-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: libvirt security update Advisory ID: RHSA-2018:3399-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:3399 Issue date: 2018-10-30 CVE Names: CVE-2018-3639 ==================================================================== 1. Summary: An update for libvirt is now available for Red Hat Enterprise Linux 6.4 Advanced Update Support. 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 the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Server AUS (v. 6.4) - x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 6.4) - x86_64 3. Description: The libvirt library contains a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remote management of virtualized systems. Security Fix(es): * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks. (CVE-2018-3639 virt-ssbd AMD) Note: This is the libvirt side of the CVE-2018-3639 mitigation. Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project Zero) for reporting this issue. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the updated packages, libvirtd will be restarted automatically. 5. Bugs fixed (https://bugzilla.redhat.com/): 1566890 - CVE-2018-3639 hw: cpu: speculative store bypass 6. Package List: Red Hat Enterprise Linux Server AUS (v. 6.4): Source: libvirt-0.10.2-18.el6_4.18.src.rpm x86_64: libvirt-0.10.2-18.el6_4.18.x86_64.rpm libvirt-client-0.10.2-18.el6_4.18.i686.rpm libvirt-client-0.10.2-18.el6_4.18.x86_64.rpm libvirt-debuginfo-0.10.2-18.el6_4.18.i686.rpm libvirt-debuginfo-0.10.2-18.el6_4.18.x86_64.rpm libvirt-devel-0.10.2-18.el6_4.18.i686.rpm libvirt-devel-0.10.2-18.el6_4.18.x86_64.rpm libvirt-python-0.10.2-18.el6_4.18.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 6.4): Source: libvirt-0.10.2-18.el6_4.18.src.rpm x86_64: libvirt-debuginfo-0.10.2-18.el6_4.18.x86_64.rpm libvirt-lock-sanlock-0.10.2-18.el6_4.18.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2018-3639 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/ssbd 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBW9hmBNzjgjWX9erEAQjQ/g/8CVispqYX421Azt6eSIHRqxRgQctCHOHr HOwDW1KapBy1D1qlnBMHHfPwDISY38Mscc6ZewgddPzeLuSr5lpTX03qFi1SUmum AR+Fqk8DwgTUattWL04mGIsIQUDXAHbHTpAm5vO9cFpyBN+uMaj+Ys86d54i4n5X M9U1MyHzMYz9k8m+J5ofeNLwH4CaoFwOOdesarlHb9aL8du+/Muf5vjd+fQ6U8H5 JoLI5kRzrd3029uwDgj04nwsU669K9CVtGtwhQ2kbbPjatNSpufb4uEEN6jKm6LR MTZ1+SmW8Er6/OA0ZMmUXB4OTGlxmA4nb0knteKGYQmnrae2mRAjXOvsq0rI8Aek numqtRZnSwufXZaaoB0SmvsqfU9Z5l6Vn20AREAxYvGRKFeoJcQ+JGsErGYgIwcr uk0r3B8bYqbtOsAS86NpKxCGJxmLeEW7vgroUqHg/F+pgPS8PY2BpwCohtEBYOQg nJO8MCVI6jn7Ox6OGXjvFK87Gue8P6N5RENciRGwxqR696Xw9ZMsvAFutjqI3p3Q HeQ2LiX3sRRbjiVZwYAZ1rzC6igzbAajBxT4axrQ0IMEHD5saUlA50sBpFVrWMh6 mLrzcVkaDZBsvu55CeZQl8KByrUoNnBEIm8E+XM0nYO19XSKdNqGGnXTTu916nab xrTcYMj837w=CIOc -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce