CVE-2016-9383

Description

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.

CVSS Metrics

• v3.0•HIGH•Score: 8.8CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
• v2.0•HIGH•Score: 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.14%• Percentile: 33%

Techniques & Countermeasures

• CWE-20•Improper Input Validation

  The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected Systems

• citrix•xenserver

  6.0.2 | 6.2.0 | 6.5 | 7.0

References (5)

• http://www.securityfocus.com/bid/94474
• https://security.gentoo.org/glsa/201612-56
• http://xenbits.xen.org/xsa/advisory-195.html
• http://www.securitytracker.com/id/1037346
• https://support.citrix.com/article/CTX218775