Fedora alert FEDORA-2026-5697f4e025 (pyOpenSSL)
| From: | updates--- via package-announce <package-announce@lists.fedoraproject.org> | |
| To: | package-announce@lists.fedoraproject.org | |
| Subject: | [SECURITY] Fedora 44 Update: pyOpenSSL-26.0.0-1.fc44 | |
| Date: | Tue, 31 Mar 2026 00:27:25 +0000 | |
| Message-ID: | <20260331002725.2063077667@bastion01.rdu3.fedoraproject.org> | |
| Archive-link: | Article |
-------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-5697f4e025 2026-03-31 00:16:35.926004+00:00 -------------------------------------------------------------------------------- Name : pyOpenSSL Product : Fedora 44 Version : 26.0.0 Release : 1.fc44 URL : https://pyopenssl.readthedocs.org/ Summary : Python wrapper module around the OpenSSL library Description : High-level wrapper around a subset of the OpenSSL library, includes among others * SSL.Connection objects, wrapping the methods of Python's portable sockets * Callbacks written in Python * Extensive error-handling mechanism, mirroring OpenSSL's error codes -------------------------------------------------------------------------------- Update Information: Update to version 26.0.0 Added support for using aws-lc instead of OpenSSL. Properly raise an error if a DTLS cookie callback returned a cookie longer than DTLS1_COOKIE_LENGTH bytes. Previously this would result in a buffer-overflow. Credit to dark_haxor for reporting the issue. CVE-2026-27459 Added OpenSSL.SSL.Connection.get_group_name to determine which group name was negotiated. Context.set_tlsext_servername_callback now handles exceptions raised in the callback by calling sys.excepthook and returning a fatal TLS alert. Previously, exceptions were silently swallowed and the handshake would proceed as if the callback had succeeded. Credit to Leury Castillo for reporting this issue. CVE-2026-27448 -------------------------------------------------------------------------------- ChangeLog: * Wed Mar 18 2026 Jeremy Cline <jeremycline@microsoft.com> - 26.0.0-1 - Update to v26.0.0 - Added support for using aws-lc instead of OpenSSL. - Properly raise an error if a DTLS cookie callback returned a cookie longer than DTLS1_COOKIE_LENGTH bytes. Previously this would result in a buffer-overflow. Credit to dark_haxor for reporting the issue. CVE-2026-27459 - Added OpenSSL.SSL.Connection.get_group_name to determine which group name was negotiated. - Context.set_tlsext_servername_callback now handles exceptions raised in the callback by calling sys.excepthook and returning a fatal TLS alert. Previously, exceptions were silently swallowed and the handshake would proceed as if the callback had succeeded. Credit to Leury Castillo for reporting this issue. CVE-2026-27448 -------------------------------------------------------------------------------- References: [ 1 ] Bug #2448652 - CVE-2026-27459 pyOpenSSL: DTLS cookie callback buffer overflow [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2448652 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-5697f4e025' 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 -------------------------------------------------------------------------------- -- _______________________________________________ package-announce mailing list -- package-announce@lists.fedoraproject.org To unsubscribe send an email to package-announce-leave@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-cond... List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/package-ann... Do not reply to spam, report it: https://forge.fedoraproject.org/infra/tickets/issues/new