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OpenAdvisories
Unscored USN-4263-2 1 CVE

sudo vulnerability

Published Feb 5, 2020 · Updated Feb 10, 2026

Ecosystem: Ubuntu

Summary

USN-4263-1 fixed a vulnerability in Sudo. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

Joe Vennix discovered that Sudo incorrectly handled memory operations when
the pwfeedback option is enabled. A local attacker could possibly use this
issue to obtain unintended access to the administrator account.

Fixed packages 1

ReleasePackageFixed in
Ubuntu · Pro 14.04 LTS Pro:14.04:LTS sudo 1.8.9p5-1ubuntu1.5+esm3

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

  • report
    https://ubuntu.com/security/CVE-2019-18634