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/issues?q=is%3Aissue%20milestone%3A0.12.0

0.11.1 - 2017-02-01

Fixed

• Resolved a problem where Certbot would crash while parsing command line arguments in some cases.
• Fixed a typo.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/pulls?q=is%3Apr%20milestone%3A0.11.1%20is%3Aclosed

0.11.0 - 2017-02-01

Added

• When using the standalone plugin while running Certbot interactively and a required port is bound by another process, Certbot will give you the option to retry to grab the port rather than immediately exiting.
• You are now able to deactivate your account with the Let's Encrypt server using the unregister subcommand.
• When revoking a certificate using the revoke subcommand, you now have the option to provide the reason the certificate is being revoked to Let's Encrypt with --reason.

Changed

• Providing --quiet to certbot-auto now silences package manager output.

Removed

• Removed the optional dnspython dependency in our acme package. Now the library does not support client side verification of the DNS challenge.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/issues?q=is%3Aissue+milestone%3A0.11.0+is%3Aclosed

0.10.2 - 2017-01-25

Added

• If Certbot receives a request with a badNonce error, it now automatically retries the request. Since nonces from Let's Encrypt expire, this helps people performing the DNS challenge with the manual plugin who may have to wait an extended period of time for their DNS changes to propagate.

Fixed

• Certbot now saves the --preferred-challenges values for renewal. Previously these values were discarded causing a different challenge type to be used when renewing certs in some cases.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/issues?q=is%3Aissue+milestone%3A0.10.2+is%3Aclosed

0.10.1 - 2017-01-13

Fixed

• Resolve problems where when asking Certbot to update a certificate at an existing path to include different domain names, the old names would continue to be used.
• Fix issues successfully running our unit test suite on some systems.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/issues?q=is%3Aissue+milestone%3A0.10.1+is%3Aclosed

0.10.0 - 2017-01-11

Added

• Added the ability to customize and automatically complete DNS and HTTP domain validation challenges with the manual plugin. The flags --manual-auth-hook and --manual-cleanup-hook can now be provided when using the manual plugin to execute commands provided by the user to perform and clean up challenges provided by the CA. This is best used in complicated setups where the DNS challenge must be used or Certbot's existing plugins cannot be used to perform HTTP challenges. For more information on how this works, see certbot --help manual.
• Added a --cert-name flag for specifying the name to use for the certificate in Certbot's configuration directory. Using this flag in combination with -d/--domains, a user can easily request a new certificate with different domains and save it with the name provided by --cert-name. Additionally, --cert-name can be used to select a certificate with the certonly and run subcommands so a full list of domains in the certificate does not have to be provided.
• Added subcommand certificates for listing the certificates managed by Certbot and their properties.
• Added the delete subcommand for removing certificates managed by Certbot from the configuration directory.
• Certbot now supports requesting internationalized domain names (IDNs).
• Hooks provided to Certbot are now saved to be reused during renewal. If you run Certbot with --pre-hook, --renew-hook, or --post-hook flags when obtaining a certificate, the provided commands will automatically be saved and executed again when renewing the certificate. A pre-hook and/or post-hook can also be given to the certbot renew command either on the command line or in a configuration file to run an additional command before/after any certificate is renewed. Hooks will only be run if a certificate is renewed.
• Support Busybox in certbot-auto.

Changed

• Recategorized -h/--help output to improve documentation and discoverability.

Removed

• Removed the ncurses interface. This change solves problems people were having on many systems, reduces the number of Certbot dependencies, and simplifies our code. Certbot's only interface now is the text interface which was available by providing -t/--text to earlier versions of Certbot.

Fixed

• Many small bug fixes.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/issues?q=is%3Aissue+milestone%3A0.10.0is%3Aclosed

0.9.3 - 2016-10-13

Added

• The Apache plugin uses information about your OS to help determine the layout of your Apache configuration directory. We added a patch to ensure this code behaves the same way when testing on different systems as the tests were failing in some cases.

