ID

VAR-201905-1248

CVE

CVE-2019-11091

TITLE

Multiple Intel Product Information Disclosure Vulnerabilities (CNVD-2019-22234)

DESCRIPTION

Microarchitectural Data Sampling Uncacheable Memory (MDSUM): 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. 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. The vulnerability is due to improper memory operations that could expose a side channel on the affected system. A successful exploit could be used to conduct further attacks. Proof-of-concept (PoC) code that demonstrates an exploit of this vulnerability is publicly available. A third-party patch is also available. 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. 8) - aarch64, noarch, ppc64le, s390x, x86_64 3. Description: Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. (CVE-2019-11091) * QEMU: device_tree: heap buffer overflow while loading device tree blob (CVE-2018-20815) * libssh2: Integer overflow in transport read resulting in out of bounds write (CVE-2019-3855) * libssh2: Integer overflow in keyboard interactive handling resulting in out of bounds write (CVE-2019-3856) * libssh2: Integer overflow in SSH packet processing channel resulting in out of bounds write (CVE-2019-3857) * libssh2: Integer overflow in user authenticate keyboard interactive allows out-of-bounds writes (CVE-2019-3863) 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. 7.2) - noarch, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Bug Fix(es): * rwsem in inconsistent state leading system to hung (BZ#1690318) 4. 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. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: libvirt security update Advisory ID: RHSA-2019:1186-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:1186 Issue date: 2019-05-14 CVE Names: CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091 ===================================================================== 1. Summary: An update for libvirt is now available for Red Hat Enterprise Linux 7.2 Advanced Update Support, Red Hat Enterprise Linux 7.2 Telco Extended Update Support, and Red Hat Enterprise Linux 7.2 Update Services for SAP Solutions. 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. 7.2) - x86_64 Red Hat Enterprise Linux Server E4S (v. 7.2) - x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 7.2) - x86_64 Red Hat Enterprise Linux Server Optional E4S (v. 7.2) - x86_64 Red Hat Enterprise Linux Server Optional TUS (v. 7.2) - x86_64 Red Hat Enterprise Linux Server TUS (v. 7.2) - 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): * 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 the updated packages, libvirtd will be restarted automatically. 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 Server AUS (v. 7.2): Source: libvirt-1.2.17-13.el7_2.10.src.rpm x86_64: libvirt-1.2.17-13.el7_2.10.x86_64.rpm libvirt-client-1.2.17-13.el7_2.10.i686.rpm libvirt-client-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-config-network-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-config-nwfilter-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-interface-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-lxc-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-network-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-nodedev-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-nwfilter-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-qemu-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-secret-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-storage-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-kvm-1.2.17-13.el7_2.10.x86_64.rpm libvirt-debuginfo-1.2.17-13.el7_2.10.i686.rpm libvirt-debuginfo-1.2.17-13.el7_2.10.x86_64.rpm libvirt-devel-1.2.17-13.el7_2.10.i686.rpm