CVE-2019-9764

Publication date 26 March 2019

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
consul	25.04 plucky	Not in release
	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	23.10 mantic	Not affected
	23.04 lunar	Not in release
	22.10 kinetic	Not affected
	22.04 LTS jammy	Not affected
	21.10 impish	Not affected
	21.04 hirsute	Not affected
	20.10 groovy	Not affected
	20.04 LTS focal	Not affected
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release

Notes

alexmurray

Upstream says this only affects 1.4.3 and is fixed in 1.4.4 but it is not clear if earlier versions were affected or not so leaving as needs-triage for bionic with version 0.6.4~dfsg-3

Severity score breakdown

Parameter	Value
Base score	7.4 · High
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	None
Vector	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N