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USN-4376-1: OpenSSL vulnerabilities


Severity

Low

Vendor

Canonical Ubuntu

Versions Affected
  • Canonical Ubuntu 16.04
  • Canonical Ubuntu 18.04
Description

Cesar Pereida Garcia, Sohaib ul Hassan, Nicola Tuveri, Iaroslav Gridin, Alejandro Cabrera Aldaya, and Billy Brumley discovered that OpenSSL incorrectly handled ECDSA signatures. An attacker could possibly use this issue to perform a timing side-channel attack and recover private ECDSA keys. (CVE-2019-1547)

Matt Caswell discovered that OpenSSL incorrectly handled the random number generator (RNG). This may result in applications that use the fork() system call sharing the same RNG state between the parent and the child, contrary to expectations. This issue only affected Ubuntu 18.04 LTS and Ubuntu 19.10. (CVE-2019-1549)

Guido Vranken discovered that OpenSSL incorrectly performed the x86_64 Montgomery squaring procedure. While unlikely, a remote attacker could possibly use this issue to recover private keys. (CVE-2019-1551)

Bernd Edlinger discovered that OpenSSL incorrectly handled certain decryption functions. In certain scenarios, a remote attacker could possibly use this issue to perform a padding oracle attack and decrypt traffic. (CVE-2019-1563)

CVEs contained in this USN include: CVE-2019-1547, CVE-2019-1549, CVE-2019-1551, CVE-2019-1563

Affected VMware Products and Versions

Severity is low unless otherwise noted.

Vulnerable Cloud Foundry components individually listed here.

Impacted stemcells may be updated independently of upgrading Tanzu Application Service or Isolation Segment.

  • Isolation Segment
    • 2.7.x versions prior to 2.7.18
    • 2.8.x versions prior to 2.8.12
    • 2.9.x versions prior to 2.9.6
  • Operations Manager
    • 2.7.x versions prior to 2.7.19
    • 2.8.x versions prior to 2.8.10
    • 2.9.x versions prior to 2.9.4
  • Platform Automation Toolkit
    • 4.1.x versions prior to 4.1.18
    • 4.2.x versions prior to 4.2.13
    • 4.3.x versions prior to 4.3.9
  • Tanzu Greenplum for Kubernetes
    • All versions prior to 2.0.0
  • VMware Tanzu Application Service for VMs
    • 2.7.x versions prior to 2.7.18
    • 2.8.x versions prior to 2.8.12
    • 2.9.x versions prior to 2.9.6
Mitigation

The Cloud Foundry security team recommends upgrading the affected OSS 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:

  • Isolation Segment
    • 2.7.18
    • 2.8.12
    • 2.9.6
  • Operations Manager
    • 2.7.19
    • 2.8.10
    • 2.9.4
  • Platform Automation Toolkit
    • 4.1.18
    • 4.2.13
    • 4.3.9
  • Tanzu Greenplum for Kubernetes
    • 2.0.0
  • VMware Tanzu Application Service for VMs
    • 2.7.18
    • 2.8.12
    • 2.9.6
References
History

2020-05-28: Initial vulnerability report published.