Vulnerabilities > Citrix > Xenserver > High
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2020-01-23 | CVE-2012-4606 | Improper Privilege Management vulnerability in Citrix Xenserver Citrix XenServer 4.1, 6.0, 5.6 SP2, 5.6 Feature Pack 1, 5.6 Common Criteria, 5.6, 5.5, 5.0, and 5.0 Update 3 contains a Local Privilege Escalation Vulnerability which could allow local users with access to a guest operating system to gain elevated privileges. | 7.8 |
| 2018-12-08 | CVE-2018-19962 | Information Exposure vulnerability in multiple products An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because small IOMMU mappings are unsafely combined into larger ones. | 7.8 |
| 2018-12-08 | CVE-2018-19961 | Incomplete Cleanup vulnerability in multiple products An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes. | 7.8 |
| 2018-05-08 | CVE-2018-8897 | Race Condition vulnerability in multiple products 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. | 7.8 |
| 2017-08-24 | CVE-2017-12137 | Classic Buffer Overflow vulnerability in multiple products arch/x86/mm.c in Xen allows local PV guest OS users to gain host OS privileges via vectors related to map_grant_ref. | 8.8 |
| 2017-08-24 | CVE-2017-12136 | Race Condition vulnerability in multiple products 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. | 7.8 |
| 2017-08-24 | CVE-2017-12135 | Incorrect Calculation vulnerability in multiple products 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. | 8.8 |
| 2017-08-24 | CVE-2017-12134 | Incorrect Calculation vulnerability in multiple products 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. | 8.8 |
| 2017-08-07 | CVE-2015-7704 | Improper Input Validation vulnerability in multiple products The ntpd client in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service via a number of crafted "KOD" messages. | 7.5 |
| 2017-02-17 | CVE-2016-9637 | Permissions, Privileges, and Access Controls vulnerability in Citrix Xenserver 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. | 7.5 |