CVE-2020-11934 (GCVE-0-2020-11934)

Vulnerability from cvelistv5 – Published: 2020-07-29 16:25 – Updated: 2024-09-17 04:04
VLAI?
Title
Sandbox escape vulnerability via snapctl user-open (xdg-open)
Summary
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.
Severity ?
5.9 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N
CWE
  • Sandbox escape vulnerability
Assigner
References
https://ubuntu.com/USN-4424-1 x_refsource_CONFIRM
https://launchpad.net/bugs/1880085 x_refsource_CONFIRM
Impacted products
Vendor Product Version
Canonical snapd Affected: 2.45.1 , < 2.45.1ubuntu0.2 (custom)
Create a notification for this product.
Credits
James Henstridge
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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