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Fedora 43: perl-Alien-Brotli Critical Security DoS Fix 2025-d93200cf16

fedora
Calendar Grey December 12, 2025
Dist Fedora Esm H88
Update for Fedora 43 addresses critical issues in Brotli and python-urllib3, including decompression bombs and DoS risks.
Update brotli to 1.2.0 and python-urllib3 to 2.6.1

Summary

This distribution installs the brotli compressor, so that it can be used by

other distributions, and provides a way to find the executable.

Update Information:

Update brotli to 1.2.0 and python-urllib3 to 2.6.1. In python-urllib3: Fixed a security issue where streaming API could improperly handle highly compressed HTTP content ("decompression bombs") leading to excessive resource consumption even when a small amount of data was requested. Reading small chunks of compressed data is safer and much more efficient now. (CVE-2025-66471 / `GHSA-2xpw-w6gg-jr37) Fixed a security issue where an attacker could compose an HTTP response with virtually unlimited links in the Content-Encoding header, potentially leading to a denial of service (DoS) attack by exhausting system resources during decoding. The number of allowed chained encodings is now limited to 5. (CVE-2025-66418 / `GHSA-gm62-xv2j-4w53)

Change Log

* Wed Dec 10 2025 Miro Hron\u010dok - 0.2.2-11 - Rebuilt for brotli 1.2.0

References


[ 1 ] Bug #2419408 - python-urllib3-2.6.1 is available https://bugzilla.redhat.com/show_bug.cgi?id=2419408 [ 2 ] Bug #2419493 - CVE-2025-6176 brotli: Brotli decompression bomb DoS in scrapy/scrapy [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2419493

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-d93200cf16' 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: perl-Alien-Brotli
Product: Fedora 43
Version: 0.2.2
Release: 11.fc43
Summary: Find and install the Brotli compressor

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