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XEN : Security Vulnerabilities (CVSS score between 1 and 1.99)

CVSS Scores Greater Than: 0   1   2   3   4   5   6   7   8   9  
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# CVE ID CWE ID # of Exploits Vulnerability Type(s) Publish Date Update Date Score Gained Access Level Access Complexity Authentication Conf. Integ. Avail.
1 CVE-2022-29901 668 Exec Code Bypass 2022-07-12 2022-12-24
1.9
 None Local Medium Not required Partial None None
Intel microprocessor generations 6 to 8 are affected by a new Spectre variant that is able to bypass their retpoline mitigation in the kernel to leak arbitrary data. An attacker with unprivileged user access can hijack return instructions to achieve arbitrary speculative code execution under certain microarchitecture-dependent conditions.
2 CVE-2020-25604 362 DoS 2020-09-23 2022-09-30
1.9
 None Local Medium Not required None None Partial
An issue was discovered in Xen through 4.14.x. There is a race condition when migrating timers between x86 HVM vCPUs. When migrating timers of x86 HVM guests between its vCPUs, the locking model used allows for a second vCPU of the same guest (also operating on the timers) to release a lock that it didn't acquire. The most likely effect of the issue is a hang or crash of the hypervisor, i.e., a Denial of Service (DoS). All versions of Xen are affected. Only x86 systems are vulnerable. Arm systems are not vulnerable. Only x86 HVM guests can leverage the vulnerability. x86 PV and PVH cannot leverage the vulnerability. Only guests with more than one vCPU can exploit the vulnerability.
3 CVE-2018-10472 200 +Info 2018-04-27 2018-10-31
1.9
 None Local Medium Not required Partial None None
An issue was discovered in Xen through 4.10.x allowing x86 HVM guest OS users (in certain configurations) to read arbitrary dom0 files via QMP live insertion of a CDROM, in conjunction with specifying the target file as the backing file of a snapshot.
4 CVE-2017-7995 200 +Info 2017-05-03 2017-05-15
1.7
 None Local Low ??? Partial None None
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.
5 CVE-2016-7094 119 DoS Overflow 2016-09-21 2017-07-01
1.5
 None Local Medium ??? None None Partial
Buffer overflow in Xen 4.7.x and earlier allows local x86 HVM guest OS administrators on guests running with shadow paging to cause a denial of service via a pagetable update.
6 CVE-2016-4963 284 DoS 2016-06-07 2018-09-07
1.9
 None Local Medium Not required None None Partial
The libxl device-handling in Xen through 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.
7 CVE-2016-3159 200 +Info 2016-04-13 2019-02-21
1.7
 None Local Low ??? Partial None None
The fpu_fxrstor function in arch/x86/i387.c in Xen 4.x does not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allows local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-2076.
8 CVE-2016-3158 200 +Info 2016-04-13 2016-12-03
1.7
 None Local Low ??? Partial None None
The xrstor function in arch/x86/xstate.c in Xen 4.x does not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allows local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-2076.
9 CVE-2015-8552 20 DoS 2016-04-13 2017-11-04
1.7
 None Local Low ??? None None Partial
The PCI backend driver in Xen, when running on an x86 system and using Linux 3.1.x through 4.3.x as the driver domain, allows local guest administrators to generate a continuous stream of WARN messages and cause a denial of service (disk consumption) by leveraging a system with access to a passed-through MSI or MSI-X capable physical PCI device and XEN_PCI_OP_enable_msi operations, aka "Linux pciback missing sanity checks."
10 CVE-2015-2152 264 2015-03-18 2018-10-30
1.9
 None Local Medium Not required None Partial None
Xen 4.5.x and earlier enables certain default backends when emulating a VGA device for an x86 HVM guest qemu even when the configuration disables them, which allows local guest users to obtain access to the VGA console by (1) setting the DISPLAY environment variable, when compiled with SDL support, or connecting to the VNC server on (2) ::1 or (3) 127.0.0.1, when not compiled with SDL support.
