USN-4759-1: GLib vulnerabilities

Severity

Medium

Vendor

Canonical Ubuntu

Description

Krzesimir Nowak discovered that GLib incorrectly handled certain large buffers. A remote attacker could use this issue to cause applications linked to GLib to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-27218)

Kevin Backhouse discovered that GLib incorrectly handled certain memory allocations. A remote attacker could use this issue to cause applications linked to GLib to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-27219)

CVEs contained in this USN include: CVE-2021-27218, CVE-2021-27219.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• cflinuxfs3
  • All versions prior to 0.228.0
• Xenial Stemcells
  • 456.x versions prior to 456.150
  • 621.x versions prior to 621.113
  • All other stemcells not listed.
• CF Deployment
  • All versions prior to 16.7.0

Mitigation

Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:

• cflinuxfs3
  • Upgrade all versions to 0.228.0 or greater
• Xenial Stemcells
  • Upgrade 456.x versions to 456.150 or greater
  • Upgrade 621.x versions to 621.113 or greater
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• CF Deployment
  • Upgrade all versions to 16.7.0 or greater

History

2021-03-22: Initial vulnerability report published.