CVE-2005-4890

moderate-risk
Published 2019-11-04

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.

Do I need to act?

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0.14% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (8)

Shadow

Affected Vendors

Debian Redhat Sudo Project

References (22)

Mailing List http://www.openwall.com/lists/oss-security/2012/11/06/8
Mailing List http://www.openwall.com/lists/oss-security/2013/05/20/3
Mailing List http://www.openwall.com/lists/oss-security/2013/11/28/10
Mailing List http://www.openwall.com/lists/oss-security/2013/11/29/5
Mailing List http://www.openwall.com/lists/oss-security/2014/10/20/9
Mailing List http://www.openwall.com/lists/oss-security/2014/10/21/1
Mailing List http://www.openwall.com/lists/oss-security/2014/12/15/5
Exploit http://www.openwall.com/lists/oss-security/2016/02/25/6
Third Party Advisory https://access.redhat.com/security/cve/cve-2005-4890
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2005-4890
Third Party Advisory https://security-tracker.debian.org/tracker/CVE-2005-4890
Mailing List http://www.openwall.com/lists/oss-security/2012/11/06/8
Mailing List http://www.openwall.com/lists/oss-security/2013/05/20/3
Mailing List http://www.openwall.com/lists/oss-security/2013/11/28/10
Mailing List http://www.openwall.com/lists/oss-security/2013/11/29/5
Mailing List http://www.openwall.com/lists/oss-security/2014/10/20/9
Mailing List http://www.openwall.com/lists/oss-security/2014/10/21/1
Mailing List http://www.openwall.com/lists/oss-security/2014/12/15/5
Exploit http://www.openwall.com/lists/oss-security/2016/02/25/6
Third Party Advisory https://access.redhat.com/security/cve/cve-2005-4890
and 2 more references
39
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 1/34 · Minimal
Exposure 14/34 · Moderate