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centosCentOS ProjectCESA-2018:1632
HistoryMay 22, 2018 - 6:17 p.m.

libvirt security update

2018-05-2218:17:15
CentOS Project
lists.centos.org
89

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:N/A:N

0.003 Low

EPSS

Percentile

64.9%

JSON

CentOS Errata and Security Advisory CESA-2018:1632

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):

  • 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 libvirt side of the CVE-2018-3639 mitigation.

Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project Zero) for reporting this issue.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2018-May/085002.html

Affected packages:
libvirt
libvirt-admin
libvirt-client
libvirt-daemon
libvirt-daemon-config-network
libvirt-daemon-config-nwfilter
libvirt-daemon-driver-interface
libvirt-daemon-driver-lxc
libvirt-daemon-driver-network
libvirt-daemon-driver-nodedev
libvirt-daemon-driver-nwfilter
libvirt-daemon-driver-qemu
libvirt-daemon-driver-secret
libvirt-daemon-driver-storage
libvirt-daemon-driver-storage-core
libvirt-daemon-driver-storage-disk
libvirt-daemon-driver-storage-gluster
libvirt-daemon-driver-storage-iscsi
libvirt-daemon-driver-storage-logical
libvirt-daemon-driver-storage-mpath
libvirt-daemon-driver-storage-rbd
libvirt-daemon-driver-storage-scsi
libvirt-daemon-kvm
libvirt-daemon-lxc
libvirt-devel
libvirt-docs
libvirt-libs
libvirt-lock-sanlock
libvirt-login-shell
libvirt-nss

Upstream details at:
https://access.redhat.com/errata/RHSA-2018:1632

OSVersionArchitecturePackageVersionFilename
CentOS7x86_64libvirt< 3.9.0-14.el7_5.5libvirt-3.9.0-14.el7_5.5.x86_64.rpm
CentOS7x86_64libvirt-admin< 3.9.0-14.el7_5.5libvirt-admin-3.9.0-14.el7_5.5.x86_64.rpm
CentOS7i686libvirt-client< 3.9.0-14.el7_5.5libvirt-client-3.9.0-14.el7_5.5.i686.rpm
CentOS7x86_64libvirt-client< 3.9.0-14.el7_5.5libvirt-client-3.9.0-14.el7_5.5.x86_64.rpm
CentOS7x86_64libvirt-daemon< 3.9.0-14.el7_5.5libvirt-daemon-3.9.0-14.el7_5.5.x86_64.rpm
CentOS7x86_64libvirt-daemon-config-network< 3.9.0-14.el7_5.5libvirt-daemon-config-network-3.9.0-14.el7_5.5.x86_64.rpm
CentOS7x86_64libvirt-daemon-config-nwfilter< 3.9.0-14.el7_5.5libvirt-daemon-config-nwfilter-3.9.0-14.el7_5.5.x86_64.rpm
CentOS7x86_64libvirt-daemon-driver-interface< 3.9.0-14.el7_5.5libvirt-daemon-driver-interface-3.9.0-14.el7_5.5.x86_64.rpm
CentOS7x86_64libvirt-daemon-driver-lxc< 3.9.0-14.el7_5.5libvirt-daemon-driver-lxc-3.9.0-14.el7_5.5.x86_64.rpm
CentOS7x86_64libvirt-daemon-driver-network< 3.9.0-14.el7_5.5libvirt-daemon-driver-network-3.9.0-14.el7_5.5.x86_64.rpm
Rows per page:
1-10 of 341

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5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:N/A:N

0.003 Low

EPSS

Percentile

64.9%

JSON
Related for CESA-2018:1632
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