#VU36038 Security Features in Consul - CVE-2019-9764
Published: March 26, 2019 / Updated: August 8, 2020
Vulnerability identifier: #VU36038
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-9764
CWE-ID: CWE-254
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Consul
Consul
Software vendor:
HashiCorp
HashiCorp
Description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
HashiCorp Consul 1.4.3 lacks server hostname verification for agent-to-agent TLS communication. In other words, the product behaves as if verify_server_hostname were set to false, even when it is actually set to true. This is fixed in 1.4.4.
Remediation
Install update from vendor's website.