Permissions, Privileges, and Access Controls in Sudo - CVE-2013-2777

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Main Vulnerability Database Vulnerabilities #VU42929

Permissions, Privileges, and Access Controls in Sudo - CVE-2013-2777

Published: April 8, 2013 / Updated: August 11, 2020


Vulnerability identifier: #VU42929
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2013-2777
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Sudo
Affected software:
Sudo

Detailed vulnerability description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

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.


How to mitigate CVE-2013-2777

Install update from vendor's website.

Sources