Severity

Low

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 18.04

Description

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.

Affected Cloud Foundry Products and Versions

Severity is low unless otherwise noted.

• All versions of Cloud Foundry cflinuxfs3 prior to 0.13.0

Mitigation

OSS users are strongly encouraged to follow one of the mitigations below:

• The Cloud Foundry project recommends that Cloud Foundry deployments run with cflinuxfs3 version 0.13.0 or later.

References

• USN-3748-1
• CVE-2018-6557