USN-4360-2: json-c regression

Severity

Medium

Vendor

Canonical Ubuntu

Description

USN-4360-1 fixed a vulnerability in json-c. The security fix introduced a memory leak in some scenarios. This update reverts the security fix pending further investigation.

We apologize for the inconvenience.

Original advisory details:

It was discovered that json-c incorrectly handled certain JSON files. An attacker could possibly use this issue to execute arbitrary code.

CVEs contained in this USN include: CVE-2020-12762.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• cflinuxfs3
  • All versions prior to 0.183.0
• Xenial Stemcells
  • 170.x versions prior to 170.220
  • 250.x versions prior to 250.199
  • 315.x versions prior to 315.184
  • 456.x versions prior to 456.113
  • 621.x versions prior to 621.75
  • All other stemcells not listed.
• CF Deployment
  • All versions prior to v13.5.0

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 0.183.0 or greater
• Xenial Stemcells
  • Upgrade 170.x versions to 170.220 or greater
  • Upgrade 250.x versions to 250.199 or greater
  • Upgrade 315.x versions to 315.184 or greater
  • Upgrade 456.x versions to 456.113 or greater
  • Upgrade 621.x versions to 621.75 or greater
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• CF Deployment
  • Upgrade All versions to v13.5.0 or greater

History

2020-05-15: Initial vulnerability report published.