ID

VAR-201801-1711

CVE

CVE-2017-5754

TITLE

CPU hardware utilizing speculative execution may be vulnerable to cache side-channel attacks

DESCRIPTION

Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache. Two vulnerabilities are identified, known as "Variant 3a" and "Variant 4". CPUhardware is a set of firmware that runs in the CPU (Central Processing Unit) for managing and controlling the CPU. The Spectre vulnerability exists in the CPU processor core. Because Intel does not separate low-privileged applications from accessing kernel memory, an attacker can use a malicious application to obtain private data that should be quarantined. Qualcomm Closed-Source Components are prone to multiple unspecified vulnerabilities. An attacker can exploit these issues to perform unauthorized actions. This may aid in further attacks. These issues are being tracked by Android Bug IDs A-78135902, A-66913713, A-67712316, A-79419833, A-109678200, A-78283451, A-78285196, A-78284194, A-78284753, A-78284517, A-78240177, A-78239686, A-78284545, A-109660689, A-78240324, A-68141338, A-78286046, A-73539037, A-73539235, A-71501115, A-33757308, A-74236942, A-77485184, A-77484529, A-33385206, A-79419639, A-79420511, A-109678338, and A-112279564. Intel and ARM CPU chips have an information disclosure vulnerability, which originates from a flaw in the processor data boundary mechanism. The following products and versions are affected: ARM Cortex-A75; Intel Xeon E5-1650 v3, v2, v4; Xeon E3-1265l v2, v3, v4; Xeon E3-1245 v2, v3, v5, v6; Xeon X7542 wait. ========================================================================== Ubuntu Security Notice USN-3525-1 January 10, 2018 linux vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 12.04 ESM Summary: The system could be made to expose sensitive information. This flaw is known as Meltdown. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 ESM: linux-image-3.2.0-132-generic 3.2.0-132.178 linux-image-3.2.0-132-generic-pae 3.2.0-132.178 linux-image-generic 3.2.0.132.146 linux-image-generic-pae 3.2.0.132.146 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. Relevant releases/architectures: RHEL 7-based RHEV-H ELS - noarch RHEV Hypervisor for RHEL-6 ELS - noarch 3. Description: The rhev-hypervisor7 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine (KVM) hypervisor. It includes everything necessary to run and manage virtual machines: A subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent. Details on the vulnerability and our response can be found here: https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SpectreAndMeltdown Due to the high complexity of the fixes, we are unable to livepatch this CVE. Please plan to reboot into kernel version 4.4.0-108.131 or newer as soon as possible. References: CVE-2017-5754 -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce . 6.4) - x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * hw: cpu: speculative execution permission faults handling (CVE-2017-5754) * Kernel: error in exception handling leads to DoS (CVE-2018-8897) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es): * The kernel build requirements have been updated to the GNU Compiler Collection (GCC) compiler version that has the support for Retpolines. The Retpolines mechanism is a software construct that leverages specific knowledge of the underlying hardware to mitigate the branch target injection, also known as Spectre variant 2 vulnerability described in CVE-2017-5715. (BZ#1554251) 4. Relevant releases/architectures: Image Updates for RHV-H - noarch Management Agent for RHEL 7 Hosts - noarch 3. The appliance is available to download as an OVA file from the Customer Portal. Summary VMware Virtual Appliance updates address side-channel analysis due to speculative execution Note: This document will focus on VMware Virtual Appliances which are affected by the known variants of CVE-2017-5753, CVE-2017-5715, and CVE-2017-5754. For more information please see Knowledge Base article 52264. These mitigations are part of the Operating System-Specific Mitigations category described in VMware Knowledge Base article 52245. Relevant Products vCloud Usage Meter (UM) Identity Manager (vIDM) vCenter Server (vCSA) vSphere Data Protection (VDP) vSphere Integrated Containers (VIC) vRealize Automation (vRA) 3. Problem Description VMware Virtual Appliance Mitigations for Bounds-Check bypass, Branch Target Injection, and Rogue data cache load issues CPU data cache timing can be abused to efficiently leak information out of mis-speculated CPU execution, leading to (at worst) arbitrary virtual memory read vulnerabilities across local security boundaries in various contexts. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the identifiers CVE-2017-5753 (Bounds Check bypass), CVE-2017-5715 (Branch Target Injection), CVE-2017-5754 (Rogue data cache load) to these issues. Column 5 of the following table lists the action required to mitigate the observed vulnerability in each release, if a solution is available. VMware Product Running Replace with/ Mitigation/ Product Version on Severity Apply Patch Workaround ========== ========= ======= ========= ============= ========== UM 3.x VA Important Patch Pending KB52467 vIDM 3.x, 2.x VA Important Patch Pending KB52284 vCSA 6.5 VA Important Patch Pending KB52312 vCSA 6.0 VA Important Patch Pending KB52312 vCSA 5.5 VA N/A Unaffected None VDP 6.x VA Important Patch Pending None VIC 1.x VA Important 1.3.1 None vRA 7.x VA Important Patch Pending KB52377 vRA 6.x VA Important Patch Pending KB52497 4. Solution Please review the patch/release notes for your product and version and verify the checksum of your downloaded file. vSphere Integrated Containers 1.3.1 Downloads and Documentation: https://my.vmware.com/group/vmware/get-download?downloadGroup=VIC131 5. Change log 2018-02-08: VMSA-2018-0007 Initial security advisory in conjunction with the release of vSphere Integrated Containers 1.3.1 on 2018-02-08. Contact E-mail list for product security notifications and announcements: http://lists.vmware.com/cgi-bin/mailman/listinfo/security-announce This Security Advisory is posted to the following lists: security-announce@lists.vmware.com bugtraq@securityfocus.com fulldisclosure@seclists.org E-mail: security at vmware.com PGP key at: https://kb.vmware.com/kb/1055 VMware Security Advisories http://www.vmware.com/security/advisories VMware Security Response Policy https://www.vmware.com/support/policies/security_response.html VMware Lifecycle Support Phases https://www.vmware.com/support/policies/lifecycle.html VMware Security & Compliance Blog https://blogs.vmware.com/security Twitter https://twitter.com/VMwareSRC Copyright 2018 VMware Inc. All rights reserved. CVE-2017-5715 Multiple researchers have discovered a vulnerability in various processors supporting speculative execution, enabling an attacker controlling an unprivileged process to read memory from arbitrary addresses, including from the kernel and all other processes running on the system. CVE-2017-5754 Multiple researchers have discovered a vulnerability in Intel processors, enabling an attacker controlling an unprivileged process to read memory from arbitrary addresses, including from the kernel and all other processes running on the system. This specific attack has been named Meltdown and is addressed in the Linux kernel on the powerpc/ppc64el architectures by flushing the L1 data cache on exit from kernel mode to user mode (or from hypervisor to kernel). This works on Power7, Power8 and Power9 processors. CVE-2017-13166 A bug in the 32-bit compatibility layer of the v4l2 IOCTL handling code has been found. Memory protections ensuring user-provided buffers always point to userland memory were disabled, allowing . This bug could be exploited by an attacker to overwrite kernel memory from an unprivileged userland process, leading to privilege escalation. The acpi_smbus_hc_add() prints a kernel address in the kernel log at every boot, which could be used by an attacker on the system to defeat kernel ASLR. Additionnaly to those vulnerability, some mitigations for CVE-2017-5753 are included in this release. CVE-2017-5753 Multiple researchers have discovered a vulnerability in