11 CVE-2014-8595 17 DoS +Priv 2014-11-19 2018-10-30
1.9
 None Local Medium Not required None None Partial
arch/x86/x86_emulate/x86_emulate.c in Xen 3.2.1 through 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 branch instruction.
12 CVE-2014-3716 20 DoS 2014-05-19 2018-10-30
1.9
 None Local Medium Not required None None Partial
Xen 4.4.x does not properly check alignment, which allows local users to cause a denial of service (crash) via an unspecified field in a DTB header in a 32-bit guest kernel.
13 CVE-2013-4369 DoS 2013-10-17 2017-08-29
1.9
 None Local Medium Not required None None Partial
The xlu_vif_parse_rate function in the libxlu library in Xen 4.2.x and 4.3.x allows local users to cause a denial of service (NULL pointer dereference) by using the "@" character as the VIF rate configuration.
14 CVE-2013-4368 200 +Info 2013-10-17 2017-08-29
1.9
 None Local Medium Not required Partial None None
The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.
15 CVE-2013-4355 200 +Info 2013-10-01 2017-01-07
1.5
 None Local Medium ??? Partial None None
Xen 4.3.x and earlier does not properly handle certain errors, which allows local HVM guests to obtain hypervisor stack memory via a (1) port or (2) memory mapped I/O write or (3) other unspecified operations related to addresses without associated memory.
16 CVE-2013-1952 20 DoS 2013-05-13 2017-08-29
1.9
 None Local Medium Not required None None Partial
Xen 4.x, when using Intel VT-d for a bus mastering capable PCI device, does not properly check the source when accessing a bridge device's interrupt remapping table entries for MSI interrupts, which allows local guest domains to cause a denial of service (interrupt injection) via unspecified vectors.
17 CVE-2013-1917 20 DoS 2013-05-13 2014-04-19
1.9
 None Local Medium Not required None None Partial
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.
18 CVE-2013-1442 200 +Info 2013-09-30 2017-01-07
1.2
 None Local High Not required Partial None None
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.
19 CVE-2013-0154 DoS 2013-01-12 2017-08-29
1.9
 None Local Medium Not required None None Partial
The get_page_type function in xen/arch/x86/mm.c in Xen 4.2, when debugging is enabled, allows local PV or HVM guest administrators to cause a denial of service (assertion failure and hypervisor crash) via unspecified vectors related to a hypercall.
20 CVE-2012-4535 399 DoS 2012-11-21 2017-08-29
1.9
 None Local Medium Not required None None Partial
Xen 3.4 through 4.2, and possibly earlier versions, allows local guest OS administrators to cause a denial of service (Xen infinite loop and physical CPU consumption) by setting a VCPU with an "inappropriate deadline."
21 CVE-2012-3432 264 DoS 2012-12-03 2013-10-11
1.9
 None Local Medium Not required None None Partial
The handle_mmio function in arch/x86/hvm/io.c in the MMIO operations emulator for Xen 3.3 and 4.x, when running an HVM guest, does not properly reset certain state information between emulation cycles, which allows local guest OS users to cause a denial of service (guest OS crash) via unspecified operations on MMIO regions.
22 CVE-2012-2934 DoS 2012-12-03 2014-05-05
1.9
 None Local Medium Not required None None Partial
Xen 4.0, and 4.1, when running a 64-bit PV guest on "older" AMD CPUs, does not properly protect against a certain AMD processor bug, which allows local guest OS users to cause a denial of service (host hang) via sequential execution of instructions across a non-canonical boundary, a different vulnerability than CVE-2012-0217.
23 CVE-2012-0218 DoS 2012-12-03 2013-10-11
1.9
 None Local Medium Not required None None Partial
Xen 3.4, 4.0, and 4.1, when the guest OS has not registered a handler for a syscall or sysenter instruction, does not properly clear a flag for exception injection when injecting a General Protection Fault, which allows local PV guest OS users to cause a denial of service (guest crash) by later triggering an exception that would normally be handled within Xen.
Total number of vulnerabilities : 23   Page : 1 (This Page)
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