ID

VAR-201805-0963

CVE

CVE-2018-3639

TITLE

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

DESCRIPTION

Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB), Variant 4. CPU hardware utilizing speculative execution may be vulnerable to cache timing side-channel analysis. Two vulnerabilities are identified, known as "Variant 3a" and "Variant 4". CPUhardware is firmware that runs in the central processor for managing and controlling the CPU. Multiple CPUHardware information disclosure vulnerabilities. The vulnerability is caused by a race condition in the CPU cache processing. Local attackers can exploit vulnerabilities to obtain sensitive information through side channel analysis. AMD, ARM, and Intel CPUs are all CPU (central processing unit) products from different manufacturers. AMD, ARM, and Intel CPUs have security vulnerabilities. For the stable distribution (stretch), these problems have been fixed in version 3.20180703.2~deb9u1. We recommend that you upgrade your intel-microcode packages. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: qemu-kvm security update Advisory ID: RHSA-2018:1656-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:1656 Issue date: 2018-05-21 CVE Names: CVE-2018-3639 ===================================================================== 1. Summary: An update for qemu-kvm 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: 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): * 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) Note: This is the qemu-kvm side of the CVE-2018-3639 mitigation. 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/): 1566890 - CVE-2018-3639 hw: cpu: speculative store bypass 6. Package List: Red Hat Enterprise Linux Server AUS (v. 6.4): Source: qemu-kvm-0.12.1.2-2.355.el6_4.11.src.rpm x86_64: qemu-guest-agent-0.12.1.2-2.355.el6_4.11.x86_64.rpm qemu-img-0.12.1.2-2.355.el6_4.11.x86_64.rpm qemu-kvm-0.12.1.2-2.355.el6_4.11.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.355.el6_4.11.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.355.el6_4.11.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 6.4): x86_64: qemu-guest-agent-win32-0.12.1.2-2.355.el6_4.11.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.355.el6_4.11.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. 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 iQIVAwUBWwQw/NzjgjWX9erEAQibHhAAnQB3w7HZPsbJL4CZmQ6RiV2jFetYREs4 3uKesj4cIVIg5J1LtGU7sr8HW6dObPGoaqUcTtufUJRGYeQ0K70HJBdnQp7uzG7E 8xR4IjPcYYlPXQKTkFSVRhSi70UMljLMrNKkSK0bx5SSTr6n9EDbgJ2NqqIUa/Se ltBHixPaMZsGF039djGCmTaeqzApL54KxbRS7ypC5FI2nM6CmGNpSTzL7g30lgVu ryb4IrmG6OeujXA6WYMRjR7/ELfZ/APQFBnZwY4SnBlO544mu6WT7dh2fqnOqZy4 7vfXvhw/S7BqhBW+YTh9dp+KKXaeU/GhIrdTtJ7G5eF2QC0wZp1NxHhq7CMN/ROE sj12U4EEZwn0/J+/DZu8eoXsDu8vA1u4JYr0fhDKlnGL1grkfHyzS83isTrelPkr Rug5Efss9YNrUlPJIjcvPRmGOBEwHev73PYGRbEq/T0BeLKK9w3aXJX35hfoSaCU yNCkR06oH4q8mvK1kIvwOdkZOiPhezYDz91PsCZ9W7TO0meOyb1OVSL3z5KfsnhT 95g3HETNqfAkzO4kh/CG63mlkdWpwU1r4+SnzV88iZcqZIR8d47Iy/2SwZhISIzu 0b3T1Jh1Tp3TlhX86gJa0GpzlpAz3Hs0vuULuSnQz02K7B6V56R/rRe+1IsqZR3H QDFk7cwzswg= =J81W -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 APPLE-SA-2018-10-30-9 Additional information for APPLE-SA-2018-9-24-1 macOS Mojave 10.14 macOS Mojave 10.14 addresses the following: Bluetooth Available for: iMac (21.5-inch, Late 2012), iMac (27-inch, Late 2012) , iMac (21.5-inch, Late 2013), iMac (21.5-inch, Mid 2014), iMac (Retina 5K, 27-inch, Late 2014), iMac (21.5-inch, Late 2015), Mac mini (Mid 2011), Mac mini Server (Mid 2011), Mac mini (Late 2012) , Mac mini Server (Late 2012), Mac mini (Late 2014), Mac Pro (Late 2013), MacBook Air (11-inch, Mid 2011), MacBook Air (13-inch, Mid 2011), MacBook Air (11-inch, Mid 2012), MacBook Air (13-inch, Mid 2012), MacBook Air (11-inch, Mid 2013), MacBook Air (13-inch, Mid 2013), MacBook Air (11-inch, Early 2015), MacBook Air (13-inch, Early 2015), MacBook Pro (13-inch, Mid 2012), MacBook Pro (15-inch, Mid 