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xen xen 4.2.3 vulnerabilities and exploits

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7.8
CVSSv2

CVE-2015-4104

Xen 3.3.x up to and including 4.5.x does not properly restrict access to PCI MSI mask bits, which allows local x86 HVM guest users to cause a denial of service (unexpected interrupt and host crash) via unspecified vectors.
Xen Xen 3.3.0Xen Xen 3.3.1Xen Xen 3.3.2Xen Xen 3.4.0Xen Xen 3.4.1Xen Xen 3.4.2Xen Xen 3.4.3Xen Xen 3.4.4Xen Xen 4.0.0Xen Xen 4.0.1Xen Xen 4.0.2Xen Xen 4.0.3
4.9
CVSSv2

CVE-2015-2150

Xen 3.3.x up to and including 4.5.x and the Linux kernel up to and including 3.19.1 do not properly restrict access to PCI command registers, which might allow local guest OS users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or...
Ubuntu Ubuntu 12.04Xen Xen 3.3.0Xen Xen 3.3.1Xen Xen 3.3.2Xen Xen 3.4.0Xen Xen 3.4.1Xen Xen 3.4.2Xen Xen 3.4.3Xen Xen 3.4.4Xen Xen 4.0.0Xen Xen 4.0.1Xen Xen 4.0.2
8.8
CVSSv3

CVE-2016-6258

The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and previous versions allows local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries.
Xen Xen 3.4.0Xen Xen 3.4.2Xen Xen 3.4.3Xen Xen 3.4.4Xen Xen 4.0.0Xen Xen 4.0.1Xen Xen 4.0.3Xen Xen 4.0.4Xen Xen 4.1.0Xen Xen 4.1.1Xen Xen 4.1.2Xen Xen 4.1.3
4.7
CVSSv3

CVE-2016-4963

The libxl device-handling in Xen up to and including 4.6.x allows local guest OS users with access to the driver domain to cause a denial of service (management tool confusion) by manipulating information in the backend directories in xenstore.
Xen Xen 4.0.0Xen Xen 4.0.1Xen Xen 4.0.2Xen Xen 4.0.3Xen Xen 4.0.4Xen Xen 4.1.0Xen Xen 4.1.1Xen Xen 4.1.2Xen Xen 4.1.3Xen Xen 4.1.4Xen Xen 4.1.5Xen Xen 4.1.6
6.3
CVSSv3

CVE-2016-1571

The paging_invlpg function in include/asm-x86/paging.h in Xen 3.3.x up to and including 4.6.x, when using shadow mode paging or nested virtualization is enabled, allows local HVM guest users to cause a denial of service (host crash) via a non-canonical guest address in an INVVPID...
Citrix XenserverXen Xen 3.3.0Xen Xen 3.3.1Xen Xen 3.3.2Xen Xen 3.4.0Xen Xen 3.4.1Xen Xen 3.4.2Xen Xen 3.4.3Xen Xen 3.4.4Xen Xen 4.1.0Xen Xen 4.1.1Xen Xen 4.1.2
7.1
CVSSv2

CVE-2014-9030

The do_mmu_update function in arch/x86/mm.c in Xen 3.2.x up to and including 4.4.x does not properly manage page references, which allows remote domains to cause a denial of service by leveraging control over an HVM guest and a crafted MMU_MACHPHYS_UPDATE.
Xen Xen 3.2.0Xen Xen 3.2.1Xen Xen 3.2.2Xen Xen 3.2.3Xen Xen 3.3.0Xen Xen 3.3.1Xen Xen 3.3.2Xen Xen 3.4.0Xen Xen 3.4.1Xen Xen 3.4.2Xen Xen 3.4.3Xen Xen 3.4.4
1.9
CVSSv2

CVE-2014-8595

arch/x86/x86_emulate/x86_emulate.c in Xen 3.2.1 up to and including 4.4.x does not properly check privileges, which allows local HVM guest users to gain privileges or cause a denial of service (crash) via a crafted (1) CALL, (2) JMP, (3) RETF, (4) LCALL, (5) LJMP, or (6) LRET far...
Debian Debian Linux 7.0Xen Xen 3.2.1Xen Xen 3.2.2Xen Xen 3.2.3Xen Xen 3.3.0Xen Xen 3.3.1Xen Xen 3.3.2Xen Xen 3.4.0Xen Xen 3.4.1Xen Xen 3.4.2Xen Xen 3.4.3Xen Xen 3.4.4
2.1
CVSSv2

CVE-2015-7971

Xen 3.2.x up to and including 4.6.x does not limit the number of printk console messages when logging certain pmu and profiling hypercalls, which allows local guests to cause a denial of service via a sequence of crafted (1) HYPERCALL_xenoprof_op hypercalls, which are not properl...
Xen Xen 3.2.0Xen Xen 3.2.1Xen Xen 3.2.2Xen Xen 3.2.3Xen Xen 3.3.0Xen Xen 3.3.1Xen Xen 3.3.2Xen Xen 3.4.0Xen Xen 3.4.1Xen Xen 3.4.2Xen Xen 3.4.3Xen Xen 3.4.4
4.9
CVSSv2

CVE-2015-4164

The compat_iret function in Xen 3.1 up to and including 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service (large loop and system hang) via a hypercall_iret call with EFLAGS.VM set.
Xen Xen 3.1.3Xen Xen 3.1.4Xen Xen 3.2.0Xen Xen 3.2.1Xen Xen 3.2.2Xen Xen 3.2.3Xen Xen 3.3.0Xen Xen 3.3.1Xen Xen 3.3.2Xen Xen 3.4.0Xen Xen 3.4.1Xen Xen 3.4.2
2.1
CVSSv2

CVE-2015-2045

The HYPERVISOR_xen_version hypercall in Xen 3.2.x up to and including 4.5.x does not properly initialize data structures, which allows local guest users to obtain sensitive information via unspecified vectors.
Xen Xen 3.2.0Xen Xen 3.2.1Xen Xen 3.2.2Xen Xen 3.2.3Xen Xen 3.3.0Xen Xen 3.3.1Xen Xen 3.3.2Xen Xen 3.4.0Xen Xen 3.4.1Xen Xen 3.4.2Xen Xen 3.4.3Xen Xen 3.4.4
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CVSSv4
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