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 the sysctl function with the tty_tickets…
- 4.4MediumCVSS base score
- 0.37%Exploitation in 30 daysEPSS · top 69% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By mitre
Published
- 11 years later
· 11 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.4 | AV:L/AC:M/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 0.37% · top 69% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.4.
Affected products
n/a
- affected n/a
References
17
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.sudo.ws/repos/sudo/rev/049a12a5cc14 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 58207 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=701839 (opens in a new tab)x_refsource_MISCx_transferred
- RHSA-2013:1701 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- DSA-2642 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- [oss-security] 20130227 Re: CVE request: potential bypass of sudo tty_tickets constraints (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://www.sudo.ws/repos/sudo/rev/0c0283d1fafa (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.sudo.ws/sudo/alerts/tty_tickets.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- APPLE-SA-2015-08-13-2 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
- SSA:2013-065-01 (opens in a new tab)vendor-advisoryx_refsource_SLACKWAREx_transferred
- https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/87023 (opens in a new tab)x_refsource_MISCx_transferred
- 62741 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- RHSA-2013:1353 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://support.apple.com/kb/HT205031 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=916365 (opens in a new tab)x_refsource_MISCx_transferred
- sudo-ttytickets-sec-bypass(82453) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2013-2715 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2013-2776)Record last updated .