ID

VAR-201905-0709

CVE

CVE-2018-12126

TITLE

Multiple Intel Product Information Disclosure Vulnerabilities (CNVD-2019-22231)

DESCRIPTION

Microarchitectural Store Buffer Data Sampling (MSBDS): Store buffers on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-update-guidance_05132019.pdf. Intel Xeon Scalable Processors and so on are products of Intel Corporation of the United States. Intel XeonScalable Processors is a scalable server central processing unit (CPU). IntelXeonProcessorE7v4Family is a XeonE7 series server central processing unit (CPU). IntelXeonProcessorE5v4Family is a XeonE5 series server central processing unit (CPU). An information disclosure vulnerability exists in several Intel products. The vulnerability stems from errors in the configuration of the network system or product during operation. An unauthorized attacker can exploit the vulnerability to obtain sensitive information about the affected component. The following products and versions are affected: Intel Xeon Scalable Processors; Xeon Processor E7 v4 Family; Xeon Processor E5 v4 Family; Xeon Processor E3 v6 Family; Xeon Processor E3 v4 Family; Xeon Processor E; Xeon E Processor; Xeon D Processor; Puma; Pentium Processor Silver Series; Pentium Processor N Series; Pentium Processor J Series; Pentium Gold Processor Series; Mobile Communications Platforms; Microcode; Core X series Processors; Celeron Processor N Series; Celeron Processor J Series; Celeron Processor G Series; Atom Processor X Series ;Atom Processor E3900 Series;Atom Processor E3800 Series;Atom Processor. Relevant releases/architectures: RHV-M 4.3 - noarch 3. It includes the configuration of the Red Hat Support plugin, copying downstream-only artifacts to the ISO domain, and links to the knowledgebase and other support material. In addition this update provides mitigations for the "TSX Asynchronous Abort" speculative side channel attack. For additional information please refer to https://xenbits.xen.org/xsa/advisory-305.html For the oldstable distribution (stretch), these problems have been fixed in version 4.8.5.final+shim4.10.4-1+deb9u12. Note that this will be the last security update for Xen in the oldstable distribution; upstream support for the 4.8.x branch ended by the end of December 2019. If you rely on security support for your Xen installation an update to the stable distribution (buster) is recommended. For the stable distribution (buster), these problems have been fixed in version 4.11.3+24-g14b62ab3e5-1~deb10u1. We recommend that you upgrade your xen packages. For the detailed security status of xen please refer to its security tracker page at: https://security-tracker.debian.org/tracker/xen Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEtuYvPRKsOElcDakFEMKTtsN8TjYFAl4c7kEACgkQEMKTtsN8 TjYTuQ//R8WXtoC9qnD7wrV1E9skzu0YgXXUJDgaY6V2cTxRZ9n+RC7szVBXqfjJ OzOhNDESTG1aeOg/vnwHgDLMigIe5HlNSYPMXFk9IqOtsRTaP+Ddp1e/msfudYqP rOiI+NzRk2MnFwT348SCuJK7tS/6coj2IECaYc+LOMp05eg+y4r+KLc6FFWm/UEB 9M0SQMv6vMHaSCqJ7OlzE9j1pta3qPHp6vDpDQC0ngjvTJI85Z6l1p2dJ600bcZR Am4nl/1va8Mxc6hFYQ0h8TV2leELsw3B4f5f4LPKh5U7ZiHM5DfWGZLKxf/SJRpf brt0wwYABM0qMqqelrEZOHWqdFg17ozYkNhuUYYLS3P/AWiOZURHq/xszsv98dGh EUzMPL/P0mHyxrOlG8BrhaZ0O2FfAABRdfNDEO4pDGQSFYYpniOW9a+6yZsmKJDg njryOlSwXa/yrqde5JSqDlJFtwnRZu5IhdeCERXfczpauBrqOzUCUX1n72JSrtlD TUeMMj3QBbuLtJhFbQZH+/dqbQlYKu0u7VPA5fP+7nxsG+9NqwRHv6J2lh0YKXYz ej2WFpM+oBpr12dtFx2buZVzZofHGZd5y1kjGq0yRwnBSrdSKYC5dhtX32weHfSL jnN2rWTafoKwSOJvvofoMjmjcYwTfBzorTO1EX01FPxZqy/nrsA=3Qmh -----END PGP SIGNATURE----- . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: qemu-kvm security update Advisory ID: RHSA-2019:1178-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:1178 Issue date: 2019-05-14 CVE Names: CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091 ===================================================================== 1. Summary: An update for qemu-kvm is now available 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 Enterprise Linux Client (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 3. Description: Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. 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-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/11258 After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect. 