Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 14.04
• Canonical Ubuntu 16.04
• Canonical Ubuntu 18.04

Description

Aldy Hernandez discovered that libtirpc incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-4429)

It was discovered that libtirpc incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-14622)

It was discovered that libtirpc incorrectly handled certain strings. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-8779)

CVEs contained in this USN include: CVE-2016-4429, CVE-2016-4429, CVE-2017-8779, CVE-2018-14622

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• Cloud Foundry BOSH trusty-stemcells are vulnerable, including:
  • 3586.x versions prior to 3586.42
  • 3541.x versions prior to 3541.48
  • 3468.x versions prior to 3468.69
  • 3445.x versions prior to 3445.67
  • 3421.x versions prior to 3421.82
  • 3363.x versions prior to 3363.75
  • All other stemcells not listed.
• Cloud Foundry BOSH xenial-stemcells are vulnerable, including:
  • 97.x versions prior to 97.16
  • All other stemcells not listed.
• All versions of Cloud Foundry cflinuxfs3 prior to 0.20.0

Mitigation

Users of affected products are strongly encouraged to follow one of the mitigations below:

• The Cloud Foundry project recommends upgrading the following BOSH trusty-stemcells:
  • Upgrade 3586.x versions to 3586.42
  • Upgrade 3541.x versions to 3541.48
  • Upgrade 3468.x versions to 3468.69
  • Upgrade 3445.x versions to 3445.67
  • Upgrade 3421.x versions to 3421.82
  • Upgrade 3363.x versions to 3363.75
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• The Cloud Foundry project recommends upgrading the following BOSH xenial-stemcells:
  • Upgrade 97.x versions to 97.16
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• The Cloud Foundry project recommends that Cloud Foundry deployments run with cflinuxfs3 version 0.20.0 or later.

References

• USN-3759-1
• CVE-2016-4429
• CVE-2016-4429
• CVE-2017-8779
• CVE-2018-14622