sudo: bypass of tty_tickets constraints
Published Apr 8, 2013
4.4
MEDIUMCVSS 2.0
EPSS 0.37%
Description
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.
Affected products
No data.
Configuration 1
- 1.3.5
- 1.6
- 1.6.1
- 1.6.2
- 1.6.2p3
- 1.6.3
- 1.6.3_p7
- 1.6.4
- 1.6.4p2
- 1.6.5
- 1.6.6
- 1.6.7
- 1.6.7p5
- 1.6.8
- 1.6.8p12
- 1.6.9
- 1.6.9p20
- 1.6.9p21
- 1.6.9p22
- 1.6.9p23
- 1.7.0
- 1.7.1
- 1.7.2
- 1.7.2p1
- 1.7.2p2
- 1.7.2p3
- 1.7.2p4
- 1.7.2p5
- 1.7.2p6
- 1.7.2p7
- 1.7.3b1
- 1.7.4
- 1.7.4p1
- 1.7.4p2
- 1.7.4p3
- 1.7.4p4
- 1.7.4p5
- 1.7.4p6
- 1.7.5
- 1.7.6
- 1.7.6p1
- 1.7.6p2
- 1.7.7
- 1.7.8
- 1.7.8p1
- 1.7.8p2
- 1.7.9
- 1.7.9p1
- 1.7.10
Running on/with
- 1.7.10p1
- 1.7.10p2
- 1.7.10p3
Configuration 3
- 1.8.0
- 1.8.1
- 1.8.1p1
- 1.8.1p2
- 1.8.2
- 1.8.3
- 1.8.3p1
- 1.8.3p2
- 1.8.4
- 1.8.4p1
- 1.8.4p2
- 1.8.4p3
- 1.8.4p4
- 1.8.4p5
- 1.8.5
Running on/with
- 1.7.10p4
- 1.7.10p5
- 1.8.6
- 1.8.6p1
- 1.8.6p2
- 1.8.6p3
- 1.8.6p4
- 1.8.6p5
No data.
Red Hat Enterprise Linux 5
sudo-0:1.7.2p1-28.el5
Fixed · RHSA-2013:1353
Red Hat Enterprise Linux 6
sudo-0:1.8.6p3-12.el6
Fixed · RHSA-2013:1701
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | sudo-0:1.7.2p1-28.el5 | Fixed | RHSA-2013:1353 |
| Red Hat Enterprise Linux 6 | sudo-0:1.8.6p3-12.el6 | Fixed | RHSA-2013:1701 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.37% (0.00370) | 28.57th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.37% (0.00373) | 28.90th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.05% (0.00050) | 12.68th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00044) | 11.89th | v3 (v2023.03.01) |
| Jul 2, 2024 | 0.04% (0.00044) | 10.25th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 8.24th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.55% (0.01547) | 74.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.55% (0.01547) | 72.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.55% (0.01547) | 51.82th | v2 (v2022.01.01) |
References (21)
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=701839 x_refsource_MISC
- http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html vendor-advisoryx_refsource_APPLE
- http://rhn.redhat.com/errata/RHSA-2013-1353.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2013-1701.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2013/dsa-2642 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2013/02/27/31 mailing-listx_refsource_MLIST
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/58207 vdb-entryx_refsource_BID
- http://www.securityfocus.com/bid/62741 vdb-entryx_refsource_BID
- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2013&m=slackware-security.517440 vendor-advisoryx_refsource_SLACKWARE
- http://www.sudo.ws/repos/sudo/rev/049a12a5cc14 x_refsource_CONFIRMVendor Advisory
- http://www.sudo.ws/repos/sudo/rev/0c0283d1fafa x_refsource_CONFIRMVendor Advisory
- http://www.sudo.ws/sudo/alerts/tty_tickets.html x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2013-2776 Vendor Advisory
- https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/87023 x_refsource_MISC
- https://bugzilla.redhat.com/show_bug.cgi?id=916365 x_refsource_MISC
- https://bugzilla.redhat.com/show_bug.cgi?id=949751 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/82453 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2013-2776
- https://support.apple.com/kb/HT205031 x_refsource_CONFIRMVendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2013-2776
Change history (0)
No recorded changes yet.