CVE-2005-4890

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.

• CWE-20

• http://www.openwall.com/lists/oss-security/2012/11/06/8Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2013/05/20/3Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2013/11/28/10Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2013/11/29/5Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2014/10/20/9Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2014/10/21/1Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2014/12/15/5Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2016/02/25/6Exploit, Mailing List, Third Party Advisory
• https://access.redhat.com/security/cve/cve-2005-4890Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2005-4890Issue Tracking, Third Party Advisory
• https://security-tracker.debian.org/tracker/CVE-2005-4890Third Party Advisory
• http://www.openwall.com/lists/oss-security/2012/11/06/8Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2013/05/20/3Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2013/11/28/10Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2013/11/29/5Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2014/10/20/9Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2014/10/21/1Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2014/12/15/5Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2016/02/25/6Exploit, Mailing List, Third Party Advisory
• https://access.redhat.com/security/cve/cve-2005-4890Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2005-4890Issue Tracking, Third Party Advisory
• https://security-tracker.debian.org/tracker/CVE-2005-4890Third Party Advisory

Published

Nov 4, 2019

Last Modified

Jun 16, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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