VCPUOP_initialise DoS

ISSUE DESCRIPTION hypercallcreatecontinuation is a variadic function which uses a printf-like format string to interpret its parameters. Error handling for a bad format character was done using BUG, which crashes Xen. One path, via the VCPUOPinitialise hypercall, has a bad format character. The B...

PT-2019-4883 · Xen +1 · Xen +1

Name of the Vulnerable Software and Affected Versions: Xen versions through 4.12.x Description: The issue is related to a flaw in restartable PV type change operations, which can be exploited by a remote attacker to gain access to confidential data, compromise its integrity, and cause a denial of...

PT-2019-4882

Name of the Vulnerable Software and Affected Versions Xen versions 4.6 through 4.12.x Description The issue is related to incorrect error handling for a malformed format character in the hypercall initialise function of the Xen hypervisor. This can be exploited by a remote attacker to cause a...

ALPINE-CVE-2019-17347

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because a guest can manipulate its virtualised %cr4 in a way that is incompatible with Linux and possibly other guest kernels...

DEBIAN-CVE-2019-17341

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges by leveraging a page-writability race condition during addition of a passed-through PCI device...

DEBIAN-CVE-2019-17344

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service by leveraging a long-running operation that exists to support restartability of PTE updates...

DEBIAN-CVE-2019-17346

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers PCID and TLB flushes...

UBUNTU-CVE-2019-17343

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges by leveraging incorrect use of the HVM physmap concept for PV domains...

PT-2019-5143 · Xen +1 · Xen +1

Name of the Vulnerable Software and Affected Versions: Xen versions prior to 4.12 Description: The issue allows x86 PV guest OS users to cause a denial of service or gain privileges because a guest can manipulate its virtualised %cr4 in a way that is incompatible with Linux. This is related to an...

kernel: vhost-net: guest to host kernel escape during migration

A buffer overflow flaw was found in the way Linux kernel's vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this fla...

kernel: vhost-net: guest to host kernel escape during migration

A buffer overflow flaw was found in the way Linux kernel's vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this fla...

Low: Red Hat Security Advisory: libguestfs-winsupport security update

An update for libguestfs-winsupport is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerabilit...

kernel: Mishandling of indirect calls weakens Spectre mitigation for paravirtual guests

It was found that paravirtpatchcall/jump functions in the arch/x86/kernel/paravirt.c in the Linux kernel mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtualized guests...

Security update for virtualbox (important)

openSUSE Security Update: Security update for virtualbox Announcement ID: openSUSE-SU-2019:1547-1 Rating: important References: 1122212 Cross-References: CVE-2018-0734 CVE-2018-11763 CVE-2018-11784 CVE-2018-3309 CVE-2019-2446 CVE-2019-2448 CVE-2019-2450 CVE-2019-2451 CVE-2019-2500 CVE-2019-2501...

CVE-2019-10116

An Insecure Permissions issue issue 3 of 3 was discovered in GitLab Community and Enterprise Edition before 11.7.8, 11.8.x before 11.8.4, and 11.9.x before 11.9.2. Guests of a project were allowed to see Related Branches created for an issue...

CVE-2019-10116

An Insecure Permissions issue issue 3 of 3 was discovered in GitLab Community and Enterprise Edition before 11.7.8, 11.8.x before 11.8.4, and 11.9.x before 11.9.2. Guests of a project were allowed to see Related Branches created for an issue...

CVE-2019-10116

Removed by vendor...

Security update for libvirt (important)

openSUSE Security Update: Security update for libvirt Announcement ID: openSUSE-SU-2019:1288-1 Rating: important References: 1081516 1102604 1104662 1106420 1108086 1108395 1112182 1117058 1118952 1120813 1123642 1124667 1125665 1126325 1127458 1130129 Cross-References: CVE-2019-3840 Affected...

EulerOS Virtualization 2.5.3 : kernel (EulerOS-SA-2019-1178)

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - It was found that paravirtpatchcall/jump functions in the arch/x86/kernel/paravirt.c in the Linux kernel mishandles certain...

openSUSE Security Update : virtualbox (openSUSE-2019-943)

This update for virtualbox fixes the following issues : virtualbox was updated to version 5.2.22 released November 09 2018 by Oracle. Security issues fixed : - Fixed a guest-to-host excape via the e1000 virtual network driver bsc1115041. Non-security issues fixed : - Audio: Fixed a regression in...