Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
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 Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen 信息泄露漏洞
Vulnerability Description
Xen是英国剑桥大学开发的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。 Xen 4.0至4.3.x版本中存在信息泄露漏洞，该漏洞源于当使用支持AVX或LWP指令集的处理器时，访客操作系统可以执行XSAVE/ XRSTOR操作访问上一个vCPU的寄存器值。本地访客OS权限的攻击者可通过读取寄存器利用该漏洞获取敏感信息。
CVSS Information
N/A
Vulnerability Type
N/A