2012), MacBook Pro (Retina, 13-inch, Early 2013), MacBook Pro (Retina, 15-inch, Early 2013), MacBook Pro (Retina, 13-inch, Late 2013), and MacBook Pro (Retina, 15-inch, Late 2013) Impact: An attacker in a privileged network position may be able to intercept Bluetooth traffic Description: An input validation issue existed in Bluetooth. This issue was addressed with improved input validation. CVE-2018-5383: Lior Neumann and Eli Biham The updates below are available for these Mac models: MacBook (Early 2015 and later), MacBook Air (Mid 2012 and later), MacBook Pro (Mid 2012 and later), Mac mini (Late 2012 and later), iMac (Late 2012 and later), iMac Pro (all models), Mac Pro (Late 2013, Mid 2010, and Mid 2012 models with recommended Metal-capable graphics processor, including MSI Gaming Radeon RX 560 and Sapphire Radeon PULSE RX 580) afpserver Impact: A remote attacker may be able to attack AFP servers through HTTP clients Description: An input validation issue was addressed with improved input validation. CVE-2018-4295: Jianjun Chen (@whucjj) from Tsinghua University and UC Berkeley Entry added October 30, 2018 App Store Impact: A malicious application may be able to determine the Apple ID of the owner of the computer Description: A permissions issue existed in the handling of the Apple ID. This issue was addressed with improved access controls. CVE-2018-4324: Sergii Kryvoblotskyi of MacPaw Inc. AppleGraphicsControl Impact: An application may be able to read restricted memory Description: A validation issue was addressed with improved input sanitization. CVE-2018-4417: Lee of the Information Security Lab Yonsei University working with Trend Micro's Zero Day Initiative Entry added October 30, 2018 Application Firewall Impact: A sandboxed process may be able to circumvent sandbox restrictions Description: A configuration issue was addressed with additional restrictions. CVE-2018-4353: Abhinav Bansal of LinkedIn Inc. APR Impact: Multiple buffer overflow issues existed in Perl Description: Multiple issues in Perl were addressed with improved memory handling. CVE-2017-12613: Craig Young of Tripwire VERT CVE-2017-12618: Craig Young of Tripwire VERT Entry added October 30, 2018 ATS Impact: A malicious application may be able to elevate privileges Description: A memory corruption issue was addressed with improved input validation. CVE-2018-4411: lilang wu moony Li of Trend Micro working with Trend Micro's Zero Day Initiative Entry added October 30, 2018 ATS Impact: An application may be able to read restricted memory Description: An out-of-bounds read was addressed with improved bounds checking. CVE-2018-4308: Mohamed Ghannam (@_simo36) Entry added October 30, 2018 Auto Unlock Impact: A malicious application may be able to access local users AppleIDs Description: A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement. CVE-2018-4321: Min (Spark) Zheng, Xiaolong Bai of Alibaba Inc. CFNetwork Impact: An application may be able to execute arbitrary code with system privileges Description: A memory corruption issue was addressed with improved memory handling. CVE-2018-4126: Bruno Keith (@bkth_) working with Trend Micro's Zero Day Initiative Entry added October 30, 2018 CoreFoundation Impact: A malicious application may be able to elevate privileges Description: A memory corruption issue was addressed with improved input validation. CVE-2018-4412: The UK's National Cyber Security Centre (NCSC) Entry added October 30, 2018 CoreFoundation Impact: An application may be able to gain elevated privileges Description: A memory corruption issue was addressed with improved input validation. CVE-2018-4414: The UK's National Cyber Security Centre (NCSC) Entry added October 30, 2018 CoreText Impact: Processing a maliciously crafted text file may lead to arbitrary code execution Description: A use after free issue was addressed with improved memory management. CVE-2018-4347: an anonymous researcher Entry