USN-4591-1: Linux kernel vulnerabilities | Cloud Foundry

Severity

High

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 16.04

Description

Andy Nguyen discovered that the Bluetooth L2CAP implementation in the Linux kernel contained a type-confusion error. A physically proximate remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-12351)

Andy Nguyen discovered that the Bluetooth A2MP implementation in the Linux kernel did not properly initialize memory in some situations. A physically proximate remote attacker could use this to expose sensitive information (kernel memory). (CVE-2020-12352)

CVEs contained in this USN include: CVE-2020-12351, CVE-2020-12352.

Affected Cloud Foundry Products and Versions

Severity is high unless otherwise noted.

• Xenial Stemcells
  • 315.x versions prior to 315.198
  • 456.x versions prior to 456.125
  • 621.x versions prior to 621.89
  • All other stemcells not listed.

Mitigation

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

• Xenial Stemcells
  • Upgrade 315.x versions to 315.198 or greater
  • Upgrade 456.x versions to 456.125 or greater
  • Upgrade 621.x versions to 621.89 or greater
  • All other stemcells should be upgraded to the latest version available on bosh.io.

References

• USN Notice
• CVE-2020-12351
• CVE-2020-12352

History

2020-11-20: Initial vulnerability report published.