libvirt-devel-1.2.17-13.el7_2.10.x86_64.rpm libvirt-docs-1.2.17-13.el7_2.10.x86_64.rpm Red Hat Enterprise Linux Server E4S (v. 7.2): Source: libvirt-1.2.17-13.el7_2.10.src.rpm x86_64: libvirt-1.2.17-13.el7_2.10.x86_64.rpm libvirt-client-1.2.17-13.el7_2.10.i686.rpm libvirt-client-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-config-network-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-config-nwfilter-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-interface-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-lxc-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-network-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-nodedev-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-nwfilter-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-qemu-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-secret-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-storage-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-kvm-1.2.17-13.el7_2.10.x86_64.rpm libvirt-debuginfo-1.2.17-13.el7_2.10.i686.rpm libvirt-debuginfo-1.2.17-13.el7_2.10.x86_64.rpm libvirt-devel-1.2.17-13.el7_2.10.i686.rpm libvirt-devel-1.2.17-13.el7_2.10.x86_64.rpm libvirt-docs-1.2.17-13.el7_2.10.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 7.2): Source: libvirt-1.2.17-13.el7_2.10.src.rpm x86_64: libvirt-1.2.17-13.el7_2.10.x86_64.rpm libvirt-client-1.2.17-13.el7_2.10.i686.rpm libvirt-client-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-config-network-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-config-nwfilter-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-interface-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-lxc-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-network-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-nodedev-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-nwfilter-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-qemu-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-secret-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-driver-storage-1.2.17-13.el7_2.10.x86_64.rpm libvirt-daemon-kvm-1.2.17-13.el7_2.10.x86_64.rpm libvirt-debuginfo-1.2.17-13.el7_2.10.i686.rpm libvirt-debuginfo-1.2.17-13.el7_2.10.x86_64.rpm libvirt-devel-1.2.17-13.el7_2.10.i686.rpm libvirt-devel-1.2.17-13.el7_2.10.x86_64.rpm libvirt-docs-1.2.17-13.el7_2.10.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 7.2): x86_64: libvirt-daemon-lxc-1.2.17-13.el7_2.10.x86_64.rpm libvirt-debuginfo-1.2.17-13.el7_2.10.x86_64.rpm libvirt-lock-sanlock-1.2.17-13.el7_2.10.x86_64.rpm libvirt-login-shell-1.2.17-13.el7_2.10.x86_64.rpm Red Hat Enterprise Linux Server Optional E4S (v. 7.2): x86_64: libvirt-daemon-lxc-1.2.17-13.el7_2.10.x86_64.rpm libvirt-debuginfo-1.2.17-13.el7_2.10.x86_64.rpm libvirt-lock-sanlock-1.2.17-13.el7_2.10.x86_64.rpm libvirt-login-shell-1.2.17-13.el7_2.10.x86_64.rpm Red Hat Enterprise Linux Server Optional TUS (v. 7.2): x86_64: libvirt-daemon-lxc-1.2.17-13.el7_2.10.x86_64.rpm libvirt-debuginfo-1.2.17-13.el7_2.10.x86_64.rpm libvirt-lock-sanlock-1.2.17-13.el7_2.10.x86_64.rpm libvirt-login-shell-1.2.17-13.el7_2.10.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 iQIVAwUBXNspY9zjgjWX9erEAQhYSQ/+IUAyZl0LnpfmMs2b4cWyhab2xcuwg0vH vwW0ba3+TmjGHt+fwMEAaA4/sSnEbquIbJbCu8fx4KHz3Z9bS+Bz203+EYoAkX6W 47MphBHQYJSRKXk2J1IYNMFRD/zCuAXMU5C0wZ2M8a28TTVEXh7qnz1iPbvQsc2U vDEptwBjGTuqtYg7c4n2Q0wEIrlOx9cWrBPupbVYvTLQEjXD1HNTdKd76p2xvV43 p2uP0rrEypU8Isq44/3l9jkZipjx6AoVAxdTaCJ1hpXTNb8UblnGiDTY03kdAdvH ALSG99xmBSOymJ0XMw0t4I0LVhKRcdM/Z+xvIKhfu2TTJzCC5yFWIVYXISDGTbJj vz8M3KfcFwZF+PZZTurd1koLRTvw99l9vtNxwOEyoFaCueOEjW3nd4q8RZKdvpbV 4ZidTKtbRTNGpAZ2mz7O5EIDBB0N6g23bU5BW8Mzc5jeyJBpMJb+qPXhKXh4iMmi 5ySGrAeuUoOMR7Aa+S5dq6o7lu8wiMhiYlrxQjNLH1iCN6geHi7iiCMuR6PN+Hn2 tprWi2lNFlSgf2VFTewiy7cJYMJ8P5O77TpSfWJasxN+MD+bjt4Oc0ywTCA32m1a Gsk+5KntQlVDT1QbuJWvV/02/+khz7Oxq3yIDWlJePrRRufknyOJXTADDcsiUAG7 LXhfb/N/qQY= =W0lI -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . Once all virtual machines have shut down, start them again for this update to take effect. ========================================================================== Ubuntu Security Notice USN-3982-2 May 14, 2019 linux-lts-xenial vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 14.04 ESM Summary: Several security issues were fixed in the Linux kernel. