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OpenAdvisories
High ALAS2-2020-1404 1 CVE

Important: sudo security update (Amazon Linux 2)

Published Mar 16, 2020 · Updated Mar 18, 2020

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2019-18634: In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo process. (pwfeedback is a default setting in Linux Mint and elementary OS; however, it is NOT the default for upstream and many other packages, and would exist only if enabled by an administrator.) The attacker needs to deliver a long string to the stdin of getln() in tgetpass.c. 1796944: CVE-2019-18634 sudo: Stack based buffer overflow when pwfeedback is enabled

Fixed packages 3

ReleasePackageFixed in
Amazon Linux · 2 sudo 0:1.8.23-4.amzn2.2
Amazon Linux · 2 sudo-debuginfo 0:1.8.23-4.amzn2.2
Amazon Linux · 2 sudo-devel 0:1.8.23-4.amzn2.2

Vulnerabilities 1

  • Unscored —
    CVE-2019-18634 Public exploit EPSS 19%

    In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the…

    sudo sudo sudo Debian Ubuntu Alpine

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2019-18634.html