CVE-2013-2777

Published: 8 April 2013

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.

Notes

see CVE-2013-1776 for complete information. This CVE was split from
CVE-2013-1776 for accounting purposes

Status

References

• http://xforce.iss.net/xforce/xfdb/82453
• http://www.sudo.ws/sudo/alerts/tty_tickets.html
• http://www.sudo.ws/repos/sudo/rev/bfa23f089bba
• http://www.sudo.ws/repos/sudo/rev/2f3225a2a4a4
• http://www.slackware.com/security/viewer.php?l=slackware-security&y=2013&m=slackware-security.517440
• http://www.openwall.com/lists/oss-security/2013/02/27/31
• http://www.debian.org/security/2012/dsa-2642
• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=701839
• https://www.cve.org/CVERecord?id=CVE-2013-2777
• NVD
• Launchpad
• Debian

Bugs

• https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/87023
• https://bugzilla.redhat.com/show_bug.cgi?id=916365