added October 30, 2018 Crash Reporter Impact: An application may be able to read restricted memory Description: A validation issue was addressed with improved input sanitization. CVE-2018-4333: Brandon Azad CUPS Impact: In certain configurations, a remote attacker may be able to replace the message content from the print server with arbitrary content Description: An injection issue was addressed with improved validation. CVE-2018-4153: Michael Hanselmann of hansmi.ch Entry added October 30, 2018 CUPS Impact: An attacker in a privileged position may be able to perform a denial of service attack Description: A denial of service issue was addressed with improved validation. CVE-2018-4406: Michael Hanselmann of hansmi.ch Entry added October 30, 2018 Dictionary Impact: Parsing a maliciously crafted dictionary file may lead to disclosure of user information Description: A validation issue existed which allowed local file access. This was addressed with input sanitization. CVE-2018-4346: Wojciech ReguAa (@_r3ggi) of SecuRing Entry added October 30, 2018 Grand Central Dispatch Impact: An application may be able to execute arbitrary code with system privileges Description: A memory corruption issue was addressed with improved memory handling. CVE-2018-4426: Brandon Azad Entry added October 30, 2018 Heimdal Impact: An application may be able to execute arbitrary code with system privileges Description: A memory corruption issue was addressed with improved memory handling. CVE-2018-3646: Baris Kasikci, Daniel Genkin, Ofir Weisse, and Thomas F. Wenisch of University of Michigan, Mark Silberstein and Marina Minkin of Technion, Raoul Strackx, Jo Van Bulck, and Frank Piessens of KU Leuven, Rodrigo Branco, Henrique Kawakami, Ke Sun, and Kekai Hu of Intel Corporation, Yuval Yarom of The University of Adelaide Entry added October 30, 2018 iBooks Impact: Parsing a maliciously crafted iBooks file may lead to disclosure of user information Description: A configuration issue was addressed with additional restrictions. CVE-2018-4355: evi1m0 of bilibili security team Entry added October 30, 2018 Intel Graphics Driver Impact: An application may be able to read restricted memory Description: A validation issue was addressed with improved input sanitization. CVE-2018-4396: Yu Wang of Didi Research America CVE-2018-4418: Yu Wang of Didi Research America Entry added October 30, 2018 Intel Graphics Driver Impact: An application may be able to read restricted memory Description: A memory initialization issue was addressed with improved memory handling. CVE-2018-4351: Appology Team @ Theori working with Trend Micro's Zero Day Initiative Entry added October 30, 2018 Intel Graphics Driver Impact: An application may be able to execute arbitrary code with system privileges Description: A memory corruption issue was addressed with improved input validation. CVE-2018-4350: Yu Wang of Didi Research America Entry added October 30, 2018 Intel Graphics Driver Impact: An application may be able to execute arbitrary code with system privileges Description: A memory corruption issue was addressed with improved memory handling. CVE-2018-4334: Ian Beer of Google Project Zero Entry added October 30, 2018 IOHIDFamily Impact: A malicious application may be able to execute arbitrary code with kernel privileges Description: A memory corruption issue was addressed with improved input validation CVE-2018-4408: Ian Beer of Google Project Zero Entry added October 30, 2018 IOKit Impact: A malicious application may be able to break out of its sandbox Description: A memory corruption issue was addressed with improved memory handling. CVE-2018-4341: Ian Beer of Google Project Zero CVE-2018-4354: Ian Beer of Google Project Zero Entry added October 30, 2018 IOKit Impact: An application may be able to execute arbitrary code with kernel privileges Description: A memory corruption issue was addressed with improved state management. CVE-2018-4383: Apple