PRIOn knowledge basePRION:CVE-2013-2777Input validation
sudo before 1.7.10p5 and 1.8.x before 1.8.6p6, when the tty_tickets option is enabled, does not properly validate the controlling terminal device, which allows local users with sudo permissions to hijack the authorization of another terminal via vectors related to a session without a controlling terminal device and connecting to the standard input, output, and error file descriptors of another terminal. NOTE: this is one of three closely-related vulnerabilities that were originally assigned CVE-2013-1776, but they have been SPLIT because of different affected versions.
References
bugs.debian.org/cgi-bin/bugreport.cgi?bug=701839
lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
rhn.redhat.com/errata/RHSA-2013-1701.html
www.debian.org/security/2013/dsa-2642
www.openwall.com/lists/oss-security/2013/02/27/31
www.securityfocus.com/bid/58207
www.slackware.com/security/viewer.php?l=slackware-security&y=2013&m=slackware-security.517440
bugs.launchpad.net/ubuntu/+source/sudo/+bug/87023
bugzilla.redhat.com/show_bug.cgi?id=916365
exchange.xforce.ibmcloud.com/vulnerabilities/82453
support.apple.com/kb/HT205031
www.sudo.ws/repos/sudo/rev/2f3225a2a4a4
www.sudo.ws/repos/sudo/rev/bfa23f089bba
www.sudo.ws/sudo/alerts/tty_tickets.html
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