Description
LightDM 1.7.5 through 1.8.3 and 1.9.x before 1.9.2 does not apply the AppArmor profile to the Guest account, which allows local users to bypass intended restrictions by leveraging the Guest account.
References
- USN-2012-1 vendor-advisory
- https://bugs.launchpad.net/ubuntu/%2Bsource/lightdm/%2Bbug/1243339
- [LightDM] 20131030 lightdm 1.9.2 released mailing-list
- [LightDM] 20131031 lightdm 1.8.4 released mailing-list