There is a possible tty hijacking in shadow 4.x before 4.1.5 and sudo 1.x before 1.7.4 via "su - user -c program". The user session can be escaped to the parent session by using the TIOCSTI ioctl to push characters into the input buffer to be read by the next process.
Advisories
Source ID Title
EUVD EUVD EUVD-2005-4881 There is a possible tty hijacking in shadow 4.x before 4.1.5 and sudo 1.x before 1.7.4 via "su - user -c program". The user session can be escaped to the parent session by using the TIOCSTI ioctl to push characters into the input buffer to be read by the next process.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Sat, 12 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00159}

epss

{'score': 0.00163}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-08T00:01:23.403Z

Reserved: 2011-12-19T00:00:00

Link: CVE-2005-4890

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-11-04T19:15:10.130

Modified: 2024-11-21T00:05:25.703

Link: CVE-2005-4890

cve-icon Redhat

Severity : Important

Publid Date: 2004-07-26T00:00:00Z

Links: CVE-2005-4890 - Bugzilla

cve-icon OpenCVE Enrichment

No data.