Citrix XenServer 7.1 and newer allows Directory Traversal.
Max CVSS
10.0
EPSS Score
3.28%
Published
2018-08-15
Updated
2018-10-23
arch/x86/mm.c in Xen allows local PV guest OS users to gain host OS privileges via vectors related to map_grant_ref.
Max CVSS
8.8
EPSS Score
0.06%
Published
2017-08-24
Updated
2019-10-03
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.
Max CVSS
8.8
EPSS Score
0.06%
Published
2017-08-24
Updated
2020-04-14
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.
Max CVSS
8.8
EPSS Score
0.06%
Published
2017-08-24
Updated
2019-10-03
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.
Max CVSS
9.9
EPSS Score
0.15%
Published
2018-07-27
Updated
2021-08-04
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.
Max CVSS
9.1
EPSS Score
0.15%
Published
2018-07-03
Updated
2023-02-12
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.
Max CVSS
9.9
EPSS Score
0.14%
Published
2018-07-27
Updated
2021-08-04
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.
Max CVSS
8.8
EPSS Score
0.07%
Published
2017-01-23
Updated
2017-07-01
The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and earlier allows local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries.
Max CVSS
8.8
EPSS Score
0.06%
Published
2016-08-02
Updated
2017-07-01
Citrix XenServer 7.0 before Hotfix XS70E003, when a deployment has been upgraded from an earlier release, might allow remote attackers on the management network to "compromise" a host by leveraging credentials for an Active Directory account.
Max CVSS
9.8
EPSS Score
0.86%
Published
2016-06-13
Updated
2016-06-20
The VGA module in QEMU improperly performs bounds checking on banked access to video memory, which allows local guest OS administrators to execute arbitrary code on the host by changing access modes after setting the bank register, aka the "Dark Portal" issue.
Max CVSS
8.8
EPSS Score
0.15%
Published
2016-05-11
Updated
2021-08-04
Xen 4.6.x, 4.5.x, 4.4.x, 4.3.x, and earlier do not initialize x86 FPU stack and XMM registers when XSAVE/XRSTOR are not used to manage guest extended register state, which allows local guest domains to obtain sensitive information from other domains via unspecified vectors.
Max CVSS
8.6
EPSS Score
0.31%
Published
2016-04-13
Updated
2017-07-01
The rate limiting feature in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to have unspecified impact via a large number of crafted requests.
Max CVSS
9.8
EPSS Score
1.22%
Published
2017-08-07
Updated
2021-11-17
Buffer overflow in the HVM graphics console support in Citrix XenServer 6.2 Service Pack 1 and earlier has unspecified impact and attack vectors.
Max CVSS
10.0
EPSS Score
0.66%
Published
2014-07-22
Updated
2017-08-29
14 vulnerabilities found
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