Severity

low

Vendor

VMware Tanzu

Versions Affected

• Canonical Ubuntu 16.04

Description

The potential for an out of bounds write due to a missing bounds check was discovered to impact the sgdisk utility of GPT fdisk. Exploitation requires the use of a maliciously formatted storage device and could cause sgdisk to crash as well as possibly allow for local privilege escalation.

CVEs contained in this USN include: CVE-2020-0256, CVE-2021-0308

Affected VMware Products and Versions

Severity is low unless otherwise noted.

• Isolation Segment
  • 2.7.x versions with Xenial Stemcells prior to 456.236
  • 2.8.x versions with Xenial Stemcells prior to 621.208
  • 2.9.x versions with Xenial Stemcells prior to 621.208
  • 2.10.x versions with Xenial Stemcells prior to 621.208
  • 2.11.x versions with Xenial Stemcells prior to 621.208
  • 2.12.x versions with Xenial Stemcells prior to 621.208
• Operations Manager
  • 2.9.x versions prior to 2.9.30
  • 2.10.x versions prior to 2.10.29
• VMware Tanzu Application Service for VMs
  • 2.7.x versions with Xenial Stemcells prior to 456.236
  • 2.8.x versions with Xenial Stemcells prior to 621.208
  • 2.9.x versions with Xenial Stemcells prior to 621.208
  • 2.10.x versions with Xenial Stemcells prior to 621.208
  • 2.11.x versions with Xenial Stemcells prior to 621.208
  • 2.12.x versions with Xenial Stemcells prior to 621.208

Mitigation

Users of affected products are strongly encouraged to follow the mitigation below. On the Tanzu Network product page for each release, check the Depends On section and/or Release Notes for this information. Releases that have fixed this issue include:

• Isolation Segment
  • 2.7.x: Upgrade Xenial Stemcells to 456.236 or greater
  • 2.8.x: Upgrade Xenial Stemcells to 621.208 or greater
  • 2.9.x: Upgrade Xenial Stemcells to 621.208 or greater
  • 2.10.x: Upgrade Xenial Stemcells to 621.208 or greater
  • 2.11.x: Upgrade Xenial Stemcells to 621.208 or greater
  • 2.12.x: Upgrade Xenial Stemcells to 621.208 or greater
• Operations Manager
  • 2.9.30
  • 2.10.29
• VMware Tanzu Application Service for VMs
  • 2.7.x: Upgrade Xenial Stemcells to 456.236 or greater
  • 2.8.x: Upgrade Xenial Stemcells to 621.208 or greater
  • 2.9.x: Upgrade Xenial Stemcells to 621.208 or greater
  • 2.10.x: Upgrade Xenial Stemcells to 621.208 or greater
  • 2.11.x: Upgrade Xenial Stemcells to 621.208 or greater
  • 2.12.x: Upgrade Xenial Stemcells to 621.208 or greater

References

• https://ubuntu.com/security/CVE-2020-0256
• https://ubuntu.com/security/CVE-2021-0308
• https://ubuntu.com/security/notices/USN-5262-1
• https://cloudfoundry.org/blog/usn-5262-1

History

2022-03-17: Initial vulnerability report published.