-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: rhvm-appliance security update Advisory ID: RHSA-2019:1208-01 Product: Red Hat Virtualization Advisory URL: https://access.redhat.com/errata/RHSA-2019:1208 Issue date: 2019-05-14 CVE Names: CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091 ===================================================================== 1. Summary: An update for rhvm-appliance is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7. 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 Virtualization 4 Hypervisor for RHEL 7 - x86_64 Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts - x86_64 3. Description: The RHV-M Virtual Appliance automates the process of installing and configuring the Red Hat Virtualization Manager. The appliance is available to download as an OVA file from the Customer Portal. Security Fix(es): * A flaw was found in the implementation of the "fill buffer", a mechanism used by modern CPUs when a cache-miss is made on L1 CPU cache. If an attacker can generate a load operation that would create a page fault, the execution will continue speculatively with incorrect data from the fill buffer while the data is fetched from higher level caches. This response time can be measured to infer data in the fill buffer. (CVE-2018-12130) * Modern Intel microprocessors implement hardware-level micro-optimizations to improve the performance of writing data back to CPU caches. The write operation is split into STA (STore Address) and STD (STore Data) sub-operations. These sub-operations allow the processor to hand-off address generation logic into these sub-operations for optimized writes. Both of these sub-operations write to a shared distributed processor structure called the 'processor store buffer'. As a result, an unprivileged attacker could use this flaw to read private data resident within the CPU's processor store buffer. (CVE-2018-12126) * Microprocessors use a ‘load port’ subcomponent to perform load operations from memory or IO. During a load operation, the load port receives data from the memory or IO subsystem and then provides the data to the CPU registers and operations in the CPU’s pipelines. Stale load operations results are stored in the 'load port' table until overwritten by newer operations. Certain load-port operations triggered by an attacker can be used to reveal data about previous stale requests leaking data back to the attacker via a timing side-channel. (CVE-2018-12127) * Uncacheable memory on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. (CVE-2019-11091) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. 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/2974891 5. Bugs fixed (https://bugzilla.redhat.com/): 1646781 - CVE-2018-12126 hardware: Microarchitectural Store Buffer Data Sampling (MSBDS) 1646784 - CVE-2018-12130 hardware: Microarchitectural Fill Buffer Data Sampling (MFBDS) 1667782 - CVE-2018-12127 hardware: Micro-architectural Load Port Data Sampling - Information Leak (MLPDS) 1705312 - CVE-2019-11091 hardware: Microarchitectural Data Sampling Uncacheable Memory (MDSUM) 6. Package List: Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts: Source: rhvm-appliance-4.3-20190506.0.el7.src.rpm x86_64: rhvm-appliance-4.3-20190506.0.el7.x86_64.rpm Red Hat Virtualization 4 Hypervisor for RHEL 7: Source: rhvm-appliance-4.3-20190506.0.el7.src.rpm x86_64: rhvm-appliance-4.3-20190506.0.el7.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-2018-12126 https://access.redhat.com/security/cve/CVE-2018-12127 https://access.redhat.com/security/cve/CVE-2018-12130 https://access.redhat.com/security/cve/CVE-2019-11091 https://access.redhat.com/security/vulnerabilities/mds https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2019 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXNsvNdzjgjWX9erEAQjIXg/+IgEjKjFNvMRmExor3Uo50+VbR/JwT8z6 4jG4AFgCnP/he3jbxGe4Eto7QggbojiqCXLjVDU2CReivbVJkxb9mr/9q37h8fy7 lv5sYSmD6SEYfQkSCrjJ73P0rqHWyCD9G4GzSS4NyVVJQCGUWJb7M3CwnKNo0jb1 /d6aq9HvbkVqXSEiEtCyegSjRvnPkQ1z8H2hVM3Wv+lvkCkEfM0hPLggszwDzZsN fqmqKH8OIldKgIjwoaZM0JmWZxn3DhBkxWnM/t4FrjmdmY/RmQeFV862YOBF8Wbe gLpnNcTvcUIoxY/TYzEUxaRgP3flB/AjIOStfkI/+gNlmnvzwU/Vi3l8aekyHpa1 ZB6/LDrbntmfYcfDpnqeaSTcgANyZXOGoD1BlDQGTJkAkOZuHXSJ6nviWz3wK6cv cj4CbOMTZ+zpMrvJkcKZsThs6/riNpQCKIL9b/zquReL/jrIqkNjHopjDzLDolPG UB59Y3HBDh9vgBefH+RCjBjpsE3SUND0m0TT7yKv07hjg82MjsmjZ4mcXORRcleC cXHPM0FWS78nNNonGEg/CevTMCEsrtIbMpQfCd51c/kXsXXh/SSY7C88Ps4e2Oop KZMvuFtSqbGnPqQqqy4In+xynqMy4TR0q/HH8yYrfZ4wrswgW3VTbdMAoVI8Uwp8 /HN3OozU/xI= =lEoX -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce