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CVE-2013-2776

sudo 1.3.5 through 1.7.10p5 and 1.8.0 through 1.8.6p6, when running on systems without /proc or...

4.4 MediumFix available

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.

Exploit likelihood

0.37%Down 1.2 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 4.4

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.

Record
CVE-2013-2776
CVSS 2.0
4.4 MediumAV:L/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-264
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2013-2776
Updated
2026-11-02
EUVDEUVD-2013-2715 No score

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.

Record
EUVD-2013-2715
Updated
2026-11-03
GitHub AdvisoriesGHSA-crcj-xh9h-7wr8 No score

sudo 1.3.5 through 1.7.10p5 and 1.8.0 through 1.8.6p6, when running on systems without /proc or...

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.

Record
GHSA-crcj-xh9h-7wr8
Updated
2026-11-02
OSV No score

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.

Record
CVE-2013-2776
Updated
2026-11-02
OSVDEBIAN-CVE-2013-2776 No score

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.

Record
DEBIAN-CVE-2013-2776
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
sudo
Debian:12
 before 1.8.5p2-1+nmu1
1.8.5p2-1+nmu1
sudo
Debian:13
 before 1.8.5p2-1+nmu1
1.8.5p2-1+nmu1
sudo
Debian:14
 before 1.8.5p2-1+nmu1
1.8.5p2-1+nmu1
sudo
Debian:6.0
From an advisory covering 4 CVEs
 before 1.7.4p4-2.squeeze.4, plus listed versions
1.7.4p4-2.squeeze.11.7.4p4-2.squeeze.21.7.4p4-2.squeeze.3
1.7.4p4-2.squeeze.4
sudo
Red Hat:enterprise_linux:5::client
From an advisory covering 3 CVEs
 before 0:1.7.2p1-28.el5
0:1.7.2p1-28.el5
sudo-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 3 CVEs
 before 0:1.7.2p1-28.el5
0:1.7.2p1-28.el5
sudo
Red Hat:enterprise_linux:5::server
From an advisory covering 3 CVEs
 before 0:1.7.2p1-28.el5
0:1.7.2p1-28.el5
sudo-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 3 CVEs
 before 0:1.7.2p1-28.el5
0:1.7.2p1-28.el5
sudo
Red Hat:enterprise_linux:6::client
From an advisory covering 3 CVEs
 before 0:1.8.6p3-12.el6
0:1.8.6p3-12.el6
sudo-debuginfo
Red Hat:enterprise_linux:6::client
From an advisory covering 3 CVEs
 before 0:1.8.6p3-12.el6
0:1.8.6p3-12.el6
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Affected packages
PackageAffectedFixed
sudo-devel
Red Hat:enterprise_linux:6::client
From an advisory covering 3 CVEs
 before 0:1.8.6p3-12.el6
0:1.8.6p3-12.el6
sudo
Red Hat:enterprise_linux:6::computenode
From an advisory covering 3 CVEs
 before 0:1.8.6p3-12.el6
0:1.8.6p3-12.el6
sudo-debuginfo
Red Hat:enterprise_linux:6::computenode
From an advisory covering 3 CVEs
 before 0:1.8.6p3-12.el6
0:1.8.6p3-12.el6
sudo-devel
Red Hat:enterprise_linux:6::computenode
From an advisory covering 3 CVEs
 before 0:1.8.6p3-12.el6
0:1.8.6p3-12.el6
sudo
Red Hat:enterprise_linux:6::server
From an advisory covering 3 CVEs
 before 0:1.8.6p3-12.el6
0:1.8.6p3-12.el6
sudo-debuginfo
Red Hat:enterprise_linux:6::server
From an advisory covering 3 CVEs
 before 0:1.8.6p3-12.el6
0:1.8.6p3-12.el6
sudo-devel
Red Hat:enterprise_linux:6::server
From an advisory covering 3 CVEs
 before 0:1.8.6p3-12.el6
0:1.8.6p3-12.el6
sudo
Red Hat:enterprise_linux:6::workstation
From an advisory covering 3 CVEs
 before 0:1.8.6p3-12.el6
0:1.8.6p3-12.el6
sudo-debuginfo
Red Hat:enterprise_linux:6::workstation
From an advisory covering 3 CVEs
 before 0:1.8.6p3-12.el6
0:1.8.6p3-12.el6
sudo-devel
Red Hat:enterprise_linux:6::workstation
From an advisory covering 3 CVEs
 before 0:1.8.6p3-12.el6
0:1.8.6p3-12.el6

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2013-2776 is a medium vulnerability (CVSS 4.4) in Todd Miller Sudo, published March 9, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 31st percentile. Fixed in sudo 1.8.5p2-1+nmu1.

References

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