CVE-2018-1265: Diego does not properly sanitize file paths in tar/zip files

Severity

Critical

Vendor

Cloud Foundry Foundation

Affected Cloud Foundry Products and Versions

• You are using diego-release versions prior to 2.8.0
• You are using cf-deployment versions prior to v1.37.0

Description

Cloud Foundry Diego, release versions prior to 2.8.0, does not properly sanitize file paths in tar and zip files headers. A remote attacker with CF admin privileges can upload a malicious buildpack that will allow a complete takeover of a Diego Cell VM and access to all apps running on that Diego Cell.

Mitigation

Users of affected versions should apply the following mitigations or upgrades:

• Releases that have fixed this issue include:
  • diego-release version 2.8.0
  • cf-deployment version v1.37.0

Credit

This issue was responsibly reported by M. Hanselmann.

History

2018-06-05: Initial vulnerability report published.