Entry added October 30, 2018 IOUserEthernet Impact: An application may be able to execute arbitrary code with kernel privileges Description: A memory corruption issue was addressed with improved memory handling. CVE-2018-4401: Apple Entry added October 30, 2018 Kernel Impact: A malicious application may be able to leak sensitive user information Description: An access issue existed with privileged API calls. This issue was addressed with additional restrictions. CVE-2018-4399: Fabiano Anemone (@anoane) Entry added October 30, 2018 Kernel Impact: An attacker in a privileged network position may be able to execute arbitrary code Description: A memory corruption issue was addressed with improved validation. CVE-2018-4407: Kevin Backhouse of Semmle Ltd. Entry added October 30, 2018 Kernel Impact: An application may be able to execute arbitrary code with kernel privileges Description: A memory corruption issue was addressed with improved memory handling. CVE-2018-4336: Brandon Azad CVE-2018-4337: Ian Beer of Google Project Zero CVE-2018-4340: Mohamed Ghannam (@_simo36) CVE-2018-4344: The UK's National Cyber Security Centre (NCSC) CVE-2018-4425: cc working with Trend Micro's Zero Day Initiative, Juwei Lin (@panicaII) of Trend Micro working with Trend Micro's Zero Day Initiative Entry added October 30, 2018 LibreSSL Impact: Multiple issues in libressl were addressed in this update Description: Multiple issues were addressed by updating to libressl version 2.6.4. CVE-2015-3194 CVE-2015-5333 CVE-2015-5334 CVE-2016-702 Entry added October 30, 2018 Login Window Impact: A local user may be able to cause a denial of service Description: A validation issue was addressed with improved logic. CVE-2018-4348: Ken Gannon of MWR InfoSecurity and Christian Demko of MWR InfoSecurity Entry added October 30, 2018 mDNSOffloadUserClient Impact: An application may be able to execute arbitrary code with kernel privileges Description: A memory corruption issue was addressed with improved memory handling. CVE-2018-4326: an anonymous researcher working with Trend Micro's Zero Day Initiative, Zhuo Liang of Qihoo 360 Nirvan Team Entry added October 30, 2018 MediaRemote Impact: A sandboxed process may be able to circumvent sandbox restrictions Description: An access issue was addressed with additional sandbox restrictions. This ensures that older data read from recently-written-to addresses cannot be read via a speculative side-channel. CVE-2018-3639: Jann Horn (@tehjh) of Google Project Zero (GPZ), Ken Johnson of the Microsoft Security Response Center (MSRC) Entry added October 30, 2018 Security Impact: A local user may be able to cause a denial of service Description: This issue was addressed with improved checks. CVE-2018-4395: Patrick Wardle of Digita Security Entry added October 30, 2018 Security Impact: An attacker may be able to exploit weaknesses in the RC4 cryptographic algorithm Description: This issue was addressed by removing RC4. CVE-2016-1777: Pepi Zawodsky Spotlight Impact: An application may be able to execute arbitrary code with system privileges Description: A memory corruption issue was addressed with improved memory handling. CVE-2018-4393: Lufeng Li Entry added October 30, 2018 Symptom Framework Impact: An application may be able to read restricted memory Description: An out-of-bounds read was addressed with improved bounds checking. CVE-2018-4203: Bruno Keith (@bkth_) working with Trend Micro's Zero Day Initiative Entry added October 30, 2018 Text Impact: Processing a maliciously crafted text file may lead to a denial of service Description: A denial of service issue was addressed with improved validation. CVE-2018-4304: jianan.huang (@Sevck) Entry added October 30, 2018 Wi-Fi Impact: An application may be able to read restricted memory Description: A validation issue was addressed with improved input sanitization. CVE-2018-4338: Lee @ SECLAB, Yonsei University working with Trend Micro's Zero Day