Id:
CVE-2020-11934
Comment
:
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.
CVSSv2 Score:
1.9
Access vector:
|
LOCAL
|
Access complexity:
|
MEDIUM
|
Authentication:
|
NONE
|
Confidentiality impact:
|
NONE
|
Integrity impact:
|
PARTIAL
|
Availability impact:
|
NONE
|
CVSSv2 Vector:
AV:L/AC:M/Au:N/C:N/I:P/A:N
CVSSv3 Score:
5.9
Attack vector:
|
LOCAL
|
Attack complexity:
|
LOW
|
Privileges required:
|
LOW
|
User interaction:
|
REQUIRED
|
Scope:
|
CHANGED
|
Confidentiality impact:
|
NONE
|
Integrity impact:
|
HIGH
|
Availability impact:
|
NONE
|
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N
References: