CVE-2023-1297 Consul Cluster Peering can Result in Denial of Service

What is CVE-2023-1297?

CVE-2023-1297 is a medium-severity denial of service vulnerability in HashiCorp Consul, published on 2 Jun 2023. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Consul and Consul Enterprise's cluster peering implementation contained a flaw whereby a peer cluster with service of the same name as a local service could corrupt Consul state, resulting in denial of service. This vulnerability was resolved in Consul 1.14.5, and 1.15.3

Weakness: CWE-826

Which versions are affected by CVE-2023-1297?

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-2023-1297?

Upgrade github.com/hashicorp/consul to a fixed version for your release line: 1.14.5 or 1.15.3.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2023-1297 being exploited?

There is no known exploitation of CVE-2023-1297 in the wild and no public exploit code.

Other vulnerabilities in HashiCorp Consul

• 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-2023-1297, GHSA-c57c-7hrj-6q6v, GO-2023-1827, UBUNTU-CVE-2023-1297.