🚨 [security] Update puma: 3.9.1 → 3.12.4 (minor)

🚨 Your version of puma has known security vulnerabilities 🚨

Advisory: CVE-2020-5247 Disclosed: February 27, 2020 URL: https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v

HTTP Response Splitting vulnerability in puma

If an application using Puma allows untrusted input in a response header,
an attacker can use newline characters (i.e. CR, LF) to end the header and
inject malicious content, such as additional headers or an entirely new
response body. This vulnerability is known as HTTP Response Splitting.

While not an attack in itself, response splitting is a vector for several
other attacks, such as cross-site scripting (XSS).

🚨 We recommend to merge and deploy this update as soon as possible! 🚨

Here is everything you need to know about this update. Please take a good look at what changed and the test results before merging this pull request.

What changed?

✳️ puma (3.9.1 → 3.12.4) · Repo · Changelog

Release Notes

3.12.1

v3.12.1

3.11.0

2 features:

HTTP 103 Early Hints (#1403)

421/451 status codes now have correct status messages attached (#1435)

9 bugfixes:

Environment config files (/config/puma/.rb) load correctly (#1340)

Specify windows dependencies correctly (#1434, #1436)

puma/events required in test helper (#1418)

Correct control CLI's option help text (#1416)

Remove a warning for unused variable in mini_ssl (#1409)

Correct pumactl docs argument ordering (#1427)

Fix an uninitialized variable warning in server.rb (#1430)

Fix docs typo/error in Launcher init (#1429)

Deal with leading spaces in RUBYOPT (#1455)

2 other:

Add docs about internals (#1425, #1452)

Tons of test fixes from @MSP-Greg (#1439, #1442, #1464)

3.10.0

3 features:

The status server has a new /gc and /gc-status command. (#1384)

The persistent and first data timeouts are now configurable (#1111)

Implemented RFC 2324 (#1392)

12 bugfixes:

Not really a Puma bug, but @NickolasVashchenko created a gem to workaround a Ruby bug that some users of Puma may be experiencing. See README for more. (#1347)

Fix hangups with SSL and persistent connections. (#1334)

Fix Rails double-binding to a port (#1383)

Fix incorrect thread names (#1368)

Fix issues with /etc/hosts and JRuby where localhost addresses were not correct. (#1318)

Fix compatibility with RUBYOPT="--enable-frozen-string-literal" (#1376)

Fixed some compiler warnings (#1388)

We actually run the integration tests in CI now (#1390)

No longer shipping unnecessary directories in the gemfile (#1391)

If RUBYOPT is nil, we no longer blow up on restart. (#1385)

Correct response to SIGINT (#1377)

Proper exit code returned when we receive a TERM signal (#1337)

3 refactors:

Various test improvements from @grosser

Rubocop (#1325)

Hoe has been removed (#1395)

1 known issue:

Socket activation doesn't work in JRuby. Their fault, not ours. (#1367)

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by more commits than we can show here.

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