CVE-2013-2777

Description

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.

Category

4.4
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory apple.com Vendor Advisory slackware.com Vendor Advisory sudo.ws Vendor Advisory sudo.ws Vendor Advisory sudo.ws Vendor Advisory apple.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.sudo.ws/repos/sudo/rev/bfa23f089bba vendor advisory
http://www.securityfocus.com/bid/58207 vdb entry
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=701839
http://www.sudo.ws/repos/sudo/rev/2f3225a2a4a4 vendor advisory
http://rhn.redhat.com/errata/RHSA-2013-1701.html vendor advisory
http://www.debian.org/security/2013/dsa-2642 vendor advisory
http://www.openwall.com/lists/oss-security/2013/02/27/31 mailing list
http://www.sudo.ws/sudo/alerts/tty_tickets.html vendor advisory
http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html vendor advisory
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2013&m=slackware-security.517440 vendor advisory
https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/87023
https://support.apple.com/kb/HT205031 vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=916365
https://exchange.xforce.ibmcloud.com/vulnerabilities/82453 vdb entry

Frequently Asked Questions

What is the severity of CVE-2013-2777?
CVE-2013-2777 has been scored as a medium severity vulnerability.
How to fix CVE-2013-2777?
To fix CVE-2013-2777, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-2777 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2013-2777 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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