Changed

• Certbot adopted more conservative behavior about reporting a needed port as unavailable when using the standalone plugin.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/milestone/27?closed=1

0.9.2 - 2016-10-12

Added

• Certbot stopped requiring that all possibly required ports are available when using the standalone plugin. It now only verifies that the ports are available when they are necessary.

Fixed

• Certbot now verifies that our optional dependencies version matches what is required by Certbot.
• Certnot now properly copies the ssl on; directives as necessary when performing domain validation in the Nginx plugin.
• Fixed problem where symlinks were becoming files when they were packaged, causing errors during testing and OS packaging.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/milestone/26?closed=1

0.9.1 - 2016-10-06

Fixed

• Fixed a bug that was introduced in version 0.9.0 where the command line flag -q/--quiet wasn't respected in some cases.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/milestone/25?closed=1

0.9.0 - 2016-10-05

Added

• Added an alpha version of the Nginx plugin. This plugin fully automates the process of obtaining and installing certificates with Nginx. Additionally, it is able to automatically configure security enhancements such as an HTTP to HTTPS redirect and OCSP stapling. To use this plugin, you must have the certbot-nginx package installed (which is installed automatically when using certbot-auto) and provide --nginx on the command line. This plugin is still in its early stages so we recommend you use it with some caution and make sure you have a backup of your Nginx configuration.
• Added support for the DNS challenge in the acme library and DNS in Certbot's manual plugin. This allows you to create DNS records to prove to Let's Encrypt you control the requested domain name. To use this feature, include --manual --preferred-challenges dns on the command line.
• Certbot now helps with enabling Extra Packages for Enterprise Linux (EPEL) on CentOS 6 when using certbot-auto. To use certbot-auto on CentOS 6, the EPEL repository has to be enabled. certbot-auto will now prompt users asking them if they would like the script to enable this for them automatically. This is done without prompting users when using letsencrypt-auto or if -n/--non-interactive/--noninteractive is included on the command line.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/issues?q=is%3Aissue+milestone%3A0.9.0+is%3Aclosed

0.8.1 - 2016-06-14

Added

• Certbot now preserves a certificate's common name when using renew.
• Certbot now saves webroot values for renewal when they are entered interactively.
• Certbot now gracefully reports that the Apache plugin isn't usable when Augeas is not installed.
• Added experimental support for Mageia has been added to certbot-auto.

Fixed

• Fixed problems with an invalid user-agent string on OS X.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/issues?q=is%3Aissue+milestone%3A0.8.1+

0.8.0 - 2016-06-02

Added

• Added the register subcommand which can be used to register an account with the Let's Encrypt CA.
• You can now run certbot register --update-registration to change the e-mail address associated with your registration.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/issues?q=is%3Aissue+milestone%3A0.8.0+

0.7.0 - 2016-05-27

Added

• Added --must-staple to request certificates from Let's Encrypt with the OCSP must staple extension.
• Certbot now automatically configures OSCP stapling for Apache.
• Certbot now allows requesting certificates for domains found in the common name of a custom CSR.

Fixed

• Fixed a number of miscellaneous bugs

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/issues?q=milestone%3A0.7.0+is%3Aissue

0.6.0 - 2016-05-12

Added

• Versioned the datetime dependency in setup.py.

Changed

• Renamed the client from letsencrypt to certbot.

Fixed

• Fixed a small json deserialization error.
• Certbot now preserves domain order in generated CSRs.
• Fixed some minor bugs.

More details about these changes can be found on our GitHub repo: https://github.com/certbot/certbot/issues?q=is%3Aissue%20milestone%3A0.6.0%20is%3Aclosed%20

0.5.0 - 2016-04-05

Added

• Added the ability to use the webroot plugin interactively.
• Added the flags --pre-hook, --post-hook, and --renew-hook which can be used with the renew subcommand to register shell commands to run in response to renewal events. Pre-hook commands will be run before any certs are renewed, post-hook commands will be run after any certs are renewed, and renew-hook commands will be run after each cert is renewed. If no certs are due for renewal, no command is run.
• Added a -q/--quiet flag which silences all output except errors.
• Added an --allow-subset-of-domains flag which can be used with the renew command to prevent renewal failures for a subset of the requested domains from causing the client to exit.

