安全公告详情

NS-SA-2019-0125

2019-07-17 15:02:58

简介

important: kernel/qemu-kvm security update

严重级别

important

主题

An update for kernel/qemu-kvm is now available for NewStart CGSL MAIN 4.05.
NewStart Security has rated this update as having a security impact of important. A Common Vunlnerability Scoring System(CVSS)base score, which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.

详细描述

kernel: The python-perf package contains a module that permits applications written in the Python programming language to use the interface to manipulate perf events.
qemu-kvm: This package provides a qemu guest agent daemon to be running inside of linux guests to provide the guest information.


Security Fix(es):
kernel: 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. 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)
kernel: bugfix
qemu-kvm: Quick emulator (QEMU), compiled with the Cirrus CLGD 54xx VGA Emulator support, is vulnerable to an OOB write access issue. The issue could occur while writing to VGA memory via mode4and5 write functions. A privileged user inside guest could use this flaw to crash the QEMU process resulting in Denial of Serivce (DoS).(CVE-2017-15289)
qemu-kvm: bugfix


Solution:
For details on how to apply this update, which includes the changes described in this advisory, refer to:
http://security.gd-linux.com/how_to_apply_patch.html
Remember the build tag is 4.05.F11.

影响组件

  • kernel
  • qemu-kvm

影响产品

  • CGSL MAIN 4.05

更新包

{"fix":[{"product":"CGSL MAIN 4.05","pkgs":[{"binary":["kernel-2.6.32-642.13.1.el6.cgsl7680.x86_64.rpm","kernel-abi-whitelists-2.6.32-642.13.1.el6.cgsl7680.noarch.rpm","kernel-debug-2.6.32-642.13.1.el6.cgsl7680.x86_64.rpm","kernel-debug-debuginfo-2.6.32-642.13.1.el6.cgsl7680.x86_64.rpm","kernel-debug-devel-2.6.32-642.13.1.el6.cgsl7680.x86_64.rpm","kernel-debuginfo-2.6.32-642.13.1.el6.cgsl7680.x86_64.rpm","kernel-debuginfo-common-x86_64-2.6.32-642.13.1.el6.cgsl7680.x86_64.rpm","kernel-devel-2.6.32-642.13.1.el6.cgsl7680.x86_64.rpm","kernel-doc-2.6.32-642.13.1.el6.cgsl7680.noarch.rpm","kernel-firmware-2.6.32-642.13.1.el6.cgsl7680.noarch.rpm","kernel-headers-2.6.32-642.13.1.el6.cgsl7680.x86_64.rpm","perf-2.6.32-642.13.1.el6.cgsl7680.x86_64.rpm","perf-debuginfo-2.6.32-642.13.1.el6.cgsl7680.x86_64.rpm","python-perf-2.6.32-642.13.1.el6.cgsl7680.x86_64.rpm","python-perf-debuginfo-2.6.32-642.13.1.el6.cgsl7680.x86_64.rpm"],"source":"kernel-2.6.32-642.13.1.el6.cgsl7680.src.rpm"},{"binary":["qemu-guest-agent-0.12.1.2-2.503.el6_9.5.x86_64.rpm","qemu-img-0.12.1.2-2.503.el6_9.5.x86_64.rpm","qemu-kvm-0.12.1.2-2.503.el6_9.5.x86_64.rpm","qemu-kvm-debuginfo-0.12.1.2-2.503.el6_9.5.x86_64.rpm","qemu-kvm-tools-0.12.1.2-2.503.el6_9.5.x86_64.rpm"],"source":"qemu-kvm-0.12.1.2-2.503.el6_9.5.src.rpm"}]}]}

CVE

参考