Fedora 42: python-h11 2025-d1fffcc084 critical: chunked encoding issue
fedora
May 11, 2025
Backport upstream fix for CVE-2025-43859
Summary
This is a little HTTP/1.1 library written from scratch in Python, heavily
inspired by hyper-h2. It is a "bring-your-own-I/O" library; h11 contains no IO
code whatsoever. This means you can hook h11 up to your favorite network API,
and that could be anything you want: synchronous, threaded, asynchronous, or
your own implementation of RFC 6214 -- h11 will not judge you. This also means
that h11 is not immediately useful out of the box: it is a toolkit for building
programs that speak HTTP, not something that could directly replace requests or
twisted.web or whatever. But h11 makes it much easier to implement something
like requests or twisted.web.
Update Information:
Backport upstream fix for CVE-2025-43859
Topics Covered
Change Log
* Fri May 2 2025 Robby Callicotte
References
[ 1 ] Bug #2362287 - CVE-2025-43859 python-h11: h11 accepts some malformed Chunked-Encoding bodies [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2362287
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-d1fffcc084' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
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Name: python-h11
Product: Fedora 42
Version: 0.14.0
Release: 7.fc42
Summary: A pure-Python, bring-your-own-I/O implementation of HTTP/1.1
Topics Covered
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