Changed

• Certbot now uses renewal configuration files. In /etc/letsencrypt/renewal by default, these files can be used to control what parameters are used when renewing a specific certificate.

More details about these changes can be found on our GitHub repo: https://github.com/letsencrypt/letsencrypt/issues?q=milestone%3A0.5.0+is%3Aissue

0.4.2 - 2016-03-03

Fixed

• Resolved problems encountered when compiling letsencrypt against the new OpenSSL release.
• Fixed problems encountered when using letsencrypt renew with configuration files from the private beta.

More details about these changes can be found on our GitHub repo: https://github.com/letsencrypt/letsencrypt/issues?q=is%3Aissue+milestone%3A0.4.2

0.4.1 - 2016-02-29

Fixed

• Fixed Apache parsing errors encountered with some configurations.
• Fixed Werkzeug dependency problems encountered on some Red Hat systems.
• Fixed bootstrapping failures when using letsencrypt-auto with --no-self-upgrade.
• Fixed problems with parsing renewal config files from private beta.

More details about these changes can be found on our GitHub repo: https://github.com/letsencrypt/letsencrypt/issues?q=is:issue+milestone:0.4.1

0.4.0 - 2016-02-10

Added

• Added the verb/subcommand renew which can be used to renew your existing certificates as they approach expiration. Running letsencrypt renew will examine all existing certificate lineages and determine if any are less than 30 days from expiration. If so, the client will use the settings provided when you previously obtained the certificate to renew it. The subcommand finishes by printing a summary of which renewals were successful, failed, or not yet due.
• Added a --dry-run flag to help with testing configuration without affecting production rate limits. Currently supported by the renew and certonly subcommands, providing --dry-run on the command line will obtain certificates from the staging server without saving the resulting certificates to disk.
• Added major improvements to letsencrypt-auto. This script has been rewritten to include full support for Python 2.6, the ability for letsencrypt-auto to update itself, and improvements to the stability, security, and performance of the script.
• Added support for Apache 2.2 to the Apache plugin.

More details about these changes can be found on our GitHub repo: https://github.com/letsencrypt/letsencrypt/issues?q=is%3Aissue+milestone%3A0.4.0

0.3.0 - 2016-01-27

Added

• Added a non-interactive mode which can be enabled by including -n or --non-interactive on the command line. This can be used to guarantee the client will not prompt when run automatically using cron/systemd.
• Added preparation for the new letsencrypt-auto script. Over the past couple months, we've been working on increasing the reliability and security of letsencrypt-auto. A number of changes landed in this release to prepare for the new version of this script.

More details about these changes can be found on our GitHub repo: https://github.com/letsencrypt/letsencrypt/issues?q=is%3Aissue+milestone%3A0.3.0

0.2.0 - 2016-01-14

Added

• Added Apache plugin support for non-Debian based systems. Support has been added for modern Red Hat based systems such as Fedora 23, Red Hat 7, and CentOS 7 running Apache 2.4. In theory, this plugin should be able to be configured to run on any Unix-like OS running Apache 2.4.
• Relaxed PyOpenSSL version requirements. This adds support for systems with PyOpenSSL versions 0.13 or 0.14.
• Improved error messages from the client.

Fixed

• Resolved issues with the Apache plugin enabling an HTTP to HTTPS redirect on some systems.

More details about these changes can be found on our GitHub repo: https://github.com/letsencrypt/letsencrypt/issues?q=is%3Aissue+milestone%3A0.2.0

0.1.1 - 2015-12-15

Added

• Added a check that avoids attempting to issue for unqualified domain names like "localhost".

Fixed

• Fixed a confusing UI path that caused some users to repeatedly renew their certs while experimenting with the client, in some cases hitting issuance rate limits.
• Fixed numerous Apache configuration parser problems
• Fixed --webroot permission handling for non-root users

More details about these changes can be found on our GitHub repo: https://github.com/letsencrypt/letsencrypt/issues?q=milestone%3A0.1.1