CVE-2013-2212

kernel: xen: Excessive time to disable caching with HVM guests with PCI passthrough

The vmx_set_uc_mode function in Xen 3.3 through 4.3, when disabling caches, allows local HVM guests with access to memory mapped I/O regions to cause a denial of service (CPU consumption and possibly hypervisor or guest kernel panic) via a crafted GFN range.

CVSS 2.0 · 5.7 Medium EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2013-2211

xen: libxl allows guest write access to sensitive console related xenstore keys

The libxenlight (libxl) toolstack library in Xen 4.0.x, 4.1.x, and 4.2.x uses weak permissions for xenstore keys for paravirtualised and emulated serial console devices, which allows local guest administrators to modify the xenstore value via unspecified vectors.

CVSS 2.0 · 7.4 High EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2013-2196

xen: Multiple vulnerabilities in libelf PV kernel handling

Multiple unspecified vulnerabilities in the Elf parser (libelf) in Xen 4.2.x and earlier allow local guest administrators with certain permissions to have an unspecified impact via a crafted kernel, related to "other problems" that are not CVE-2013-2194 or CVE-2013-2195.

CVSS 2.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2013-2195

xen: Multiple vulnerabilities in libelf PV kernel handling

The Elf parser (libelf) in Xen 4.2.x and earlier allow local guest administrators with certain permissions to have an unspecified impact via a crafted kernel, related to "pointer dereferences" involving unexpected calculations.

CVSS 2.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2013-2194

xen: Multiple vulnerabilities in libelf PV kernel handling

Multiple integer overflows in the Elf parser (libelf) in Xen 4.2.x and earlier allow local guest administrators with certain permissions to have an unspecified impact via a crafted kernel.

CVSS 2.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2013-2078

kernel: xen: Hypervisor crash due to missing exception recovery on XSETBV

Xen 4.0.2 through 4.0.4, 4.1.x, and 4.2.x allows local PV guest users to cause a denial of service (hypervisor crash) via certain bit combinations to the XSETBV instruction.

CVSS 2.0 · 4.7 Medium EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2013-2077

kernel: xen: Hypervisor crash due to missing exception recovery on XRSTOR

Xen 4.0.x, 4.1.x, and 4.2.x does not properly restrict the contents of a XRSTOR, which allows local PV guest users to cause a denial of service (unhandled exception and hypervisor crash) via unspecified vectors.

CVSS 2.0 · 5.2 Medium EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2013-2076

kernel: xen: Information leak on XSAVE/XRSTOR capable AMD CPUs

Xen 4.0.x, 4.1.x, and 4.2.x, when running on AMD64 processors, only save/restore the FOP, FIP, and FDP x87 registers in FXSAVE/FXRSTOR when an exception is pending, which allows one domain to determine portions of the state of floating point instructions of other domains, which can be leveraged to obtain sensitive information such as cryptographic keys, a similar vulnerability to CVE-2006-1056. NOTE: this is the documented behavior of AMD64 processors, but it is inconsistent with Intel processors in a security-relevant fashion that was not addressed by the kernels.

CVSS 2.0 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2013-2072

xen: Buffer overflow in xencontrol Python bindings affecting xend

Buffer overflow in the Python bindings for the xc_vcpu_setaffinity call in Xen 4.0.x, 4.1.x, and 4.2.x allows local administrators with permissions to configure VCPU affinity to cause a denial of service (memory corruption and xend toolstack crash) and possibly gain privileges via a crafted cpumap.

CVSS 2.0 · 7.4 High EPSS 1.1% KEV · Not listed

Vendors

Debian Xen

Products

Debian Linux Xen

CVE-2013-1964

xen: grant table hypercall acquire/release imbalance

Xen 4.0.x and 4.1.x incorrectly releases a grant reference when releasing a non-v1, non-transitive grant, which allows local guest administrators to cause a denial of service (host crash), obtain sensitive information, or possibly have other impacts via unspecified vectors.

