CVE-2020-4062 Improper Access Control in Conjur OSS Helm Chart
Attackers with cluster access can read and write to the Conjur Postgres database due to an open port, enabling secret retrieval and privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-4062?
CVE-2020-4062 is a high-severity missing authorization vulnerability in CyberArk Conjur OSS Helm Chart, published on 22 Jun 2020. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
In Conjur OSS Helm Chart before 2.0.0, a recently identified critical vulnerability resulted in the installation of the Conjur Postgres database with an open port. This allows an attacker to gain full read & write access to the Conjur Postgres database, including escalating the attacker's privileges to assume full control. A malicious actor who knows the IP address and port number of the Postgres database and has access into the Kubernetes cluster where Conjur runs can gain full read & write access to the Postgres database. This enables the attacker to write a policy that allows full access to retrieve any secret. This Helm chart is a method to install Conjur OSS into a Kubernetes environment. Hence, the systems impacted are only Conjur OSS systems that were deployed using this chart. Other deployments including Docker and the CyberArk Dynamic Access Provider (DAP) are not affected. To remediate this vulnerability, clone the latest Helm Chart and follow the upgrade instructions. If you are not able to fully remediate this vulnerability immediately, you can mitigate some of the risk by making sure Conjur OSS is deployed on an isolated Kubernetes cluster or namespace. The term "isolated" refers to: - No other workloads besides Conjur OSS and its backend database are running in that Kubernetes cluster/namespace. - Kubernetes and helm access to the cluster/namespace is limited to security administrators via Role-Based Access Control (RBAC).
Weakness: CWE-284
Which versions are affected by CVE-2020-4062?
It affects 1 product.
Products include Cyberark Conjur Oss Helm Chart.
How do I fix CVE-2020-4062?
No fix has been published for CVE-2020-4062 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2020-4062 being exploited?
There is no known exploitation of CVE-2020-4062 in the wild and no public exploit code.
Sources
Also known as GHSA-mg2m-623j-wpxw.