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Affecting base-files package, versions <10.1ubuntu2.2

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Overview

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.

References

CVSS Score

7.0
low severity
  • Attack Vector
    Local
  • Attack Complexity
    High
  • Privileges Required
    Low
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    High
  • Integrity
    High
  • Availability
    High
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE
CVE-2018-6557
CWE
CWE-59
Snyk ID
SNYK-UBUNTU1804-BASEFILES-261368
Disclosed
21 Aug, 2018
Published
22 Aug, 2018