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.
CVSS 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| nvd@nist.gov | 7.0 | HIGH | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | 1.0 | 5.9 |
CVSS 2.0
Severity: MEDIUM
Problem Type: CWE-59,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| canonical | ubuntu_linux | 18.10 |
| canonical | ubuntu_linux | 18.04 |
| base-files_project | base-files | 10.1ubuntu2.2 |