Red Hat Bugzilla – Bug 949753
CVE-2013-2777 sudo: bypass of tty_tickets constraints
Last modified: 2013-11-22 00:36:55 EST
Common Vulnerabilities and Exposures assigned an identifier CVE-2013-2777 to
the following vulnerability:
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 a 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.
Looking at the upstream commits, it seems that this flaw exists because of incomplete/insufficient fix applied for the CVE-2013-1776 flaw.
Since the patch for CVE-2013-1776 was not backported to Red Hat Enterprise Linux 5, this flaw does not affect it
(In reply to Huzaifa S. Sidhpurwala from comment #2)
> Looking at the upstream commits, it seems that this flaw exists because of
> incomplete/insufficient fix applied for the CVE-2013-1776 flaw.
Hence this CVE affects versions starting with 1.7.10 and 1.8.5 and is corrected in versions 1.7.10p5 and 1.8.6p6.
This issue has been addressed in following products:
Red Hat Enterprise Linux 6
Via RHSA-2013:1701 https://rhn.redhat.com/errata/RHSA-2013-1701.html