CVE-2020-25864 HashiCorp Consul Cross-site Scripting vulnerability

What is CVE-2020-25864?

CVE-2020-25864 is a medium-severity cross-site scripting vulnerability in n/a, published on 20 Apr 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

HashiCorp Consul and Consul Enterprise up to version 1.9.4 key-value (KV) raw mode was vulnerable to cross-site scripting. Fixed in 1.9.5, 1.8.10 and 1.7.14.

Weakness: CWE-79

Which versions are affected by CVE-2020-25864?

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-2020-25864?

Upgrade github.com/hashicorp/consul to a fixed version for your release line: 1.7.14, 1.8.10 or 1.9.5.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2020-25864 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-25864 exists.

Public exploit code: 1 Nuclei template.

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-2020-25864, DEBIAN-CVE-2020-25864, GHSA-8xmx-h8rq-h94j, GO-2023-1851, UBUNTU-CVE-2020-25864.