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Unscored USN-3748-1 1 CVE

base-files vulnerability

Published Aug 21, 2018 · Updated Feb 10, 2026

Ecosystem: Ubuntu

Summary

Sander Bos discovered that the MOTD update script incorrectly handled
temporary files. A local attacker could use this issue to cause a denial of
service, or possibly escalate privileges if kernel symlink restrictions
were disabled.

Fixed packages 1

ReleasePackageFixed in
Ubuntu · 18.04 LTS 18.04:LTS base-files 10.1ubuntu2.2

Vulnerabilities 1

  • Unscored —
    CVE-2018-6557

    Insecure temporary file use in base-files

    The MOTD update script in the base-files package in Ubuntu 18.04 LTS before 10.1ubuntu2.2, and Ubuntu 18.10 before 10.1ubuntu6 incorrectly handled temporary files. A local attacker could use this issue to cause a denial of service, or possibly escalate privil…

    Ubuntu base-files base-files Ubuntu

References

  • report
    https://ubuntu.com/security/CVE-2018-6557