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59 lines
4.2 KiB
Markdown
59 lines
4.2 KiB
Markdown
<span id="news-2024"></span>
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# Changelog - 2024
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## 23.0.0 - 2024-08-10
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- minor docs fixes ([PR #3217](https://github.com/benoitc/gunicorn/pull/3217), [PR #3089](https://github.com/benoitc/gunicorn/pull/3089), [PR #3167](https://github.com/benoitc/gunicorn/pull/3167))
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- worker_class parameter accepts a class ([PR #3079](https://github.com/benoitc/gunicorn/pull/3079))
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- fix deadlock if request terminated during chunked parsing ([PR #2688](https://github.com/benoitc/gunicorn/pull/2688))
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- permit receiving Transfer-Encodings: compress, deflate, gzip ([PR #3261](https://github.com/benoitc/gunicorn/pull/3261))
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- permit Transfer-Encoding headers specifying multiple encodings. note: no parameters, still ([PR #3261](https://github.com/benoitc/gunicorn/pull/3261))
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- sdist generation now explicitly excludes sphinx build folder ([PR #3257](https://github.com/benoitc/gunicorn/pull/3257))
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- decode bytes-typed status (as can be passed by gevent) as utf-8 instead of raising `TypeError` ([PR #2336](https://github.com/benoitc/gunicorn/pull/2336))
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- raise correct Exception when encounting invalid chunked requests ([PR #3258](https://github.com/benoitc/gunicorn/pull/3258))
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- the SCRIPT_NAME and PATH_INFO headers, when received from allowed forwarders, are no longer restricted for containing an underscore ([PR #3192](https://github.com/benoitc/gunicorn/pull/3192))
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- include IPv6 loopback address ``[::1]`` in default for [forwarded-allow-ips](reference/settings.md#forwarded_allow_ips) and [proxy-allow-ips](reference/settings.md#proxy_allow_ips) ([PR #3192](https://github.com/benoitc/gunicorn/pull/3192))
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!!! note
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- The SCRIPT_NAME change mitigates a regression that appeared first in the 22.0.0 release
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- Review your [forwarded-allow-ips](reference/settings.md#forwarded_allow_ips) setting if you are still not seeing the SCRIPT_NAME transmitted
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- Review your [forwarder-headers](reference/settings.md#forwarder_headers) setting if you are missing headers after upgrading from a version prior to 22.0.0
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### Breaking changes
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- refuse requests where the uri field is empty ([PR #3255](https://github.com/benoitc/gunicorn/pull/3255))
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- refuse requests with invalid CR/LR/NUL in heade field values ([PR #3253](https://github.com/benoitc/gunicorn/pull/3253))
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- remove temporary ``--tolerate-dangerous-framing`` switch from 22.0 ([PR #3260](https://github.com/benoitc/gunicorn/pull/3260))
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- If any of the breaking changes affect you, be aware that now refused requests can post a security problem, especially so in setups involving request pipe-lining and/or proxies.
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## 22.0.0 - 2024-04-17
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- use `utime` to notify workers liveness
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- migrate setup to pyproject.toml
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- fix numerous security vulnerabilities in HTTP parser (closing some request smuggling vectors)
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- parsing additional requests is no longer attempted past unsupported request framing
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- on HTTP versions < 1.1 support for chunked transfer is refused (only used in exploits)
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- requests conflicting configured or passed SCRIPT_NAME now produce a verbose error
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- Trailer fields are no longer inspected for headers indicating secure scheme
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- support Python 3.12
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### Breaking changes
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- minimum version is Python 3.7
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- the limitations on valid characters in the HTTP method have been bounded to Internet Standards
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- requests specifying unsupported transfer coding (order.md) are refused by default (rare.md)
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- HTTP methods are no longer casefolded by default (IANA method registry contains none affected)
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- HTTP methods containing the number sign (#) are no longer accepted by default (rare.md)
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- HTTP versions < 1.0 or >= 2.0 are no longer accepted by default (rare, only HTTP/1.1 is supported)
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- HTTP versions consisting of multiple digits or containing a prefix/suffix are no longer accepted
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- HTTP header field names Gunicorn cannot safely map to variables are silently dropped, as in other software
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- HTTP headers with empty field name are refused by default (no legitimate use cases, used in exploits)
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- requests with both Transfer-Encoding and Content-Length are refused by default (such a message might indicate an attempt to perform request smuggling)
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- empty transfer codings are no longer permitted (reportedly seen with really old & broken proxies)
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### Security
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- fix CVE-2024-1135
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