Severity

Medium

Vendor

VMware Tanzu

Versions Affected

• Canonical Ubuntu 18.04

Description

Jon Franklin and Pawel Wieczorkiewicz discovered that DHCP incorrectly handled lease file parsing. A remote attacker could possibly use this issue to cause DHCP to crash, resulting in a denial of service.

CVEs contained in this USN include: CVE-2021-25217

Affected VMware Products and Versions

Severity is medium unless otherwise noted.

• Isolation Segment
  • 2.7.x versions prior to 2.7.33
  • 2.8.x versions prior to 2.8.27
  • 2.9.x versions prior to 2.9.21
  • 2.10.x versions prior to 2.10.13
  • 2.11.x versions prior to 2.11.3
• VMware Tanzu Application Service for VMs
  • 2.7.x versions prior to 2.7.34
  • 2.8.x versions prior to 2.8.28
  • 2.9.x versions prior to 2.9.22
  • 2.10.x versions prior to 2.10.14
  • 2.11.x versions prior to 2.11.3

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
  • 2.7.33
  • 2.8.27
  • 2.9.21
  • 2.10.13
  • 2.11.3
• VMware Tanzu Application Service for VMs
  • 2.7.34
  • 2.8.28
  • 2.9.22
  • 2.10.14
  • 2.11.3

References

• https://people.canonical.com/~ubuntu-security/cve/CVE-2021-25217
• https://ubuntu.com/security/notices/USN-4969-1
• https://cloudfoundry.org/blog/usn-4969-1

History

2021-09-13: Initial vulnerability report published.