CVE-2017-8903
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.
- Mettez à jour vers 4.8.1-1+deb9u1
Publication Mise à jour
PatchFirst · Vulnérabilités récentes
Vulnérabilités de xen · Page n° 16
Vulnérabilités publiées pour xen au cours des 30 derniers jours : 9. Présentes dans le catalogue KEV : 0.
Vulnérabilités : 488
CVE-2017-7995
Xen PV guest before Xen 4.3 checked access permissions to MMIO ranges only after accessing them, allowing host PCI device space memory reads, leading to information disclosure. This is an error in the get_user function. NOTE: the upstream Xen Project considers versions before 4.5.x to be EOL.
- Mettez à jour vers 4.3.0-1
Publication Mise à jourCVE-2017-7228
An issue (known as XSA-212) was discovered in Xen, with fixes available for 4.8.x, 4.7.x, 4.6.x, 4.5.x, and 4.4.x. The earlier XSA-29 fix introduced an insufficient check on XENMEM_exchange input, allowing the caller to drive hypervisor memory accesses outside of the guest provided input/output arrays.
- Mettez à jour vers 4.8.1-1
Publication Mise à jourCVE-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.
- Mettez à jour vers 4.8.0-1
Publication Mise à jourCVE-2016-9817
Xen through 4.7.x allows local ARM guest OS users to cause a denial of service (host crash) via vectors involving a (1) data or (2) prefetch abort with the ESR_EL2.EA bit set.
- Mettez à jour vers 4.8.0-1
Publication Mise à jourCVE-2016-9816
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 EL2.
- Mettez à jour vers 4.8.0-1
Publication Mise à jourCVE-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.
- Mettez à jour vers 4.8.0-1
Publication Mise à jourCVE-2016-9384
Xen 4.7 allows local guest OS users to obtain sensitive host information by loading a 32-bit ELF symbol table.
- Mettez à jour vers 4.8.0-1
Publication Mise à jourCVE-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.
- Mettez à jour vers 4.8.0-1
Publication Mise à jourCVE-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.
- Mettez à jour vers 4.8.0-1
Publication Mise à jourCVE-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.
- Mettez à jour vers 4.4.0-1
Publication Mise à jourCVE-2016-9932
CMPXCHG8B emulation in Xen 3.3.x through 4.7.x on x86 systems allows local HVM guest OS users to obtain sensitive information from host stack memory via a "supposedly-ignored" operand size prefix.
- Mettez à jour vers 4.8.0~rc3-1
Publication Mise à jourCVE-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.
- Mettez à jour vers 4.8.0-1
Publication Mise à jourCVE-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.
- Mettez à jour vers 4.8.0-1
Publication Mise à jourCVE-2016-10013
Xen through 4.8.x allows local 64-bit x86 HVM guest OS users to gain privileges by leveraging mishandling of SYSCALL singlestep during emulation.
- Mettez à jour vers 4.8.0-1
Publication Mise à jourCVE-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.
- Mettez à jour vers 4.8.0-1
Publication Mise à jourCVE-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.
- Mettez à jour vers 4.8.0-1
Publication Mise à jourCVE-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.
- Mettez à jour vers 4.8.0-1
Publication Mise à jourCVE-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.
- Mettez à jour vers 4.8.0-1
Publication Mise à jourCVE-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.
- Mettez à jour vers 4.4.0-1
Publication Mise à jour
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