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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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 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.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen Outs指令模拟信息泄露漏洞
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 4.3.0及之前的版本中的Outs指令模拟过程中存在安全漏洞，该漏洞源于当使用FS:或GS:段时，程序使用未初始化变量作为段基址。本地64位PV客户端攻击者可通过段寄存器中的旧数据利用该漏洞获取敏感信息（栈内存内容）。
CVSS Information
N/A
Vulnerability Type
N/A