Hi Thanks for the update
--- Thanks, Noam Rathaus On Apr 21, 2017 04:15, "Tyler Hicks" <tyhi...@canonical.com> wrote: > As a note to any backporters, the original fix for this bug should > include the following change as well: > > https://code.launchpad.net/~tyhicks/lightdm/guest-dir- > perms/+merge/322906 > > It is technically optional but definitely recommended. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1677924 > > Title: > Local privilege escalation via guest user login > > Status in Light Display Manager: > Fix Released > Status in Light Display Manager 1.18 series: > Fix Released > Status in Light Display Manager 1.20 series: > Fix Released > Status in Light Display Manager 1.22 series: > Fix Released > Status in lightdm package in Ubuntu: > Fix Released > Status in lightdm source package in Xenial: > Fix Released > Status in lightdm source package in Yakkety: > Fix Released > Status in lightdm source package in Zesty: > Fix Released > > Bug description: > It was discovered that a local attacker could watch for lightdm's > guest-account script to create a /tmp/guest-XXXXXX file and then quickly > create > the lowercase representation of the guest user's home directory before > lightdm > could. This allowed the attacker to have control of the guest user's home > directory and, subsequently, gain control of an arbitrary directory in > the > filesystem which could lead to privilege escalation. > > To manage notifications about this bug go to: > https://bugs.launchpad.net/lightdm/+bug/1677924/+subscriptions > -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1677924 Title: Local privilege escalation via guest user login Status in Light Display Manager: Fix Released Status in Light Display Manager 1.18 series: Fix Released Status in Light Display Manager 1.20 series: Fix Released Status in Light Display Manager 1.22 series: Fix Released Status in lightdm package in Ubuntu: Fix Released Status in lightdm source package in Xenial: Fix Released Status in lightdm source package in Yakkety: Fix Released Status in lightdm source package in Zesty: Fix Released Bug description: It was discovered that a local attacker could watch for lightdm's guest-account script to create a /tmp/guest-XXXXXX file and then quickly create the lowercase representation of the guest user's home directory before lightdm could. This allowed the attacker to have control of the guest user's home directory and, subsequently, gain control of an arbitrary directory in the filesystem which could lead to privilege escalation. To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1677924/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
