Vulnerability Information
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
N/A
Vulnerability Description
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.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen 安全漏洞
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.x版本的arch/x86/xstate.c文件中的‘xrstor’函数存在安全漏洞，该漏洞源于程序运行在AMD64进程中时没有正确处理硬件FSW.ES位的写入操作。本地攻击者可借助等待异常和掩码位利用该漏洞获取其他虚拟机中敏感的寄存器内容信息。（注：该漏洞源于CNNVD-201306-040补丁的不完全修复）
CVSS Information
N/A
Vulnerability Type
N/A