Initiative Entry added October 30, 2018 Additional recognition Accessibility Framework We would like to acknowledge Ryan Govostes for their assistance. Core Data We would like to acknowledge Andreas Kurtz (@aykay) of NESO Security Labs GmbH for their assistance. CoreDAV We would like to acknowledge an anonymous researcher for their assistance. CoreGraphics We would like to acknowledge Nitin Arya of Roblox Corporation for their assistance. CoreSymbolication We would like to acknowledge Brandon Azad for their assistance. IOUSBHostFamily We would like to acknowledge an anonymous researcher for their assistance. Kernel We would like to acknowledge Brandon Azad for their assistance. Mail We would like to acknowledge Alessandro Avagliano of Rocket Internet SE, John Whitehead of The New York Times, Kelvin Delbarre of Omicron Software Systems, and Zbyszek A>>A3Akiewski for their assistance. Quick Look We would like to acknowledge Wojciech ReguAa (@_r3ggi) of SecuRing and Patrick Wardle of Digita Security and lokihardt of Google Project Zero for their assistance. Security We would like to acknowledge Christoph Sinai, Daniel Dudek (@dannysapples) of The Irish Times and Filip KlubiAka (@lemoncloak) of ADAPT Centre, Dublin Institute of Technology, Istvan Csanady of Shapr3D, Omar Barkawi of ITG Software, Inc., Phil Caleno, Wilson Ding, and an anonymous researcher for their assistance. SQLite We would like to acknowledge Andreas Kurtz (@aykay) of NESO Security Labs GmbH for their assistance. Terminal We would like to acknowledge an anonymous researcher for their assistance. WindowServer We would like to acknowledge Patrick Wardle of Digita Security for their assistance. Installation note: macOS Mojave 10.14 may be obtained from the Mac App Store or Apple's Software Downloads web site: https://support.apple.com/downloads/ Information will also be posted to the Apple Security Updates web site: https://support.apple.com/kb/HT201222 This message is signed with Apple's Product Security PGP key, and details are available at: https://www.apple.com/support/security/pgp/ -----BEGIN PGP SIGNATURE----- iQJdBAEBCABHFiEEDNXJVNCJJEAVmJdZeC9tht7TK3EFAlvYkgYpHHByb2R1Y3Qt c2VjdXJpdHktbm9yZXBseUBsaXN0cy5hcHBsZS5jb20ACgkQeC9tht7TK3GrtxAA iVBcAdusz88zFzkT05EIxb9nSp4CGOlhKlChK4N7Db17o2fNT0hNpQixEAC0wC/A zqIzsXEzZlPobI4OnwiEVs7lVBsvCW+IarrRZ8pgSllKs1VlbNfOO3z9vB5BqJMr d9PjPvtHyG3jZmWqQPIjvJb3l3ZjHAt+HAvTItNMkhIUjqV80JI8wP3erzIf3tAt VoLIw5iL5w4HAYcWsn9DYcecXZdv39MnKL5UGzMX3bkee2U7kGYtgskU+mdPa1Wl WzquIPlLeKL2KNSXEfbkPtcKM/fvkURsNzEDvg+PBQLdI3JeR1bOeN24aiTEtiEL TecGm/kKMMJWmDdhPhFvZVD+SIdZd4LgbTawR1UE1JJg7jnEZKCvZ45mXd2eBwn/ rpEKCLBsgA59GILs3ZjZSIWskRJPzZrt463AKcN2wukkTUUkY1rhRVdOf6LZMs9Z w9iJOua3vt+HzCCxTEaH53WUeM6fn/Yeq+DGIS5Fk0G09pU7tsyJVwj3o1nJn0dl e2mcrXBJeSmi6bvvkJX45y/Y8E8Qr+ovS4uN8wG6DOWcCBQkDkugabng8vNh8GST 1wNnV9JY/CmYbU0ZIwKbbSDkcQLQuIl7kKaZMHnU74EytcKscUqqx1VqINz1tssu 1wZZGLtg3VubrZOsnUZzumD+0nI8c6QAnQK3P2PSZ0k= =i9YR -----END PGP SIGNATURE----- . Description: The VDSM service is required by a Virtualization Manager to manage the Linux hosts. VDSM manages and monitors the host's storage, memory and networks as well as virtual machine creation, other host administration tasks, statistics gathering, and log collection. Description: The org.ovirt.engine-root is a core component of oVirt. 5 ELS) - i386, noarch, s390x, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. 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. Software Description: - intel-microcode: Processor microcode for Intel CPUs Details: It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a malicious process that is executing on the CPU core. This vulnerability is also known as L1 Terminal Fault (L1TF). This vulnerability is also known as Rogue System Register Read (RSRE). ========================================================================== Ubuntu Security Notice USN-3655-1 May 22, 2018 linux vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 14.04 LTS Summary: Several security issues were addressed in the Linux kernel. (CVE-2018-3639) Jan H. Schonherr discovered that the Xen subsystem did not properly handle block IO merges correctly in some situations. An attacker in a guest vm could use this to cause a denial of service (host crash) or possibly gain administrative privileges in the host. (CVE-2017-12134) It was discovered that the Bluetooth HIP Protocol implementation in the Linux kernel did not properly validate HID connection setup information. