CVE-2019-3779 Cloud Foundry Container Runtime allows a user to bypass security policy when talking to ETCD
Authenticated users can escalate privileges to ETCD by exploiting shared Certificate Authority trust between Kubernetes API and ETCD.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-3779?
CVE-2019-3779 is a high-severity vulnerability in Cloud Foundry Container Runtime (CFCR), published on 8 Mar 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Cloud Foundry Container Runtime, versions prior to 0.29.0, deploys Kubernetes clusters utilize the same CA (Certificate Authority) to sign and trust certs for ETCD as used by the Kubernetes API. This could allow a user authenticated with a cluster to request a signed certificate leveraging the Kubernetes CSR capability to obtain a credential that could escalate privilege access to ETCD.
Which versions are affected by CVE-2019-3779?
It affects 1 product.
Products include Cloudfoundry Container Runtime.
How do I fix CVE-2019-3779?
No fix has been published for CVE-2019-3779 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-3779 being exploited?
There is no known exploitation of CVE-2019-3779 in the wild and no public exploit code.
Other vulnerabilities in Cloud Foundry Container Runtime (CFCR)
Sources
Also known as GHSA-pw4q-58pr-v79g.