Improper Input Validation Affecting sudo package, versions <1.7.4p4


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.63% (47th percentile)

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  • Snyk IDSNYK-ECHOLATEST-SUDO-19432087
  • published30 Aug 2026
  • disclosed4 Nov 2019

Introduced: 4 Nov 2019

CVE-2005-4890  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Echo:latest sudo to version 1.7.4p4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream sudo package and not the sudo package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1