CVEvulnerability

CVE-2018-6557

7.0 HIGH Published 2018-08-21 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-08-21
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.0 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
4.4 MEDIUM — AV:L/AC:M/Au:N/C:P/I:P/A:P
Weaknesses
CWE-59

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.

Affected configurations

• base-files project base-files 10.1ubuntu2.2 • canonical ubuntu linux 18.04 • canonical ubuntu linux 18.10

Related

Weakness · CWE (1)

  • CWE-59 Improper Link Resolution Before File Access weakness

References