various processors supporting speculative execution, enabling an attacker controlling an unprivileged process to read memory from arbitrary addresses, including from the kernel and all other processes running on the system. This specific attack has been named Spectre variant 1 (bounds-check bypass) and is mitigated in the Linux kernel architecture by identifying vulnerable code sections (array bounds checking followed by array access) and replacing the array access with the speculation-safe array_index_nospec() function. More use sites will be added over time. For the stable distribution (stretch), these problems have been fixed in version 4.9.82-1+deb9u2. For the detailed security status of linux please refer to its security tracker page at: https://security-tracker.debian.org/tracker/linux 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----- iQEzBAEBCgAdFiEE8vi34Qgfo83x35gF3rYcyPpXRFsFAlqO5kYACgkQ3rYcyPpX RFtjkgf9HK7sq/xNOFjZsc3iaVNdzDhDEth8ql/Q9WsbDP9JmlrwmlTsD/QAgXgx m9zIIJzyI9Dry60bVvYZHFrtYhQXX5zp9DYa89oinHv+1UxzaYHTHsNoh326k86n QUcDLYe2+JJgi/2KjLqfFfa5zgMqUNj3C6iBDezs0tCfE/QZAmAX7aA7A3mTJYLB 3v2tSoEeW0fb9M5Ic2QHJD1TW6NU+j6zaUeJRyhj7lthmyOcNxwTIrt2CswDnLUI tCMtzdce6OWAW5xXQxHwzzf5+vRvmm/f+wM2V3WTcA1Q0tfA5cZGFe2SMOhyGKtf KG1ziLYIY0OdCtdxj0K/wEzpe6cikg== =B81o -----END PGP SIGNATURE----- . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security update Advisory ID: RHSA-2018:0021-01 Product: Red Hat Enterprise MRG for RHEL-6 Advisory URL: https://access.redhat.com/errata/RHSA-2018:0021 Issue date: 2018-01-04 ===================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise MRG 2. 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 MRG Realtime for RHEL 6 Server v.2 - noarch, x86_64 3. Description: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update mitigations for x86-64 architecture are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation 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 cross the syscall boundary and read privileged memory by conducting targeted cache side-channel attacks. (CVE-2017-5753, Important) Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation 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 cross the syscall and guest/host boundaries and read privileged memory by conducting targeted cache side-channel attacks. (CVE-2017-5715, Important) Variant CVE-2017-5754 relies on the fact that, on impacted microprocessors, during speculative execution of instruction permission faults, exception generation triggered by a faulting access is suppressed until the retirement of the whole instruction block. In a combination with the fact that memory accesses may populate the cache even when the block is being dropped and never committed (executed), an unprivileged local attacker could use this flaw to read privileged (kernel space) memory by conducting targeted cache side-channel attacks. (CVE-2017-5754, Important) Note: CVE-2017-5754 affects Intel x86-64 microprocessors. AMD x86-64 microprocessors are not affected by this issue. Red Hat would like to thank Google Project Zero for reporting these issues. 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 The system must be rebooted for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1519778 - CVE-2017-5753 hw: cpu: speculative execution bounds-check bypass 1519780 - CVE-2017-5715 hw: cpu: speculative execution branch target injection 1519781 - CVE-2017-5754 hw: cpu: speculative execution permission faults handling 6. Package List: Red Hat MRG Realtime for RHEL 6 Server v.2: Source: kernel-rt-3.10.0-693.11.1.rt56.606.el6rt.src.rpm noarch: kernel-rt-doc-3.10.0-693.11.1.rt56.606.el6rt.noarch.rpm kernel-rt-firmware-3.10.0-693.11.1.rt56.606.el6rt.noarch.rpm x86_64: kernel-rt-3.10.0-693.11.1.rt56.606.el6rt.x86_64.rpm kernel-rt-debug-3.10.0-693.11.1.rt56.606.el6rt.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-693.11.1.rt56.606.el6rt.x86_64.rpm kernel-rt-debug-devel-3.10.0-693.11.1.rt56.606.el6rt.x86_64.rpm kernel-rt-debuginfo-3.10.0-693.11.1.rt56.606.el6rt.