All Vulnerability Reports

USN-4144-1: Linux kernel vulnerabilities


Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected
  • Canonical Ubuntu 16.04
Description

It was discovered that the XFS file system in the Linux kernel did not properly handle mount failures in some situations. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code (CVE-2018-20976). Benjamin Moody discovered that the XFS file system in the Linux kernel did not properly handle an error condition when out of disk quota. A local attacker could possibly use this to cause a denial of service (CVE-2019-15538). CVEs contained in this USN include: CVE-2018-20976, CVE-2019-15538

Affected Pivotal Products and Versions

Severity is medium unless otherwise noted.

Vulnerable Cloud Foundry components individually listed here. Impacted stemcells may be updated independently of upgrading Pivotal Application Service or PCF Isolation Segment.

  • Pivotal Application Service
    • 2.7.x versions prior to 2.7.2
    • 2.6.6 versions prior to 2.6.8
    • 2.5.x versions prior to 2.5.13
  • PCF Isolation Segment
    • 2.7.x versions prior to 2.7.2
    • 2.6.6 versions prior to 2.6.7
    • 2.5.x versions prior to 2.5.12
  • Pivotal Operations Manager
    • 2.7.x versions prior to 2.7.1
    • 2.6.x versions prior to 2.6.12
    • 2.5.x versions prior to 2.5.20
    • 2.4.x versions prior to 2.4.23
Mitigation

The Cloud Foundry security team recommends upgrading BOSH to the affected OSS components listed here if applicable. Upgrade Pivotal products that use earlier versions of CF components to new Pivotal releases using new versions linked above. On the Pivotal Network product page for each release, check the Depends On section and/or Release Notes for this information.

  • Pivotal Application Service
    • 2.7.2
    • 2.6.8
    • 2.5.13
  • PCF Isolation Segment
    • 2.7.2
    • 2.6.7
    • 2.5.12
  • Pivotal Operations Manager
    • 2.7.1
    • 2.6.12
    • 2.5.20
    • 2.4.23
References