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Last updated: 2/8/2016 8:37:34 PM

CVE Publication rate: 11.53

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Vulnerability Workload Index: 4.46
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Vulnerability Summary for CVE-2013-2776

Original release date: 04/08/2013
Last revised: 08/17/2015


sudo 1.3.5 through 1.7.10p5 and 1.8.0 through 1.8.6p6, when running on systems without /proc or the sysctl function with the tty_tickets option 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 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.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 4.4 (MEDIUM) (AV:L/AC:M/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore: 6.4
Exploitability Subscore: 3.4
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

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External Source: MISC
Name: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=701839
External Source: MISC
Name: https://bugzilla.redhat.com/show_bug.cgi?id=916365
External Source: APPLE
Name: APPLE-SA-2015-08-13-2
External Source: XF
Name: sudo-ttytickets-sec-bypass(82453)
External Source: SLACKWARE
Name: SSA:2013-065-01
External Source: BID
Name: 58207
External Source: MISC
Name: https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/87023
External Source: CONFIRM
Name: http://www.sudo.ws/repos/sudo/rev/0c0283d1fafa
Type: Advisory
External Source: CONFIRM
Name: http://www.sudo.ws/repos/sudo/rev/049a12a5cc14
Type: Advisory
External Source: CONFIRM
Name: http://www.sudo.ws/sudo/alerts/tty_tickets.html
External Source: REDHAT
Name: RHSA-2013:1701
External Source: MLIST
Name: [oss-security] 20130227 Re: CVE request: potential bypass of sudo tty_tickets constraints
External Source: DEBIAN
Name: DSA-2642
External Source: REDHAT
Name: RHSA-2013:1353
External Source: CONFIRM
Name: https://support.apple.com/kb/HT205031

Vulnerable software and versions

+ Configuration 1
+ OR
* cpe:/a:todd_miller:sudo:1.7.10
* cpe:/a:todd_miller:sudo:1.7.9p1
* cpe:/a:todd_miller:sudo:1.7.9
* cpe:/a:todd_miller:sudo:1.7.8p2
* cpe:/a:todd_miller:sudo:1.7.8p1
* cpe:/a:todd_miller:sudo:1.7.8
* cpe:/a:todd_miller:sudo:1.7.7
* cpe:/a:todd_miller:sudo:1.7.6p2
* cpe:/a:todd_miller:sudo:1.7.6p1
* cpe:/a:todd_miller:sudo:1.7.6
* cpe:/a:todd_miller:sudo:1.7.5
* cpe:/a:todd_miller:sudo:1.7.4p5
* cpe:/a:todd_miller:sudo:1.7.4p2
* cpe:/a:todd_miller:sudo:1.7.4p3
* cpe:/a:todd_miller:sudo:1.7.4
* cpe:/a:todd_miller:sudo:1.7.4p1
* cpe:/a:todd_miller:sudo:1.7.4p4
* cpe:/a:todd_miller:sudo:1.7.4p6
* cpe:/a:todd_miller:sudo:1.7.3b1
* cpe:/a:todd_miller:sudo:1.7.2p6
* cpe:/a:todd_miller:sudo:1.7.2p5
* cpe:/a:todd_miller:sudo:1.7.2p4
* cpe:/a:todd_miller:sudo:1.7.2p2
* cpe:/a:todd_miller:sudo:1.7.2p3
* cpe:/a:todd_miller:sudo:1.7.2
* cpe:/a:todd_miller:sudo:1.7.2p1
* cpe:/a:todd_miller:sudo:1.7.2p7
* cpe:/a:todd_miller:sudo:1.7.1
* cpe:/a:todd_miller:sudo:1.7.0
* cpe:/a:todd_miller:sudo:1.6.9p23
* cpe:/a:todd_miller:sudo:1.6.5
* cpe:/a:todd_miller:sudo:1.6.4p2
* cpe:/a:todd_miller:sudo:1.6.9p20
* cpe:/a:todd_miller:sudo:1.6.9p21
* cpe:/a:todd_miller:sudo:1.6.4
* cpe:/a:todd_miller:sudo:1.6.8
* cpe:/a:todd_miller:sudo:1.6.6
* cpe:/a:todd_miller:sudo:1.6.7
* cpe:/a:todd_miller:sudo:1.6.9p22
* cpe:/a:todd_miller:sudo:1.6.2p3
* cpe:/a:todd_miller:sudo:1.6.7p5
* cpe:/a:todd_miller:sudo:1.6.8p12
* cpe:/a:todd_miller:sudo:1.6.3_p7
* cpe:/a:todd_miller:sudo:1.6.9
* cpe:/a:todd_miller:sudo:1.6
* cpe:/a:todd_miller:sudo:1.6.1
* cpe:/a:todd_miller:sudo:1.6.2
* cpe:/a:todd_miller:sudo:1.6.3
* cpe:/a:todd_miller:sudo:1.3.5
+ Configuration 2
+ OR
* cpe:/a:todd_miller:sudo:1.8.0
* cpe:/a:todd_miller:sudo:1.8.1
* cpe:/a:todd_miller:sudo:1.8.1p1
* cpe:/a:todd_miller:sudo:1.8.1p2
* cpe:/a:todd_miller:sudo:1.8.2
* cpe:/a:todd_miller:sudo:1.8.3
* cpe:/a:todd_miller:sudo:1.8.3p1
* cpe:/a:todd_miller:sudo:1.8.3p2
* cpe:/a:todd_miller:sudo:1.8.4
* cpe:/a:todd_miller:sudo:1.8.4p1
* cpe:/a:todd_miller:sudo:1.8.4p2
* cpe:/a:todd_miller:sudo:1.8.4p3
* cpe:/a:todd_miller:sudo:1.8.4p4
* cpe:/a:todd_miller:sudo:1.8.4p5
* cpe:/a:todd_miller:sudo:1.8.5

* Denotes Vulnerable Software
Changes related to vulnerability configurations

Technical Details

Vulnerability Type (View All)
  • Permissions, Privileges, and Access Control (CWE-264)

Change History 1 change record found - show changes