USN-5395-2: networkd-dispatcher regression | Cloud Foundry

Severity

High

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 18.04

Description

USN-5395-1 fixed vulnerabilities in networkd-dispatcher. Unfortunately that update was incomplete and could introduce a regression. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that networkd-dispatcher incorrectly handled internal scripts. A local attacker could possibly use this issue to cause a race condition, escalate privileges and execute arbitrary code. (CVE-2022-29799, CVE-2022-29800) Update Instructions: Run sudo ua fix USN-5395-2 to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: networkd-dispatcher – 1.7-0ubuntu3.5 No subscription required

Affected Cloud Foundry Products and Versions

Severity is unknown unless otherwise noted.

• Bionic Stemcells
  • 1.x versions prior to 1.84
  • All other stemcells not listed.
• CF Deployment
  • All versions with Bionic Stemcells prior to 1.84

Mitigation

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

• Bionic Stemcells
  • Upgrade 1.x versions to 1.84 or greater
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• CF Deployment
  • For all versions, upgrade Bionic Stemcells to 1.84 or greater

References

• USN Notice

History

2022-05-26: Initial vulnerability report published.