National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

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Search Parameters:
  • Contains Software Flaws (CVE)
  • CPE Product Version: cpe:/a:citrix:xenserver:6.0.2
There are 30 matching records.
Displaying matches 1 through 20.
Vuln ID Summary CVSS Severity
CVE-2016-9603

A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support before 2.9; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.

Published: July 27, 2018; 05:29:00 PM -04:00
V3: 9.9 CRITICAL
V2: 9.0 HIGH
CVE-2017-2620

Quick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process.

Published: July 27, 2018; 03:29:00 PM -04:00
V3: 9.9 CRITICAL
V2: 9.0 HIGH
CVE-2017-2615

Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or potentially execute arbitrary code on the host with privileges of QEMU process on the host.

Published: July 02, 2018; 09:29:00 PM -04:00
V3: 9.1 CRITICAL
V2: 9.0 HIGH
CVE-2018-8897

A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for #DB exceptions that are deferred by MOV SS or POP SS, as demonstrated by (for example) privilege escalation in Windows, macOS, some Xen configurations, or FreeBSD, or a Linux kernel crash. The MOV to SS and POP SS instructions inhibit interrupts (including NMIs), data breakpoints, and single step trap exceptions until the instruction boundary following the next instruction (SDM Vol. 3A; section 6.8.3). (The inhibited data breakpoints are those on memory accessed by the MOV to SS or POP to SS instruction itself.) Note that debug exceptions are not inhibited by the interrupt enable (EFLAGS.IF) system flag (SDM Vol. 3A; section 2.3). If the instruction following the MOV to SS or POP to SS instruction is an instruction like SYSCALL, SYSENTER, INT 3, etc. that transfers control to the operating system at CPL < 3, the debug exception is delivered after the transfer to CPL < 3 is complete. OS kernels may not expect this order of events and may therefore experience unexpected behavior when it occurs.

Published: May 08, 2018; 02:29:00 PM -04:00
V3: 7.8 HIGH
V2: 7.2 HIGH
CVE-2017-12137

arch/x86/mm.c in Xen allows local PV guest OS users to gain host OS privileges via vectors related to map_grant_ref.

Published: August 24, 2017; 10:29:00 AM -04:00
V3: 8.8 HIGH
V2: 7.2 HIGH
CVE-2017-12136

Race condition in the grant table code in Xen 4.6.x through 4.9.x allows local guest OS administrators to cause a denial of service (free list corruption and host crash) or gain privileges on the host via vectors involving maptrack free list handling.

Published: August 24, 2017; 10:29:00 AM -04:00
V3: 7.8 HIGH
V2: 6.9 MEDIUM
CVE-2017-12135

Xen allows local OS guest users to cause a denial of service (crash) or possibly obtain sensitive information or gain privileges via vectors involving transitive grants.

Published: August 24, 2017; 10:29:00 AM -04:00
V3: 8.8 HIGH
V2: 4.6 MEDIUM
CVE-2017-12134

The xen_biovec_phys_mergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt block device data streams and consequently obtain sensitive memory information, cause a denial of service, or gain host OS privileges by leveraging incorrect block IO merge-ability calculation.

Published: August 24, 2017; 10:29:00 AM -04:00
V3: 8.8 HIGH
V2: 7.2 HIGH
CVE-2016-9637

The (1) ioport_read and (2) ioport_write 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.

Published: February 16, 2017; 09:59:13 PM -05:00
V3: 7.5 HIGH
V2: 3.7 LOW
CVE-2017-5573

An issue was discovered in Linux Foundation xapi in Citrix XenServer through 7.0. An authenticated read-only administrator can cancel tasks of other administrators.

Published: January 30, 2017; 11:59:00 AM -05:00
V3: 4.9 MEDIUM
V2: 4.0 MEDIUM
CVE-2017-5572

An issue was discovered in Linux Foundation xapi in Citrix XenServer through 7.0. An authenticated read-only administrator can corrupt the host database.

Published: January 30, 2017; 11:59:00 AM -05:00
V3: 6.5 MEDIUM
V2: 5.5 MEDIUM
CVE-2016-10025

VMFUNC emulation in Xen 4.6.x through 4.8.x on x86 systems using AMD virtualization extensions (aka SVM) allows local HVM guest OS users to cause a denial of service (hypervisor crash) by leveraging a missing NULL pointer check.

Published: January 26, 2017; 10:59:00 AM -05:00
V3: 5.5 MEDIUM
V2: 2.1 LOW
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.

Published: January 26, 2017; 10:59:00 AM -05:00
V3: 6.0 MEDIUM
V2: 4.9 MEDIUM
CVE-2016-9386

The x86 emulator in Xen does not properly treat x86 NULL segments as unusable when accessing memory, which might allow local HVM guest users to gain privileges via vectors involving "unexpected" base/limit values.

Published: January 23, 2017; 04:59:02 PM -05:00
V3: 7.8 HIGH
V2: 4.6 MEDIUM
CVE-2016-9385

The x86 segment base write emulation functionality in Xen 4.4.x through 4.7.x allows local x86 PV guest OS administrators to cause a denial of service (host crash) by leveraging lack of canonical address checks.

Published: January 23, 2017; 04:59:02 PM -05:00
V3: 6.0 MEDIUM
V2: 4.9 MEDIUM
CVE-2016-9383

Xen, when running on a 64-bit hypervisor, allows local x86 guest OS users to modify arbitrary memory and consequently obtain sensitive information, cause a denial of service (host crash), or execute arbitrary code on the host by leveraging broken emulation of bit test instructions.

Published: January 23, 2017; 04:59:02 PM -05:00
V3: 8.8 HIGH
V2: 7.2 HIGH
CVE-2016-9382

Xen 4.0.x through 4.7.x mishandle x86 task switches to VM86 mode, which allows local 32-bit x86 HVM guest OS users to gain privileges or cause a denial of service (guest OS crash) by leveraging a guest operating system that uses hardware task switching and allows a new task to start in VM86 mode.

Published: January 23, 2017; 04:59:02 PM -05:00
V3: 7.8 HIGH
V2: 4.6 MEDIUM
CVE-2016-9381

Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a "double fetch" vulnerability.

Published: January 23, 2017; 04:59:02 PM -05:00
V3: 7.5 HIGH
V2: 6.9 MEDIUM
CVE-2016-9380

The pygrub boot loader emulator in Xen, when nul-delimited output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via NUL bytes in the bootloader configuration file.

Published: January 23, 2017; 04:59:02 PM -05:00
V3: 7.5 HIGH
V2: 4.6 MEDIUM
CVE-2016-9379

The pygrub boot loader emulator in Xen, when S-expression output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via string quotes and S-expressions in the bootloader configuration file.

Published: January 23, 2017; 04:59:02 PM -05:00
V3: 7.9 HIGH
V2: 4.6 MEDIUM