** Changed in: lightdm (Ubuntu Artful)
Status: Triaged => In Progress
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https://bugs.launchpad.net/bugs/1663157
Title:
Guest session processes are not confined in 16.10 and newer releases
Status in Light Display Manager:
New
Status in apparmor package in Ubuntu:
Invalid
Status in lightdm package in Ubuntu:
In Progress
Status in lightdm source package in Yakkety:
Fix Released
Status in lightdm source package in Zesty:
Fix Released
Status in lightdm source package in Artful:
In Progress
Bug description:
Processes launched under a lightdm guest session are not confined by
the /usr/lib/lightdm/lightdm-guest-session AppArmor profile in Ubuntu
16.10, Ubuntu 17.04, and Ubuntu Artful (current dev release). The
processes are unconfined.
The simple test case is to log into a guest session, launch a terminal
with ctrl-alt-t, and run the following command:
$ cat /proc/self/attr/current
Expected output, as seen in Ubuntu 16.04 LTS, is:
/usr/lib/lightdm/lightdm-guest-session (enforce)
Running the command inside of an Ubuntu 16.10 and newer guest session
results in:
unconfined
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