RHEL 8 : virt:rhel (RHSA-2019:1580)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:1580 advisory. The libvirt library contains a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems...

libvirt: arbitrary command execution via virConnectBaselineHypervisorCPU and virConnectCompareHypervisorCPU APIs

The virConnectBaselineHypervisorCPU and virConnectCompareHypervisorCPU libvirt APIs accept an "emulator" argument to specify the program providing emulation for a domain. Since v1.2.19, libvirt will execute that program to probe the domain's capabilities. Read-only clients could specify an...

libvirt: arbitrary file read/exec via virDomainSaveImageGetXMLDesc API

It was discovered that libvirtd would permit read-only clients to use the virDomainSaveImageGetXMLDesc API, specifying an arbitrary path which would be accessed with the permissions of the libvirtd process. An attacker with access to the libvirtd socket could use this to probe the existence of...

libvirt: arbitrary command execution via virConnectGetDomainCapabilities API

The virConnectGetDomainCapabilities libvirt API accepts an "emulatorbin" argument to specify the program providing emulation for a domain. Since v1.2.19, libvirt will execute that program to probe the domain's capabilities. Read-only clients could specify an arbitrary path for this argument,...

libvirt: virDomainManagedSaveDefineXML API exposed to readonly clients

It was discovered that libvirtd would permit readonly clients to use the virDomainManagedSaveDefineXML API, which would permit them to modify managed save state files. If a managed save had already been created by a privileged user, a local attacker could modify this file such that libvirtd would...

openSUSE Security Update : the Linux Kernel (openSUSE-2019-1579) (SACK Panic) (SACK Slowness)

The openSUSE Leap 15.0 kernel was updated to receive various security and bugfixes. The following security bugs were fixed : - CVE-2019-11477: A sequence of SACKs may have been crafted by a remote attacker such that one can trigger an integer overflow, leading to a kernel panic. bsc1137586. -...

rhn-tools:1.0 bug fix update

An update is available for osad, spacewalk-abrt, rhn-custom-info, rhncfg, spacewalk-oscap, spacewalk-backend, rhn-virtualization, spacewalk-usix, rhnpush, spacewalk-client-cert, cobbler. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detail...

SUSE-SU-2019:1550-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP1 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2019-12819: The function mdiobusregister called putdevice, which triggered a fixedmdiobusinit use-after-free. This would cause a denial of service. bsc113829...

OPENSUSE-SU-2019:1579-1 Security update for the Linux Kernel

The openSUSE Leap 15.0 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2019-11477: A sequence of SACKs may have been crafted by a remote attacker such that one can trigger an integer overflow, leading to a kernel panic. bsc1137586. -...

Security update for the Linux Kernel (important)

openSUSE Security Update: Security update for the Linux Kernel Announcement ID: openSUSE-SU-2019:1579-1 Rating: important References: 1012382 1050242 1051510 1053043 1056787 1058115 1061840 1063638 1064802 1065600 1065729 1066129 1068546 1071995 1075020 1082387 1083647 1085535 1099658 1103992...

SUSE-SU-2019:1536-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 12 SP4 kernel was updated to 4.12.14 to receive various security and bugfixes. The following security bugs were fixed: - CVE-2019-11477: A sequence of SACKs may have been crafted such that one can trigger an integer overflow, leading to a kernel panic. - CVE-2019-11479: ...

SUSE-SU-2019:1535-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 Azure kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2019-11477: A sequence of SACKs may have been crafted such that one can trigger an integer overflow, leading to a kernel panic. - CVE-2019-11478: It was...

SUSE-SU-2019:1530-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 12 SP4 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2019-11477: A sequence of SACKs may have been crafted such that one can trigger an integer overflow, leading to a kernel panic. - CVE-2019-11478: It was...

SUSE-SU-2019:1529-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2019-11477: A sequence of SACKs may have been crafted such that one can trigger an integer overflow, leading to a kernel panic. - CVE-2019-11478: It was possible...

RHEL 8 : Advanced Virtualization (RHSA-2019:1455)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:1455 advisory. The Advanced Virtualization module provides the user-space component for running virtual machines that use KVM in environments managed by Re...

hardware: Micro-architectural Load Port Data Sampling - Information Leak (MLPDS)

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 ar...

hardware: Microarchitectural Store Buffer Data Sampling (MSBDS)

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...

libvirt: wrong permissions in systemd admin-sock due to missing SocketMode parameter

A flaw was found in libvirt in version 4.1.0 and earlier. A missing SocketMode configuration parameter allows any user on the host to connect using virtlockd-admin-sock or virtlogd-admin-sock and perform administrative tasks against the virtlockd and virtlogd daemons. The highest threat from this...

hardware: Microarchitectural Fill Buffer Data Sampling (MFBDS)

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...

hardware: 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...