CVSS 2.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2014-1950

xen: use-after-free in xc_cpupool_getinfo() under memory pressure (XSA-88)

Use-after-free vulnerability in the xc_cpupool_getinfo function in Xen 4.1.x through 4.3.x, when using a multithreaded toolstack, does not properly handle a failure by the xc_cpumap_alloc function, which allows local users with access to management functions to cause a denial of service (heap corruption) and possibly gain privileges via unspecified vectors.

CVSS 2.0 · 4.6 Medium EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2013-1922

kvm: qemu-nbd block format auto-detection vulnerability

qemu-nbd in QEMU, as used in Xen 4.2.x, determines the format of a raw disk image based on the header, which allows local guest OS administrators to read arbitrary files on the host by modifying the header to identify a different format, which is used when the guest is restarted, a different vulnerability than CVE-2008-2004.

CVSS 2.0 · 3.3 Low EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2013-1920

kernel: xen: potential use of freed memory in event channel operations

Xen 4.2.x, 4.1.x, and earlier, when the hypervisor is running "under memory pressure" and the Xen Security Module (XSM) is enabled, uses the wrong ordering of operations when extending the per-domain event channel tracking table, which causes a use-after-free and allows local guest kernels to inject arbitrary events and gain privileges via unspecified vectors.

CVSS 2.0 · 4.4 Medium EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2013-1919

kernel: xen: Several access permission issues with IRQs for unprivileged guests

Xen 4.2.x and 4.1.x does not properly restrict access to IRQs, which allows local stub domain clients to gain access to IRQs and cause a denial of service via vectors related to "passed-through IRQs or PCI devices."

CVSS 2.0 · 4.7 Medium EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2013-1918

kernel: xen: Several long latency operations are not preemptible

Certain page table manipulation operations in Xen 4.1.x, 4.2.x, and earlier are not preemptible, which allows local PV kernels to cause a denial of service via vectors related to "deep page table traversal."

CVSS 2.0 · 4.7 Medium EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2013-1917

kernel: xen: Xen PV DoS vulnerability with SYSENTER

Xen 3.1 through 4.x, when running 64-bit hosts on Intel CPUs, does not clear the NT flag when using an IRET after a SYSENTER instruction, which allows PV guest users to cause a denial of service (hypervisor crash) by triggering a #GP fault, which is not properly handled by another IRET instruction.

CVSS 2.0 · 1.9 Low EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2013-1442

kernel: xen: information leak on AVX and/or LWP capable CPUs

Xen 4.0 through 4.3.x, when using AVX or LWP capable CPUs, does not properly clear previous data from registers when using an XSAVE or XRSTOR to extend the state components of a saved or restored vCPU after touching other restored extended registers, which allows local guest OSes to obtain sensitive information by reading the registers.

CVSS 2.0 · 1.2 Low EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2013-1432

kernel: xen: Page reference counting error due to XSA-45/CVE-2013-1918 fixes

Xen 4.1.x and 4.2.x, when the XSA-45 patch is in place, does not properly maintain references on pages stored for deferred cleanup, which allows local PV guest kernels to cause a denial of service (premature page free and hypervisor crash) or possibly gain privileges via unspecified vectors.

CVSS 2.0 · 7.4 High EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen

CVE-2013-0231

kernel: xen: pciback DoS via not rate limited log messages

The pciback_enable_msi function in the PCI backend driver (drivers/xen/pciback/conf_space_capability_msi.c) in Xen for the Linux kernel 2.6.18 and 3.8 allows guest OS users with PCI device access to cause a denial of service via a large number of kernel log messages. NOTE: some of these details are obtained from third party information.

CVSS 2.0 · 4.9 Medium EPSS < 1% KEV · Not listed

Vendors

Linux Redhat Xen

Products

Linux Kernel Enterprise Linux Xen

CVE-2013-0215

xen: oxenstored incorrect handling of certain Xenbus ring states

oxenstored in Xen 4.1.x, Xen 4.2.x, and xen-unstable does not properly consider the state of the Xenstore ring during read operations, which allows guest OS users to cause a denial of service (daemon crash and host-control outage, or memory consumption) or obtain sensitive control-plane data by leveraging guest administrative access.

CVSS 2.0 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Xen

Products

Xen