xenstore denial of service via repeated update

ISSUE DESCRIPTION xenstored supports transactions, such that if writes which would invalidate assumptions of a transaction occur, the entire transaction fails. Typical response on a failed transaction is to simply retry the transaction until it succeeds. Unprivileged domains may issue writes to...

xen-tools -- xenstore denial of service via repeated update

The Xen Project reports: Unprivileged guests may be able to stall progress of the control domain or driver domain, possibly leading to a Denial of Service DoS of the entire host...

DEBIAN-CVE-2017-5856

Memory leak in the megasashandledcmd function in hw/scsi/megasas.c in QEMU aka Quick Emulator allows local guest OS privileged users to cause a denial of service host memory consumption via MegaRAID Firmware Interface MFI commands with the sglist size set to a value over 2 Gb...

ALPINE-CVE-2017-5578

Memory leak in the virtiogpuresourceattachbacking function in hw/display/virtio-gpu.c in QEMU aka Quick Emulator allows local guest OS users to cause a denial of service host memory consumption via a large number of VIRTIOGPUCMDRESOURCEATTACHBACKING commands...

DEBIAN-CVE-2017-5578

Memory leak in the virtiogpuresourceattachbacking function in hw/display/virtio-gpu.c in QEMU aka Quick Emulator allows local guest OS users to cause a denial of service host memory consumption via a large number of VIRTIOGPUCMDRESOURCEATTACHBACKING commands...

DEBIAN-CVE-2017-6317

Memory leak in the addshaderprogram function in vrendrenderer.c in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service host memory consumption via vectors involving the sprog variable...

UBUNTU-CVE-2017-5578

Memory leak in the virtiogpuresourceattachbacking function in hw/display/virtio-gpu.c in QEMU aka Quick Emulator allows local guest OS users to cause a denial of service host memory consumption via a large number of VIRTIOGPUCMDRESOURCEATTACHBACKING commands...

UBUNTU-CVE-2017-5526

Memory leak in hw/audio/es1370.c in QEMU aka Quick Emulator allows local guest OS privileged users to cause a denial of service host memory consumption and QEMU process crash via a large number of device unplug operations...

Cirrus VGA Heap overflow via display refresh

ISSUE DESCRIPTION When a graphics update command gets passed to the VGA emulator, there are 3 possible modes that can be used to update the display: blank - Clears the display text - Treats the display as showing text graph - Treats the display as showing graphics After the display geometry gets...

BistroStays 3.0 - guests SQL Injection

BistroStays 3.0 - guests SQL Injection Exploit Title: BistroStays - Vacation Rental Software v3.0 - SQL Injection Google Dork: N/A Date: 09.03.2017 Vendor Homepage: https://www.ncrypted.net/ Software: https://www.ncrypted.net/bistrostays Demo: http://demo.ncryptedprojects.com/bistrostaysv3/...

UBUNTU-CVE-2016-9818

Xen through 4.7.x allows local ARM guest OS users to cause a denial of service host crash via vectors involving an asynchronous abort while at HYP...

ALPINE-CVE-2016-9815

Xen through 4.7.x allows local ARM guest OS users to cause a denial of service host panic by sending an asynchronous abort...

ALPINE-CVE-2016-9378

Xen 4.5.x through 4.7.x on AMD systems without the NRip feature, when emulating instructions that generate software interrupts, allows local HVM guest OS users to cause a denial of service guest crash by leveraging an incorrect choice for software interrupt delivery...

UBUNTU-CVE-2016-9377

Xen 4.5.x through 4.7.x on AMD systems without the NRip feature, when emulating instructions that generate software interrupts, allows local HVM guest OS users to cause a denial of service guest crash by leveraging IDT entry miscalculation...

cirrus_bitblt_cputovideo does not check if memory region is safe

ISSUE DESCRIPTION In CIRRUSBLTMODEMEMSYSSRC mode the bitblit copy routine cirrusbitbltcputovideo fails to check wethehr the specified memory region is safe. IMPACT A malicious guest administrator can cause an out of bounds memory write, very likely exploitable as a privilege escalation. VULNERABL...

CVE-2016-9637

The 1 ioportread and 2 ioportwrite functions in Xen, when qemu is used as a device model within Xen, might allow local x86 HVM guest OS administrators to gain qemu process privileges via vectors involving an out-of-range ioport access...

oob access in cirrus bitblt copy

ISSUE DESCRIPTION When doing bitblt copy backwards, qemu should negate the blit width. This avoids an oob access before the start of video memory. IMPACT A malicious guest administrator can cause an out of bounds memory access, leading to information disclosure or privilege escalation. VULNERABLE...

Xen Intel VMX hvmemul_vmfunc() NULL Pointer Dereference DoS (XSA-203)

According to its self-reported version number, the Xen hypervisor installed on the remote host is missing a security update. It is, therefore, affected by a NULL pointer dereference flaw due to a failure to utilize necessary NULL checks before doing indirect function calls through the hvmemulvmfu...

DEBIAN-CVE-2016-10024

Xen through 4.8.x allows local x86 PV guest OS kernel administrators to cause a denial of service host hang or crash by modifying the instruction stream asynchronously while performing certain kernel operations...

ALPINE-CVE-2016-10024

Xen through 4.8.x allows local x86 PV guest OS kernel administrators to cause a denial of service host hang or crash by modifying the instruction stream asynchronously while performing certain kernel operations...