CVE-2021-37219 HashiCorp Consul Privilege Escalation Vulnerability

What is CVE-2021-37219?

CVE-2021-37219 is a high-severity vulnerability in n/a, published on 7 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

HashiCorp Consul and Consul Enterprise 1.10.1 Raft RPC layer allows non-server agents with a valid certificate signed by the same CA to access server-only functionality, enabling privilege escalation. Fixed in 1.8.15, 1.9.9 and 1.10.2.

Weakness: CWE-295

Which versions are affected by CVE-2021-37219?

8 open source packages ship an affected version, including github.com/hashicorp/consul and consul. It affects 1 product.

Products include Hashicorp Consul.

How do I fix CVE-2021-37219?

Upgrade github.com/hashicorp/consul to a fixed version for your release line: 1.8.15, 1.9.9 or 1.10.2.

Is CVE-2021-37219 being exploited?

There is no known exploitation of CVE-2021-37219 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2021-41805 Privilege escalation in n/a High 8.8
• CVE-2023-2816 Consul Envoy Extension Downsteam Proxy Configuration By Upstream Service Owner High 8.7
• CVE-2024-10006 Consul L7 Intentions Vulnerable To Headers Bypass High 8.3
• CVE-2024-10005 Consul L7 Intentions Vulnerable To URL Path Bypass High 8.1
• CVE-2019-8336 HashiCorp Consul Access Restriction Bypass High 8.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-consul-2021-37219, DEBIAN-CVE-2021-37219, GHSA-ccw8-7688-vqx4, GO-2022-0593, UBUNTU-CVE-2021-37219.