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 Enterprise Linux Client (v. 7): Source: qemu-kvm-1.5.3-160.el7_6.2.src.rpm x86_64: qemu-img-1.5.3-160.el7_6.2.x86_64.rpm qemu-kvm-1.5.3-160.el7_6.2.x86_64.rpm qemu-kvm-common-1.5.3-160.el7_6.2.x86_64.rpm qemu-kvm-debuginfo-1.5.3-160.el7_6.2.x86_64.rpm qemu-kvm-tools-1.5.3-160.el7_6.2.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): Source: qemu-kvm-1.5.3-160.el7_6.2.src.rpm x86_64: qemu-img-1.5.3-160.el7_6.2.x86_64.rpm qemu-kvm-1.5.3-160.el7_6.2.x86_64.rpm qemu-kvm-common-1.5.3-160.el7_6.2.x86_64.rpm qemu-kvm-debuginfo-1.5.3-160.el7_6.2.x86_64.rpm qemu-kvm-tools-1.5.3-160.el7_6.2.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: qemu-kvm-1.5.3-160.el7_6.2.src.rpm x86_64: qemu-img-1.5.3-160.el7_6.2.x86_64.rpm qemu-kvm-1.5.3-160.el7_6.2.x86_64.rpm qemu-kvm-common-1.5.3-160.el7_6.2.x86_64.rpm qemu-kvm-debuginfo-1.5.3-160.el7_6.2.x86_64.rpm qemu-kvm-tools-1.5.3-160.el7_6.2.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: qemu-kvm-1.5.3-160.el7_6.2.src.rpm x86_64: qemu-img-1.5.3-160.el7_6.2.x86_64.rpm qemu-kvm-1.5.3-160.el7_6.2.x86_64.rpm qemu-kvm-common-1.5.3-160.el7_6.2.x86_64.rpm qemu-kvm-debuginfo-1.5.3-160.el7_6.2.x86_64.rpm qemu-kvm-tools-1.5.3-160.el7_6.2.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 <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2019 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXNsSltzjgjWX9erEAQgcFA/8DBugTza3qjoCHbrEa6YVc6QqGGsWdtds RH+AwYirPLgQRbQznCCVI/6AyYIdXTQDHyLNyRfbKb1nl4LMMcRHVFlTdkggCobS 3jUz1vguDv+nZdWCf0J3NuuKSC8Z9xmx0FRLUJLu07r1a3A3MnlFUMO/AOr9psna C9dnfvRD7YtbFh7TxXUalYoEexIQ3LRjCZsmRyiEzcdv8/6+s2sgDCf0aeBHIEbL EvfgmkNNqgM73ZHEoEwwcFxdWvv6CZJrKVDH3ykrWwPmbdGr5FuBONqZ8UESVmHK vCxcMP1J2HKHwG/irBNShSOcYKwePhBT+35hf8mPPJFUvCxqXuLDHt71OelQmF5z vykmsKtlrcBLodFbMrpV9lSTbZAHSAvlpqe3LjzfetWKuVMvfGlMrx4Mtfq8Avhj R9cSAAmVqj6gEuoV2s5VIaZCcRuSXVPjwJY+m+br0qTT+kymmi05cgsy7bfPvGkG rRo58yZvj6pcAJ1AoXFebTBHlSXtAPVv+VQD5BkF1BhSI8iIhn2cQNB6HM3AocHQ IVtkUvq7Yocwt0IFwoF+JmSjtKzxggDFoYrlztqbMHQ2+VIp2/aDSdcoh2r4cyuz PBAAO+VMfsJpoDAP62GdCILayzGGQV0cY3Xam/0hwFJDGmDJzuqB73yQawhmSIrT vcx66izbyys= =AYjv -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . ========================================================================== Ubuntu Security Notice USN-3978-1 May 14, 2019 qemu update ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 19.04 - Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 ESM Summary: Several issues were addressed in QEMU. Software Description: - qemu: Machine emulator and virtualizer Details: Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Giorgi Maisuradze, Dan Horea Lutas, Andrei Lutas, Volodymyr Pikhur, Stephan van Schaik, Alyssa Milburn, Sebastian \xd6sterlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, Cristiano Giuffrida, Moritz Lipp, Michael Schwarz, and Daniel Gruss discovered that memory previously stored in microarchitectural fill buffers of an Intel CPU core may be exposed to a malicious process that is executing on the same CPU core. (CVE-2018-12130) Brandon Falk, Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Stephan van Schaik, Alyssa Milburn, Sebastian \xd6sterlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, and Cristiano Giuffrida discovered that memory previously stored in microarchitectural load ports of an Intel CPU core may be exposed to a malicious process that is executing on the same CPU core. (CVE-2018-12127) Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Marina Minkin, Daniel Moghimi, Moritz Lipp, Michael Schwarz, Jo Van Bulck, Daniel Genkin, Daniel Gruss, Berk Sunar, Frank Piessens, and Yuval Yarom discovered that memory previously stored in microarchitectural store buffers of an Intel CPU core may be exposed to a malicious process that is executing on the same CPU core. (CVE-2018-12126) Kurtis Miller discovered that a buffer overflow existed in QEMU when loading a device tree blob. A local attacker could use this to execute arbitrary code. (CVE-2018-20815) Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Volodrmyr Pikhur, Moritz Lipp, Michael Schwarz, Daniel Gruss, Stephan van Schaik, Alyssa Milburn, Sebastian \xd6sterlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, and Cristiano Giuffrida discovered that uncacheable memory previously stored in microarchitectural buffers of an Intel CPU core may be exposed to a malicious