CVE-2020-11934

MediumCVSS 5.9/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N

Weakness enumeration

CWE-668

Affected software

No affected versions have been published.

Timeline

Published: Jul 29, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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