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 for Ubuntu 14.04 LTS. 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) 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) Matteo Croce, Natale Vinto, and Andrea Spagnolo discovered that the cgroups subsystem of the Linux kernel did not properly account for SCTP socket buffers. A local attacker could use this to cause a denial of service (system crash). (CVE-2019-3874) Alex Williamson discovered that the vfio subsystem of the Linux kernel did not properly limit DMA mappings. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-3882) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 ESM: linux-image-4.4.0-148-generic 4.4.0-148.174~14.04.1 linux-image-4.4.0-148-generic-lpae 4.4.0-148.174~14.04.1 linux-image-4.4.0-148-lowlatency 4.4.0-148.174~14.04.1 linux-image-4.4.0-148-powerpc-e500mc 4.4.0-148.174~14.04.1 linux-image-4.4.0-148-powerpc-smp 4.4.0-148.174~14.04.1 linux-image-4.4.0-148-powerpc64-emb 4.4.0-148.174~14.04.1 linux-image-4.4.0-148-powerpc64-smp 4.4.0-148.174~14.04.1 linux-image-generic-lpae-lts-xenial 4.4.0.148.130 linux-image-generic-lts-xenial 4.4.0.148.130 linux-image-lowlatency-lts-xenial 4.4.0.148.130 linux-image-powerpc-e500mc-lts-xenial 4.4.0.148.130 linux-image-powerpc-smp-lts-xenial 4.4.0.148.130 linux-image-powerpc64-emb-lts-xenial 4.4.0.148.130 linux-image-powerpc64-smp-lts-xenial 4.4.0.148.130 linux-image-virtual-lts-xenial 4.4.0.148.130 After a standard system update you need to reboot your computer to make all the necessary changes. 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. It provides mitigations for the MSBDS, MFBDS, MLPDS and MDSUM hardware vulnerabilities. To fully resolve these vulnerabilities it is also necessary to update the Linux kernel packages as released in DSA 4444. For the stable distribution (stretch), these problems have been fixed in version 3.20190514.1~deb9u1. We recommend that you upgrade your intel-microcode packages. For the detailed security status of intel-microcode please refer to its security tracker page at: https://security-tracker.debian.org/tracker/intel-microcode 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----- iQIzBAEBCgAdFiEEtuYvPRKsOElcDakFEMKTtsN8TjYFAlzb2WsACgkQEMKTtsN8 TjZ+PBAAqVaw+/6ZsLEwj4aPlI0XrDP1MEWLHSFyOpOluNKaHSfCR1MopjdmSykT 91es+HCLISwbpuhPy8a+rPEZnSwnQczuXJITMVnW0Z9noUvTf/BnN/dAdwTa8Ka8 DkhBnvmc5gOkdcG7il+PaI1byZ5/6S+znqhDiN4VSZg3h1LhJMk9h9kUjQS+W6uC qA4JGdJsqeQShngE8njGetwCaf29+e2OQ3RfuDp+6XgsQln2ZOi7r69Bj5VmH5jB yYzMMp8n0jMKelzqP9HtniL/P/75foDhQrP95k8gFaeRaLTEIb0NNLP1JpiaVKtn +c+1yMN6R7JG86AOlNOq/xUHv3pkuP9i2PBEga/956nQZf9g9/5tc6/K0dgHl4Yx zn1SKQrKdXVqtvYx6boh3cPqoJ99W32GijQHr2N8ezjdmW7SHMGtpnSVO88nDbH4 JVdxVhtY4JCsDJxYIwb6T4p3TSGIzN0T7y5/YqItqObmblLpg8jASWNkrepH3jqY a9swwMelQTsop5LFTwgYbTznXSEE+AorFTc+hOvScR4ZSr8kPVK/nf/m+h5Zj68B Lx/nnOQZFYySrNBKMfMLCXmrmMWP3ZavMiiEJL4GbWfNFAEJH4P+2UwsjwyEVW3h NrRAdm0MqsY86tHBWmDGhNMYjShKm/vG5mMpWg5r3AG3IhG1x/U= =PWZK -----END PGP SIGNATURE-----

IOT TAXONOMY

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

TYPE

information disclosure

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2026-08-28T22:07:54.711000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE