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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
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.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen 权限许可和访问控制漏洞
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 4.5.x及之前版本中存在安全漏洞，该漏洞源于程序在x86 HVM虚拟机上模拟VGA装置时，错误启用SDL或VNC后台。本地虚拟机端攻击者可借助DISPLAY环境变量利用该漏洞获取VGA控制台的访问权限。
CVSS Information
N/A
Vulnerability Type
N/A