golang-github-snapcore-snapd-dev: It was discovered that snapctl user-open allowed altering the $XDG_DATA_DIRS environment variable when calling the sy...
CVE-2020-11934 is fixed in 9 products on 1 platform, first by golang-github-snapcore-snapd-dev 2.45.1+18.04.2, released July 15, 2020. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| golang-github-snapcore-snapd-dev · Ubuntu 18.04.6 LTS (bionic) | 2.45.1+18.04.2 | golang-github-snapcore-snapd-dev 2.45.1+18.04.2 | Jul 15, 2020 |
| golang-github-snapcore-snapd-dev · Ubuntu 20.04 LTS (focal) | 2.45.1+20.04.2 | golang-github-snapcore-snapd-dev 2.45.1+20.04.2 | Jul 15, 2020 |
| golang-github-ubuntu-core-snappy-dev · Ubuntu 18.04.6 LTS (bionic) | 2.45.1+18.04.2 | golang-github-ubuntu-core-snappy-dev 2.45.1+18.04.2 | Jul 15, 2020 |
| golang-github-ubuntu-core-snappy-dev · Ubuntu 20.04 LTS (focal) | 2.45.1+20.04.2 | golang-github-ubuntu-core-snappy-dev 2.45.1+20.04.2 | Jul 15, 2020 |
| snap-confine · Ubuntu 18.04.6 LTS (bionic) | 2.45.1+18.04.2 | snap-confine 2.45.1+18.04.2 | Jul 15, 2020 |
| snap-confine · Ubuntu 20.04 LTS (focal) | 2.45.1+20.04.2 | snap-confine 2.45.1+20.04.2 | Jul 15, 2020 |
| snapd · Ubuntu 18.04.6 LTS (bionic) | 2.45.1+18.04.2 | snapd 2.45.1+18.04.2 | Jul 15, 2020 |
| snapd · Ubuntu 20.04 LTS (focal) | 2.45.1+20.04.2 | snapd 2.45.1+20.04.2 | Jul 15, 2020 |
| snapd-xdg-open · Ubuntu 18.04.6 LTS (bionic) | 2.45.1+18.04.2 | snapd-xdg-open 2.45.1+18.04.2 | Jul 15, 2020 |
| snapd-xdg-open · Ubuntu 20.04 LTS (focal) | 2.45.1+20.04.2 | snapd-xdg-open 2.45.1+20.04.2 | Jul 15, 2020 |
| ubuntu-core-launcher · Ubuntu 18.04.6 LTS (bionic) | 2.45.1+18.04.2 | ubuntu-core-launcher 2.45.1+18.04.2 | Jul 15, 2020 |
| ubuntu-core-launcher · Ubuntu 20.04 LTS (focal) | 2.45.1+20.04.2 | ubuntu-core-launcher 2.45.1+20.04.2 | Jul 15, 2020 |
| ubuntu-core-snapd-units · Ubuntu 18.04.6 LTS (bionic) | 2.45.1+18.04.2 | ubuntu-core-snapd-units 2.45.1+18.04.2 | Jul 15, 2020 |
| ubuntu-core-snapd-units · Ubuntu 20.04 LTS (focal) | 2.45.1+20.04.2 | ubuntu-core-snapd-units 2.45.1+20.04.2 | Jul 15, 2020 |
| ubuntu-snappy · Ubuntu 18.04.6 LTS (bionic) | 2.45.1+18.04.2 | ubuntu-snappy 2.45.1+18.04.2 | Jul 15, 2020 |
| ubuntu-snappy · Ubuntu 20.04 LTS (focal) | 2.45.1+20.04.2 | ubuntu-snappy 2.45.1+20.04.2 | Jul 15, 2020 |
| ubuntu-snappy-cli · Ubuntu 18.04.6 LTS (bionic) | 2.45.1+18.04.2 | ubuntu-snappy-cli 2.45.1+18.04.2 | Jul 15, 2020 |
| ubuntu-snappy-cli · Ubuntu 20.04 LTS (focal) | 2.45.1+20.04.2 | ubuntu-snappy-cli 2.45.1+20.04.2 | Jul 15, 2020 |
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