CVE-2019-3785: Cloud Controller provides signed URL with write authorization to read only user

Severity

Medium

Vendor

Cloud Foundry Foundation

Affected Cloud Foundry Products and Versions

• CAPI
  • All versions prior to 1.78.0

Description

Cloud Foundry Cloud Controller, versions prior to 1.78.0, contain an endpoint with improper authorization. A remote authenticated malicious user with read permissions can request package information and receive a signed bit-service url that grants the user write permissions to the bit-service.

Mitigation

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

• CAPI
  • Upgrade All versions to 1.78.0 or greater

History

2019-03-12: Initial vulnerability report published.