Fedora alert FEDORA-2025-d93200cf16 (python-urllib3)
| From: | updates--- via package-announce <package-announce@lists.fedoraproject.org> | |
| To: | package-announce@lists.fedoraproject.org | |
| Subject: | [SECURITY] Fedora 43 Update: python-urllib3-2.6.1-1.fc43 | |
| Date: | Fri, 12 Dec 2025 01:34:09 +0000 | |
| Message-ID: | <20251212013409.7A6816851C@bastion01.rdu3.fedoraproject.org> | |
| Archive-link: | Article |
-------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2025-d93200cf16 2025-12-12 01:32:22.209029+00:00 -------------------------------------------------------------------------------- Name : python-urllib3 Product : Fedora 43 Version : 2.6.1 Release : 1.fc43 URL : https://github.com/urllib3/urllib3 Summary : HTTP library with thread-safe connection pooling, file post, and more Description : urllib3 is a powerful, user-friendly HTTP client for Python. urllib3 brings many critical features that are missing from the Python standard libraries: • Thread safety. • Connection pooling. • Client-side SSL/TLS verification. • File uploads with multipart encoding. • Helpers for retrying requests and dealing with HTTP redirects. • Support for gzip, deflate, brotli, and zstd encoding. • Proxy support for HTTP and SOCKS. • 100% test coverage. -------------------------------------------------------------------------------- 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) -------------------------------------------------------------------------------- ChangeLog: * Mon Dec 8 2025 Benjamin A. Beasley <code@musicinmybrain.net> - 2.6.1-1 - Update to 2.6.1 (close RHBZ#2419408) - Fixes CVE-2025-66471 / GHSA-2xpw-w6gg-jr37 - Fixes CVE-2025-66418 / GHSA-gm62-xv2j-4w53 * Mon Dec 8 2025 Miro Hrončok <miro@hroncok.cz> - 2.5.0-4 - Allow building with setuptools_scm 9 -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- 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#upgr... All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys --------------------------------------------------------------------------------
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