High severity · published Mar 26, 2019
CVE-2019-9764
HashiCorp Consul 1.4.3 lacks server hostname verification for agent-to-agent TLS communication
7.4
CVSS
0.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Consul · Hashicorp
1.4.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-9764
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-9764
Exploit
https://github.com/hashicorp/consul/issues/5519
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