Ubuntu 15.10 - PT Chown Arbitrary PTs Access Via User Namespace Privilege Escalation

Ubuntu 15.10 - PT Chown Arbitrary PTs Access Via User Namespace Privilege Escalation Source: http://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/ Introduction Problem description: With Ubuntu Wily and earlier, /usr/lib/ptchown was used to change ownership of slave pts...

Ubuntu < 15.10 - PT Chown Arbitrary PTs Access Via User Namespace Privilege Escalation

Source: http://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/ Introduction Problem description: With Ubuntu Wily and earlier, /usr/lib/ptchown was used to change ownership of slave pts devices in /dev/pts to the same uid holding the master file descriptor for the slave...