CVE-2020-12797 Incorrect Permission Assignment for Critical Resource in Hashicorp Consul

What is CVE-2020-12797?

CVE-2020-12797 is a medium-severity missing authorization vulnerability in n/a, published on 11 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

HashiCorp Consul and Consul Enterprise failed to enforce changes to legacy ACL token rules due to non-propagation to secondary data centers. Introduced in 1.4.0, fixed in 1.6.6 and 1.7.4.

Which versions are affected by CVE-2020-12797?

6 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-2020-12797?

Upgrade github.com/hashicorp/consul to a fixed version for your release line: 1.6.6 or 1.7.4.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2020-12797 being exploited?

There is no known exploitation of CVE-2020-12797 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-2021-37219 HashiCorp Consul Privilege Escalation Vulnerability 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

Sources

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

Also known as BIT-consul-2020-12797, DEBIAN-CVE-2020-12797, GHSA-hwqm-x785-qh8p, GO-2022-0847, UBUNTU-CVE-2020-12797.