Total
443 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2017-17566 | 1 Xen | 1 Xen | 2019-10-02 | 6.9 MEDIUM | 7.8 HIGH |
| An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service (host OS crash) or gain host OS privileges in shadow mode by mapping a certain auxiliary page. | |||||
| CVE-2018-19963 | 1 Xen | 1 Xen | 2019-10-02 | 6.9 MEDIUM | 7.8 HIGH |
| An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because x86 IOREQ server resource accounting (for external emulators) was mishandled. | |||||
| CVE-2018-19962 | 3 Citrix, Debian, Xen | 3 Xenserver, Debian Linux, Xen | 2019-10-02 | 6.9 MEDIUM | 7.8 HIGH |
| 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. | |||||
| CVE-2017-14431 | 1 Xen | 1 Xen | 2019-10-02 | 4.9 MEDIUM | 5.5 MEDIUM |
| Memory leak in Xen 3.3 through 4.8.x allows guest OS users to cause a denial of service (ARM or x86 AMD host OS memory consumption) by continually rebooting, because certain cleanup is skipped if no pass-through device was ever assigned, aka XSA-207. | |||||
| CVE-2017-8905 | 1 Xen | 1 Xen | 2019-10-02 | 6.8 MEDIUM | 8.8 HIGH |
| Xen through 4.6.x on 64-bit platforms mishandles a failsafe callback, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-215. | |||||
| CVE-2017-8903 | 1 Xen | 1 Xen | 2019-10-02 | 7.2 HIGH | 8.8 HIGH |
| Xen through 4.8.x on 64-bit platforms mishandles page tables after an IRET hypercall, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-213. | |||||
| CVE-2018-15468 | 1 Xen | 1 Xen | 2019-10-02 | 4.9 MEDIUM | 6.0 MEDIUM |
| An issue was discovered in Xen through 4.11.x. The DEBUGCTL MSR contains several debugging features, some of which virtualise cleanly, but some do not. In particular, Branch Trace Store is not virtualised by the processor, and software has to be careful to configure it suitably not to lock up the core. As a result, it must only be available to fully trusted guests. Unfortunately, in the case that vPMU is disabled, all value checking was skipped, allowing the guest to choose any MSR_DEBUGCTL setting it likes. A malicious or buggy guest administrator (on Intel x86 HVM or PVH) can lock up the entire host, causing a Denial of Service. | |||||
| CVE-2018-10982 | 2 Debian, Xen | 2 Debian Linux, Xen | 2019-10-02 | 7.2 HIGH | 8.8 HIGH |
| An issue was discovered in Xen through 4.10.x allowing x86 HVM guest OS users to cause a denial of service (unexpectedly high interrupt number, array overrun, and hypervisor crash) or possibly gain hypervisor privileges by setting up an HPET timer to deliver interrupts in IO-APIC mode, aka vHPET interrupt injection. | |||||
| CVE-2018-12891 | 2 Debian, Xen | 2 Debian Linux, Xen | 2019-10-02 | 4.9 MEDIUM | 6.5 MEDIUM |
| An issue was discovered in Xen through 4.10.x. Certain PV MMU operations may take a long time to process. For that reason Xen explicitly checks for the need to preempt the current vCPU at certain points. A few rarely taken code paths did bypass such checks. By suitably enforcing the conditions through its own page table contents, a malicious guest may cause such bypasses to be used for an unbounded number of iterations. A malicious or buggy PV guest may cause a Denial of Service (DoS) affecting the entire host. Specifically, it may prevent use of a physical CPU for an indeterminate period of time. All Xen versions from 3.4 onwards are vulnerable. Xen versions 3.3 and earlier are vulnerable to an even wider class of attacks, due to them lacking preemption checks altogether in the affected code paths. Only x86 systems are affected. ARM systems are not affected. Only multi-vCPU x86 PV guests can leverage the vulnerability. x86 HVM or PVH guests as well as x86 single-vCPU PV ones cannot leverage the vulnerability. | |||||
| CVE-2018-10981 | 2 Debian, Xen | 2 Debian Linux, Xen | 2019-10-02 | 4.9 MEDIUM | 6.5 MEDIUM |
| An issue was discovered in Xen through 4.10.x allowing x86 HVM guest OS users to cause a denial of service (host OS infinite loop) in situations where a QEMU device model attempts to make invalid transitions between states of a request. | |||||
| CVE-2018-12893 | 2 Debian, Xen | 2 Debian Linux, Xen | 2019-10-02 | 2.1 LOW | 6.5 MEDIUM |