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-693.11.1.rt56.606.el6rt.x86_64.rpm kernel-rt-devel-3.10.0-693.11.1.rt56.606.el6rt.x86_64.rpm kernel-rt-trace-3.10.0-693.11.1.rt56.606.el6rt.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-693.11.1.rt56.606.el6rt.x86_64.rpm kernel-rt-trace-devel-3.10.0-693.11.1.rt56.606.el6rt.x86_64.rpm kernel-rt-vanilla-3.10.0-693.11.1.rt56.606.el6rt.x86_64.rpm kernel-rt-vanilla-debuginfo-3.10.0-693.11.1.rt56.606.el6rt.x86_64.rpm kernel-rt-vanilla-devel-3.10.0-693.11.1.rt56.606.el6rt.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/updates/classification/#important https://access.redhat.com/security/vulnerabilities/speculativeexecution https://access.redhat.com/security/cve/CVE-2017-5753 https://access.redhat.com/security/cve/CVE-2017-5715 https://access.redhat.com/security/cve/CVE-2017-5754 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFaTlwmXlSAg2UNWIIRAik7AJ9j7Fc3tAhJID7j6/VwlTD7m7O2xQCgrdR3 x8yKxwqpna4asPWoiFmjCJc= =NF5U -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . Background ========== Xen is a bare-metal hypervisor. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-emulation/xen < 4.10.1-r2 >= 4.10.1-r2 2 app-emulation/xen-tools < 4.10.1-r2 >= 4.10.1-r2 ------------------------------------------------------------------- 2 affected packages Description =========== Multiple vulnerabilities have been discovered in Xen. Please review the referenced CVE identifiers for details. Impact ====== A local attacker could cause a Denial of Service condition or disclose sensitive information. 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-4.10.1-r2" All Xen tools users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot -v ">=app-emulation/xen-tools-4.10.1-r2" References ========== [ 1 ] CVE-2017-5715 https://nvd.nist.gov/vuln/detail/CVE-2017-5715 [ 2 ] CVE-2017-5753 https://nvd.nist.gov/vuln/detail/CVE-2017-5753 [ 3 ] CVE-2017-5754 https://nvd.nist.gov/vuln/detail/CVE-2017-5754 [ 4 ] CVE-2018-10471 https://nvd.nist.gov/vuln/detail/CVE-2018-10471 [ 5 ] CVE-2018-10472 https://nvd.nist.gov/vuln/detail/CVE-2018-10472 [ 6 ] CVE-2018-10981 https://nvd.nist.gov/vuln/detail/CVE-2018-10981 [ 7 ] CVE-2018-10982 https://nvd.nist.gov/vuln/detail/CVE-2018-10982 [ 8 ] CVE-2018-12891 https://nvd.nist.gov/vuln/detail/CVE-2018-12891 [ 9 ] CVE-2018-12892 https://nvd.nist.gov/vuln/detail/CVE-2018-12892 [ 10 ] CVE-2018-12893 https://nvd.nist.gov/vuln/detail/CVE-2018-12893 [ 11 ] CVE-2018-15468 https://nvd.nist.gov/vuln/detail/CVE-2018-15468 [ 12 ] CVE-2018-15469 https://nvd.nist.gov/vuln/detail/CVE-2018-15469 [ 13 ] CVE-2018-15470 https://nvd.nist.gov/vuln/detail/CVE-2018-15470 [ 14 ] CVE-2018-3620 https://nvd.nist.gov/vuln/detail/CVE-2018-3620 [ 15 ] CVE-2018-3646 https://nvd.nist.gov/vuln/detail/CVE-2018-3646 [ 16 ] CVE-2018-5244 https://nvd.nist.gov/vuln/detail/CVE-2018-5244 [ 17 ] CVE-2018-7540 https://nvd.nist.gov/vuln/detail/CVE-2018-7540 [ 18 ] CVE-2018-7541 https://nvd.nist.gov/vuln/detail/CVE-2018-7541 [ 19 ] CVE-2018-7542 https://nvd.nist.gov/vuln/detail/CVE-2018-7542 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201810-06 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 2018 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 . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Note: the current version of the following document is available here: https://softwaresupport.hpe.com/document/-/facetsearch/document/KM03158629 SUPPORT COMMUNICATION - SECURITY BULLETIN Document ID: KM03158629 Version: 2 MFSBGN03802 - Virtualization Performance Viewer (vPV) / Cloud Optimizer, Local Disclosure of Information NOTICE: The information in this Security Bulletin should be acted upon as soon as possible. Release Date: 2018-05-11 Last Updated: 2018-05-10 Potential Security Impact: Local: Disclosure of Information Source: Micro Focus, Product Security Response Team VULNERABILITY SUMMARY A potential vulnerability has been identified in 3rd party component used by Micro Focus Virtualization Performance Viewer (vPV) / Cloud Optimizer Virtual Appliance. The vulnerability could be exploited to Local Disclosure of Information. References: - CVE-2017-5753 - CVE-2017-5715 - CVE-2017-5754 SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed. - HP Virtualization Performance Viewer Software - v2.20, v3.0, v3.01, v3.02, v3.03 - HPE Cloud Optimizer - v2.20, v3.0, v3.01, v3.02, v3.03 BACKGROUND CVSS Base Metrics ================= Reference, CVSS V3 Score/Vector, CVSS V2 Score/Vector RESOLUTION Micro Focus is actively working with its vendors to address any systems-level Spectre and Meltdown impacts.However, if you have immediate concerns or questions regarding CentOS and its approach to Spectre or Meltdown, please contact them directly. HISTORY Version:1 (rev.1) - 12 April 2018 Initial release Version:2 (rev.2) - 10 May 2018 Vulnerability Summary Third Party Security Patches: Third party security patches that are to be installed on systems running Micro Focus products should be applied in accordance with the customer's patch management policy. Support: For issues about implementing the recommendations of this Security Bulletin, contact normal Micro Focus services support channel. For other issues about the content of this Security Bulletin, send e-mail to cyber-psrt@microfocus.com. Report: To report a potential security vulnerability for any supported product: Web form: https://www.microfocus.com/support-and-services/report-security Email: security@microfocus.com Subscribe: To initiate receiving subscriptions for future Micro Focus Security Bulletin alerts via Email, please subscribe here - https://softwaresupport.hpe.com/group/softwaresupport/email-notification/-/subscriptions/registerdocumentnotification Once you are logged in to the portal, please choose security bulletins under product and document types. Please note that you will need to sign in using a Passport account. If you do not have a Passport account yet, you can create one- its free and easy https://cf.passport.softwaregrp.com/hppcf/createuser.do Security Bulletin Archive: A list of recently released Security Bulletins is available here: https://softwaresupport.hpe.com/security-vulnerability Software Product Category: The Software Product Category is represented in the title by the two characters following Micro Focus Security Bulletin. 3P = 3rd Party Software GN = Micro Focus General Software MU = Multi-Platform Software System management and security procedures must be reviewed frequently to maintain system integrity. Micro Focus is continually reviewing and enhancing the security features of software products to provide customers with current secure solutions. "Micro Focus is broadly distributing this Security Bulletin in order to bring to the attention of users of the affected Micro Focus products the important security information contained in this Bulletin. Micro Focus recommends that all users determine the applicability of this information to their individual situations and take appropriate action. Micro Focus does not warrant that this information is necessarily accurate or complete for all user situations and, consequently, Micro Focus will not be responsible for any damages resulting from user's use or disregard of the information provided in this Security Bulletin. To the extent permitted by law, Micro Focus disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose, title and non-infringement." Copyright 2017 EntIT Software LLC Micro Focus shall not be liable for technical or editorial errors or omissions contained herein. The information provided is provided "as is" without warranty of any kind. To the extent permitted by law, neither Micro Focus nor its affiliates, subcontractors or suppliers will be liable for incidental, special or consequential damages including downtime cost; lost profits; damages relating to the procurement of substitute products or services; or damages for loss of data, or software restoration. The information in this document is subject to change without notice. Micro Focus and the names of Micro Focus products referenced herein are trademarks of Micro Focus in the United States and other countries. Other product and company names mentioned herein may be trademarks of their respective owners

IOT TAXONOMY

AFFECTED PRODUCTS