It was discovered that snapctl user-open allowed altering the $XDGDATADIRS environment variable when calling the system xdg-open. OpenURL() in usersession/userd/launcher.go would alter $XDGDATADIRS 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.
[
{
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{
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}
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{
"events": [
{
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{
"last_affected": "18.04"
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{
"events": [
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"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-11934.json"