SB2020020509 - Multiple vulnerabilities in HashiCorp Nomad and Nomad Enterprise

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Resource exhaustion (CVE-ID: CVE-2020-7218)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to unbounded resource usage via HTTP and RPC services. A remote attacker can trigger resource exhaustion and crash the target server.

2) Improper Certificate Validation (CVE-ID: CVE-2020-7956)

The vulnerability allows a remote attacker to perform a man-in-the-middle (MiTM) attack.

The vulnerability exists due to the affected software incorrectly validate role/region associated with TLS certificates used for mTLS RPC. A remote attacker can supply a specially crafted TLS certificate, perform a man-in-the-middle attack and escalate privileges on the target system.

Remediation

Install update from vendor's website.

References

• https://github.com/hashicorp/nomad/issues/7002
• https://www.hashicorp.com/blog/category/nomad/
• https://github.com/hashicorp/nomad/issues/7003