CVE-2019-3786 BBR could run arbitrary scripts on deployment VMs
Authenticated attackers can execute arbitrary scripts on deployment VMs by manipulating BBR metadata, affecting Cloud Foundry BBR CLI users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-3786?
CVE-2019-3786 is a high-severity code injection vulnerability in Cloud Foundry BOSH Backup and Restore, published on 24 Apr 2019. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2019-3786?
It affects 1 product.
Products include Cloudfoundry Bosh Backup and Restore.
How do I fix CVE-2019-3786?
No fix has been published for CVE-2019-3786 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2019-3786 being exploited?
There is no known exploitation of CVE-2019-3786 in the wild and no public exploit code.
Sources
Also known as GHSA-xr6m-h5m8-p48r.