CVE-2018-6557

HighCVSS 7.0/10Last modified Jun 17, 2026

Description

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 privileges if kernel symlink restrictions were disabled.

Metrics

CVSS 3.1 7.0/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-59

Affected software

No affected versions have been published.

Timeline

Published
Aug 21, 2018
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2018-6557: High severity, CVSS 7.0 | Vulnix