process that is executing on the same CPU core. (CVE-2019-11091) It was discovered that a NULL pointer dereference existed in the sun4u power device implementation in QEMU. A local attacker could use this to cause a denial of service. This issue only affected Ubuntu 18.10 and Ubuntu 19.04. (CVE-2019-5008) William Bowling discovered that an information leak existed in the SLiRP networking implementation of QEMU. (CVE-2019-9824) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 19.04: qemu 1:3.1+dfsg-2ubuntu3.1 qemu-system-x86 1:3.1+dfsg-2ubuntu3.1 Ubuntu 18.10: qemu 1:2.12+dfsg-3ubuntu8.7 qemu-system-x86 1:2.12+dfsg-3ubuntu8.7 Ubuntu 18.04 LTS: qemu 1:2.11+dfsg-1ubuntu7.13 qemu-system-x86 1:2.11+dfsg-1ubuntu7.13 Ubuntu 16.04 LTS: qemu 1:2.5+dfsg-5ubuntu10.38 qemu-system-x86 1:2.5+dfsg-5ubuntu10.38 Ubuntu 14.04 ESM: qemu 2.0.0+dfsg-2ubuntu1.46 qemu-system-x86 2.0.0+dfsg-2ubuntu1.46 After a standard system update you need to restart all QEMU virtual machines to make all the necessary changes. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202003-56 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: Xen: Multiple vulnerabilities Date: March 25, 2020 Bugs: #686024, #699048, #699996, #702644 ID: 202003-56 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities have been found in Xen, the worst of which could allow for privilege escalation. Background ========== Xen is a bare-metal hypervisor. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-emulation/xen < 4.12.0-r1 >= 4.12.0-r1 2 app-emulation/xen-tools < 4.12.0-r1 >= 4.12.0-r1 ------------------------------------------------------------------- 2 affected packages Description =========== Multiple vulnerabilities have been discovered in Xen. Please review the referenced CVE identifiers for details. Workaround ========== There is no known workaround at this time. Resolution ========== All Xen users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-emulation/xen-4.12.0-r1" References ========== [ 1 ] CVE-2018-12126 https://nvd.nist.gov/vuln/detail/CVE-2018-12126 [ 2 ] CVE-2018-12127 https://nvd.nist.gov/vuln/detail/CVE-2018-12127 [ 3 ] CVE-2018-12130 https://nvd.nist.gov/vuln/detail/CVE-2018-12130 [ 4 ] CVE-2018-12207 https://nvd.nist.gov/vuln/detail/CVE-2018-12207 [ 5 ] CVE-2018-12207 https://nvd.nist.gov/vuln/detail/CVE-2018-12207 [ 6 ] CVE-2019-11091 https://nvd.nist.gov/vuln/detail/CVE-2019-11091 [ 7 ] CVE-2019-11135 https://nvd.nist.gov/vuln/detail/CVE-2019-11135 [ 8 ] CVE-2019-18420 https://nvd.nist.gov/vuln/detail/CVE-2019-18420 [ 9 ] CVE-2019-18421 https://nvd.nist.gov/vuln/detail/CVE-2019-18421 [ 10 ] CVE-2019-18423 https://nvd.nist.gov/vuln/detail/CVE-2019-18423 [ 11 ] CVE-2019-18424 https://nvd.nist.gov/vuln/detail/CVE-2019-18424 [ 12 ] CVE-2019-18425 https://nvd.nist.gov/vuln/detail/CVE-2019-18425 [ 13 ] CVE-2019-19577 https://nvd.nist.gov/vuln/detail/CVE-2019-19577 [ 14 ] CVE-2019-19578 https://nvd.nist.gov/vuln/detail/CVE-2019-19578 [ 15 ] CVE-2019-19580 https://nvd.nist.gov/vuln/detail/CVE-2019-19580 [ 16 ] CVE-2019-19581 https://nvd.nist.gov/vuln/detail/CVE-2019-19581 [ 17 ] CVE-2019-19582 https://nvd.nist.gov/vuln/detail/CVE-2019-19582 [ 18 ] CVE-2019-19583 https://nvd.nist.gov/vuln/detail/CVE-2019-19583 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202003-56 Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org. License ======= Copyright 2020 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.5 . (CVE-2019-11091) 4. Software Description: - linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty Details: USN-3982-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. (CVE-2019-11091) Matteo Croce, Natale Vinto, and Andrea Spagnolo discovered that the cgroups subsystem of the Linux kernel did not properly account for SCTP socket buffers. (CVE-2019-3874) Alex Williamson discovered that the vfio subsystem of the Linux kernel did not properly limit DMA mappings. Please note that fully mitigating the Microarchitectural Data Sampling (MDS) issues (CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, and CVE-2019-11091) requires corresponding processor microcode/firmware updates or, in virtual environments, hypervisor updates

IOT TAXONOMY

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2025-06-19T19:38:53.197000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE