USN-4738-1: OpenSSL vulnerabilities

24003

16 April 2021

16 April 2021

CLOSED

MEDIUM

CVE-2021-23840,CVE-2021-23841

Severity

Medium

Vendor

VMware Tanzu

Versions Affected

  • Canonical Ubuntu 16.04
  • Canonical Ubuntu 18.04

Description

Paul Kehrer discovered that OpenSSL incorrectly handled certain input lengths in EVP functions. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2021-23840)

Tavis Ormandy discovered that OpenSSL incorrectly handled parsing issuer fields. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. (CVE-2021-23841)

CVEs contained in this USN include: CVE-2021-23841, CVE-2021-23840

Affected VMware Products and Versions

Severity is medium unless otherwise noted.

Impacted stemcells may be updated independently of upgrading Tanzu Application Service or Isolation Segment.
  • Platform Automation Toolkit
    • 4.4.x versions prior to 4.4.21
    • 5.0.x versions prior to 5.0.15
  • Tanzu Greenplum for Kubernetes
    • All versions prior to 2.0.0
  • Isolation Segment
    • 2.7.x versions prior to 2.7.31, or later versions with Xenial Stemcells prior to 456.144
    • 2.8.x versions prior to 2.8.25, or later versions with Xenial Stemcells prior to 621.107
    • 2.9.x versions prior to 2.9.19, or later versions with Xenial Stemcells prior to 621.107
    • 2.10.x versions prior to 2.10.11, or later versions with Xenial Stemcells prior to 621.107
  • Operations Manager
    • 2.7.x versions prior to 2.7.30
    • 2.8.x versions prior to 2.8.16
    • 2.9.x versions prior to 2.9.18
    • 2.10.x versions prior to 2.10.8
  • VMware Tanzu Application Service for VMs
    • 2.7.x versions prior to 2.7.32, or later versions with Xenial Stemcells prior to 456.144
    • 2.8.x versions prior to 2.8.26, or later versions with Xenial Stemcells prior to 621.107
    • 2.9.x versions prior to 2.9.20, or later versions with Xenial Stemcells prior to 621.107
    • 2.10.x versions prior to 2.10.12, or later versions with Xenial Stemcells prior to 621.107
    • 2.11.x versions with Xenial Stemcells prior to 621.107

Mitigation

Users of affected products are strongly encouraged to follow the mitigation below. It is recommended to upgrade the affected Cloud Foundry components listed here if applicable. Upgrade VMware Tanzu products that use earlier versions of CF components to new Tanzu releases using new versions linked above. 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:
  • Platform Automation Toolkit
    • 4.4.21
    • 5.0.15
  • Tanzu Greenplum for Kubernetes
    • 2.0.0
  • Isolation Segment
    • 2.7.31, and upgrade Xenial Stemcells to 456.144 or greater
    • 2.8.25, and upgrade Xenial Stemcells to 621.107 or greater
    • 2.9.19, and upgrade Xenial Stemcells to 621.107 or greater
    • 2.10.11, and upgrade Xenial Stemcells to 621.107 or greater
  • Operations Manager
    • 2.7.30
    • 2.8.16
    • 2.9.18
    • 2.10.8
  • VMware Tanzu Application Service for VMs
    • 2.7.32, and upgrade Xenial Stemcells to 456.144 or greater
    • 2.8.26, and upgrade Xenial Stemcells to 621.107 or greater
    • 2.9.20, and upgrade Xenial Stemcells to 621.107 or greater
    • 2.10.12, and upgrade Xenial Stemcells to 621.107 or greater
    • 2.11.x: Upgrade Xenial Stemcells to 621.107 or greater

References

History

2021-04-16: Initial vulnerability report published.