What’s Vulnerable › Vulnerabilities

CVE-2019-3786: BBR could run arbitrary scripts on deployment VMs

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-04-24 · updated 2026-06-17
• Weakness: CWE-269

Description

Cloud Foundry BOSH Backup and Restore CLI, all versions prior to 1.5.0, does not check the authenticity of backup scripts in BOSH. A remote authenticated malicious user can modify the metadata file of a Bosh Backup and Restore job to request extra backup files from different jobs upon restore. The exploited hooks in this metadata script were only maintained in the cfcr-etcd-release, so clusters deployed with the BBR job for etcd in this release are vulnerable.

Affected products

• Cloud Foundry BOSH Backup and Restore: before 1.5.0 — fixed in 1.5.0

How to fix

Upgrade to a fixed version: Cloud Foundry BOSH Backup and Restore 1.5.0. Check the vendor advisory for mitigations.

References

• https://www.cloudfoundry.org/blog/cve-2019-3786
• https://www.cloudfoundry.org/blog/cve-2019-3786

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