build(deps): bump django-anymail from 0.8 to 1.2.1 in /requirements

[dependabot]

Bumps django-anymail from 0.8 to 1.2.1.

Release notes

Sourced from django-anymail's releases.

v1.2.1

Security fix

This release fixes a moderate severity security issue affecting Anymail v0.2–v1.2: Prevent timing attack on WEBHOOK_AUTHORIZATION secret (CVE-2018-6596)

If you are using Anymail's tracking webhooks, you should upgrade to this release, and you may want to rotate to a new WEBHOOK_AUTHORIZATION shared secret (see docs). You should definitely change your webhook auth if your logs indicate attempted exploit.

(If you are only sending email using an Anymail EmailBackend, and have not set up Anymail's event tracking webhooks, this issue does not affect you.)

More information

Anymail's webhook validation was vulnerable to a timing attack. A remote attacker could use this to obtain your WEBHOOK_AUTHORIZATION shared secret, potentially allowing them to post fabricated or malicious email tracking events to your app.

There have not been any reports of attempted exploit. (The vulnerability was discovered through code review.) Attempts would be visible in HTTP logs as a very large number of 400 responses on Anymail's webhook urls (by default "/anymail/esp_name/tracking/"), and in Python error monitoring as a very large number of AnymailWebhookValidationFailure exceptions.

v1.2

New features

• Postmark: Support new click webhook in normalized tracking events

v1.1

Bug fixes

• Mailgun: Support metadata in opened/clicked/unsubscribed tracking webhooks, and fix potential problems if metadata keys collided with Mailgun event parameter names. (See #76, #77)

Other changes

• Internal: Rework Anymail's ParsedEmail class and rename to EmailAddress to align it with similar functionality in the Python 3.6 email package, in preparation for future inbound support. ParsedEmail was not documented for use outside Anymail's internals (so this change does not bump the semver major version), but if you were using it in an undocumented way you will need to update your code.

v1.0

It's official: Anymail is no longer "pre-1.0." The API has been stable for many months, and there's no reason not to use Anymail in production.

Breaking changes

• There are no new breaking changes in the 1.0 release, but a breaking change introduced several months ago in v0.8 is now strictly enforced. If you still have an EMAIL_BACKEND setting that looks like "anymail.backends.espname.EspNameBackend", you'll need to change it to just "anymail.backends.espname.EmailBackend". (Earlier versions had issued a DeprecationWarning. See the v0.8 release notes.)

New features and other changes

• Clean up and document Anymail's Test EmailBackend
• Add notes on handling transient ESP errors and improving batch send performance
• SendGrid: handle Python 2 long integers in metadata and extra headers

v1.0.rc0

Breaking changes

• All backends: The old EspNameBackend names that were deprecated in v0.8 have been removed. Attempting to use the old names will now fail, rather than issue a DeprecationWarning. See the v0.8 release notes.

New features

... (truncated)

Changelog

Sourced from django-anymail's changelog.

v1.2.1

2018-02-02

Security

*  Fix a **moderate severity** security issue affecting Anymail v0.2–v1.2:
   prevent timing attack on WEBHOOK_AUTHORIZATION secret.
   (`CVE-2018-6596 <https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6596>`__)
More information
If you are using Anymail's tracking webhooks, you should upgrade to this release,
and you may want to rotate to a new WEBHOOK_AUTHORIZATION shared secret (see
docs &lt;https://anymail.readthedocs.io/en/stable/tips/securing_webhooks/#use-a-shared-authorization-secret&gt;__).
You should definitely change your webhook auth if your logs indicate attempted exploit.
(If you are only sending email using an Anymail EmailBackend, and have not set up
Anymail's event tracking webhooks, this issue does not affect you.)
Anymail's webhook validation was vulnerable to a timing attack. A remote attacker
could use this to obtain your WEBHOOK_AUTHORIZATION shared secret, potentially allowing
them to post fabricated or malicious email tracking events to your app.
There have not been any reports of attempted exploit. (The vulnerability was discovered
through code review.) Attempts would be visible in HTTP logs as a very large number of
400 responses on Anymail's webhook urls (by default "/anymail/esp_name/tracking/"),
and in Python error monitoring as a very large number of
AnymailWebhookValidationFailure exceptions.
v1.2
2017-11-02
Features

• Postmark: Support new click webhook in normalized tracking events

v1.1

2017-10-28

Fixes

... (truncated)

Commits

• 194b42f Release 1.2.1
• c079983 Security: prevent timing attack on WEBHOOK_AUTHORIZATION secret
• 7029298 Release 1.2
• 7e90818 Postmark: support "clicked" tracking events
• 930753e Release 1.1
• 9acf650 Utils: Finish ParsedEmail --> EmailAddress conversion
• bb68f3d Mailgun: fix event/metadata param extraction in tracking webhook
• 636c8a5 Tests: move sample files into separate subdir
• 3866689 Utils: convert internal ParsedEmail to documented EmailAddress
• fe097ce Utils: add parse_rfc2822date
• Additional commits viewable in compare view

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