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-13220) It was discovered that a buffer overread vulnerability existed in the keyring subsystem of the Linux kernel. (CVE-2017-13305) It was discovered that the netlink subsystem in the Linux kernel did not properly restrict observations of netlink messages to the appropriate net namespace. (CVE-2017-17449) It was discovered that a race condition existed in the i8042 serial device driver implementation in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-18079) It was discovered that a race condition existed in the Device Mapper component of the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-18203) It was discovered that a race condition existed in the OCFS2 file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2017-18204) It was discovered that an infinite loop could occur in the madvise(2) implementation in the Linux kernel in certain circumstances. A local attacker could use this to cause a denial of service (system hang). (CVE-2017-18208) Kefeng Wang discovered that a race condition existed in the memory locking implementation in the Linux kernel. A local attacker could use this to cause a denial of service. (CVE-2017-18221) Silvio Cesare discovered a buffer overwrite existed in the NCPFS implementation in the Linux kernel. A remote attacker controlling a malicious NCPFS server could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-8822) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS: linux-image-3.13.0-149-generic 3.13.0-149.199 linux-image-3.13.0-149-generic-lpae 3.13.0-149.199 linux-image-3.13.0-149-lowlatency 3.13.0-149.199 linux-image-3.13.0-149-powerpc-e500 3.13.0-149.199 linux-image-3.13.0-149-powerpc-e500mc 3.13.0-149.199 linux-image-3.13.0-149-powerpc-smp 3.13.0-149.199 linux-image-3.13.0-149-powerpc64-emb 3.13.0-149.199 linux-image-3.13.0-149-powerpc64-smp 3.13.0-149.199 linux-image-generic 3.13.0.149.159 linux-image-generic-lpae 3.13.0.149.159 linux-image-lowlatency 3.13.0.149.159 linux-image-powerpc-e500 3.13.0.149.159 linux-image-powerpc-e500mc 3.13.0.149.159 linux-image-powerpc-smp 3.13.0.149.159 linux-image-powerpc64-emb 3.13.0.149.159 linux-image-powerpc64-smp 3.13.0.149.159 Please note that fully mitigating CVE-2018-3639 (Spectre Variant 4) may require corresponding processor microcode/firmware updates or, in virtual environments, hypervisor updates. On i386 and amd64 architectures, the SSBD feature is required to enable the kernel mitigations. BIOS vendors will be making updates available for Intel processors that implement SSBD and Ubuntu is working with Intel to provide future microcode updates. Ubuntu users with a processor from a different vendor should contact the vendor to identify necessary firmware updates. Ubuntu provided corresponding QEMU updates for users of self-hosted virtual environments in USN 3651-1. Ubuntu users in cloud environments should contact the cloud provider to confirm that the hypervisor has been updated to expose the new CPU features to virtual machines. References: https://usn.ubuntu.com/usn/usn-3655-1 CVE-2017-12134, CVE-2017-13220, CVE-2017-13305, CVE-2017-17449, CVE-2017-18079, CVE-2017-18203, CVE-2017-18204, CVE-2017-18208, CVE-2017-18221, CVE-2018-3639, CVE-2018-8822, https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/Variant4 Package Information: https://launchpad.net/ubuntu/+source/linux/3.13.0-149.199

IOT TAXONOMY

AFFECTED PRODUCTS