Vulnerability Information
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Vulnerability Title
Sandbox escape vulnerability via snapctl user-open (xdg-open)
Vulnerability Description
It was discovered that snapctl user-open allowed altering the $XDG_DATA_DIRS environment variable when calling the system xdg-open. OpenURL() in usersession/userd/launcher.go would alter $XDG_DATA_DIRS to append a path to a directory controlled by the calling snap. A malicious snap could exploit this to bypass intended access restrictions to control how the host system xdg-open script opens the URL and, for example, execute a script shipped with the snap without confinement. This issue did not affect Ubuntu Core systems. Fixed in snapd versions 2.45.1ubuntu0.2, 2.45.1+18.04.2 and 2.45.1+20.04.2.
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N
Vulnerability Type
N/A
Vulnerability Title
Canonical snapd 安全漏洞
Vulnerability Description
Canonical snapd是英国科能（Canonical）公司的一套软件部署和包管理系统。 Canonical snapd中存在安全漏洞，该漏洞源于snapctl user-open允许在调用系统xdg-open时更改$XDG_DATA_DIRS环境变量。攻击者可利用该漏洞绕过访问限制，以控制主机系统xdg-open脚本打开URL的方式。
CVSS Information
N/A
Vulnerability Type
N/A