| An issue was discovered in Xen through 4.10.x. One of the fixes in XSA-260 added some safety checks to help prevent Xen livelocking with debug exceptions. Unfortunately, due to an oversight, at least one of these safety checks can be triggered by a guest. A malicious PV guest can crash Xen, leading to a Denial of Service. All Xen systems which have applied the XSA-260 fix are vulnerable. Only x86 systems are vulnerable. ARM systems are not vulnerable. Only x86 PV guests can exploit the vulnerability. x86 HVM and PVH guests cannot exploit the vulnerability. An attacker needs to be able to control hardware debugging facilities to exploit the vulnerability, but such permissions are typically available to unprivileged users. | |||||
| CVE-2017-8904 | 1 Xen | 1 Xen | 2019-10-02 | 6.8 MEDIUM | 8.8 HIGH |
| Xen through 4.8.x mishandles the "contains segment descriptors" property during GNTTABOP_transfer (aka guest transfer) operations, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-214. | |||||
| CVE-2017-15594 | 1 Xen | 1 Xen | 2019-10-02 | 4.6 MEDIUM | 8.8 HIGH |
| An issue was discovered in Xen through 4.9.x allowing x86 SVM PV guest OS users to cause a denial of service (hypervisor crash) or gain privileges because IDT settings are mishandled during CPU hotplugging. | |||||
| CVE-2017-12137 | 3 Citrix, Debian, Xen | 3 Xenserver, Debian Linux, Xen | 2019-10-02 | 7.2 HIGH | 8.8 HIGH |
| arch/x86/mm.c in Xen allows local PV guest OS users to gain host OS privileges via vectors related to map_grant_ref. | |||||
| CVE-2017-15593 | 1 Xen | 1 Xen | 2019-10-02 | 4.9 MEDIUM | 6.5 MEDIUM |
| An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service (memory leak) because reference counts are mishandled. | |||||
| CVE-2015-8553 | 2 Redhat, Xen | 2 Enterprise Linux, Xen | 2019-08-13 | 2.1 LOW | 6.5 MEDIUM |
| Xen allows guest OS users to obtain sensitive information from uninitialized locations in host OS kernel memory by not enabling memory and I/O decoding control bits. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-0777. | |||||
| CVE-2017-12136 | 3 Citrix, Debian, Xen | 3 Xenserver, Debian Linux, Xen | 2019-05-06 | 6.9 MEDIUM | 7.8 HIGH |
| 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. | |||||
| CVE-2018-19967 | 2 Debian, Xen | 2 Debian Linux, Xen | 2019-04-17 | 4.9 MEDIUM | 6.5 MEDIUM |
| An issue was discovered in Xen through 4.11.x on Intel x86 platforms allowing guest OS users to cause a denial of service (host OS hang) because Xen does not work around Intel's mishandling of certain HLE transactions associated with the KACQUIRE instruction prefix. | |||||
| CVE-2018-12892 | 2 Debian, Xen | 2 Debian Linux, Xen | 2019-03-29 | 6.5 MEDIUM | 9.9 CRITICAL |
| An issue was discovered in Xen 4.7 through 4.10.x. libxl fails to pass the readonly flag to qemu when setting up a SCSI disk, due to what was probably an erroneous merge conflict resolution. Malicious guest administrators or (in some situations) users may be able to write to supposedly read-only disk images. Only emulated SCSI disks (specified as "sd" in the libxl disk configuration, or an equivalent) are affected. IDE disks ("hd") are not affected (because attempts to make them readonly are rejected). Additionally, CDROM devices (that is, devices specified to be presented to the guest as CDROMs, regardless of the nature of the backing storage on the host) are not affected; they are always read only. Only systems using qemu-xen (rather than qemu-xen-traditional) as the device model version are vulnerable. Only systems using libxl or libxl-based toolstacks are vulnerable. (This includes xl, and libvirt with the libxl driver.) The vulnerability is present in Xen versions 4.7 and later. (In earlier versions, provided that the patch for XSA-142 has been applied, attempts to create read only disks are rejected.) If the host and guest together usually support PVHVM, the issue is exploitable only if the malicious guest administrator has control of the guest kernel or guest kernel command line. | |||||
| CVE-2018-15469 | 2 Debian, Xen | 2 Debian Linux, Xen | 2019-03-08 | 4.9 MEDIUM | 6.5 MEDIUM |
| An issue was discovered in Xen through 4.11.x. ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they will simply not be properly set up, resulting in subsequent grant-related hypercalls hitting BUG() checks. An unprivileged guest can cause a BUG() check in the hypervisor, resulting in a denial-of-service (crash). | |||||