VDB
CVE-2020-11934
CVE-2020-11934
PUBLISHED
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.
EPSS 0.04% · 14.4th percentile
Risk Scores
EPSS Score
0.04%
14.4th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:18.04:LTS | snapd | 2.28.5+17.10, 0, 2.32.5+18.04 |
| Ubuntu:20.04:LTS | snapd | 2.45.1+20.04, 0, 2.42.1+20.04 |
| Ubuntu:16.04:LTS | snapd | 2.38, 2.39.2, 2.39.2ubuntu0.2 |
Exploit Intelligence
- https://ubuntu.com/USN-4424-1 (circl)
- https://launchpad.net/bugs/1880085 (circl)
Timeline
- Jul 15, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 1, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Sep 4, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-11934 third-party-advisory
- https://ubuntu.com/security/notices/USN-4424-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-11934 third-party-advisory