pyOpenSSL: DTLS cookie callback buffer overflow

A flaw was found in pyOpenSSL. The setcookiegeneratecallback callback function can be used to generate DTLS cookies. When the callback returns a cookie string or byte sequence longer than 256 bytes, a buffer overflow can be triggered due to a missing bounds checking before copying the data to a...

Important: Red Hat Security Advisory: Satellite 6.17.8 Async Update

A new release is now available for Red Hat Satellite 6.17 for RHEL 9. Red Hat Satellite is a system management solution that allows organizations to configure and maintain their systems without the necessity to provide public Internet access to their servers or other client systems. It performs...

Important: Red Hat Security Advisory: Satellite 6.18.5 Async Update

A new release is now available for Red Hat Satellite 6.18 for RHEL 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

pyOpenSSL: DTLS cookie callback buffer overflow

A flaw was found in pyOpenSSL. The setcookiegeneratecallback callback function can be used to generate DTLS cookies. When the callback returns a cookie string or byte sequence longer than 256 bytes, a buffer overflow can be triggered due to a missing bounds checking before copying the data to a...

RHEL 8 / 9 : Satellite 6.16.8 Async Update (Important) (RHSA-2026:14874)

The remote Redhat Enterprise Linux 8 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:14874 advisory. Red Hat Satellite is a system management solution that allows organizations to configure and maintain their systems without the necessi...

[SECURITY] Fedora 43 Update: pyOpenSSL-26.1.0-1.fc43

High-level wrapper around a subset of the OpenSSL library, includes among oth ers SSL.Connection objects, wrapping the methods of Python's portable sockets Callbacks written in Python Extensive error-handling mechanism, mirroring OpenSSL's error codes...

Fedora 43 : pyOpenSSL (2026-bc62ef0a6a)

The remote Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-bc62ef0a6a advisory. Update to pyOpenSSL 26.1.0 This update adds support for cryptography v47 and fixes a single security issue: - Fixed X509Name field setters to correctly pass...

Fedora 44 : pyOpenSSL (2026-05d463c932)

The remote Fedora 44 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-05d463c932 advisory. Update to pyOpenSSL 26.1.0 This update adds support for cryptography v47 and fixes a single security issue: - Fixed X509Name field setters to correctly pass...

pyOpenSSL: DTLS cookie callback buffer overflow

A flaw was found in pyOpenSSL. The setcookiegeneratecallback callback function can be used to generate DTLS cookies. When the callback returns a cookie string or byte sequence longer than 256 bytes, a buffer overflow can be triggered due to a missing bounds checking before copying the data to a...

Security Bulletin: pyOpenSSL TLS SNI Callback Exception Handling Flaw Allows Security Bypass

Summary pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 0.14.0 and prior to version 26.0.0, if a user provided callback to settlsextservernamecallback raised an unhandled exception, this would result in a connection being accepted. If a user was relying on this...

Important: Red Hat Security Advisory: RHUI 4.11.4 security update - python-pyOpenSSL

An updated version of Red Hat Update Infrastructure RHUI is now available. RHUI 4.11.4 resolves a security vulnerability in pyOpenSSL. Red Hat Update Infrastructure RHUI provides a highly scalable and redundant framework for managing repositories and content. It also allows cloud providers to...

Security update for python-pyOpenSSL

This update for python-pyOpenSSL fixes the following issue: CVE-2026-27448: unhandled exception can result in connection not being cancelled bsc1259804. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST onlineupdate or "zypper patch"...

Critical Photon OS Security Update - PHSA-2026-4.0-1000

Updates of 'jq', 'python3-pyasn1', 'python3-ujson', 'python3-pyOpenSSL' packages of Photon OS have been released...

SUSE-SU-2026:1416-1 Security update for python-pyOpenSSL

This update for python-pyOpenSSL fixes the following issue: - CVE-2026-27448: unhandled exception can result in connection not being cancelled bsc1259804...

Security update for python-pyOpenSSL

This update for python-pyOpenSSL fixes the following issue: CVE-2026-27448: unhandled exception can result in connection not being cancelled bsc1259804. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST onlineupdate or "zypper patch"...

CLSA-2026-1776098295 pyOpenSSL: Fix of CVE-2026-27448

CVE-2026-27448: fix fail-open in settlsextservernamecallback when callback raises exception...

pyOpenSSL: DTLS cookie callback buffer overflow

A flaw was found in pyOpenSSL. The setcookiegeneratecallback callback function can be used to generate DTLS cookies. When the callback returns a cookie string or byte sequence longer than 256 bytes, a buffer overflow can be triggered due to a missing bounds checking before copying the data to a...

openSUSE Security Advisory (SUSE-SU-2026:1192-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2026 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

SUSE SLED15 / SLES15 / openSUSE 15 Security Update : python-pyOpenSSL (SUSE-SU-2026:1192-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 / openSUSE 15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1192-1 advisory. - CVE-2026-27448: unhandled exception can result in connection not being cancelled bsc1259804. -...

SUSE-SU-2026:1192-1 Security update for python-pyOpenSSL

This update for python-pyOpenSSL fixes the following issues: - CVE-2026-27448: unhandled exception can result in connection not being cancelled bsc1259804. - CVE-2026-27459: large cookie value can lead to a buffer overflow bsc1259808...