HIGH
HashiCorp Consul 1.4.3 lacks server hostname verification for agent-to-agent TLS communication
Published Mar 26, 2019
7.4
HIGHCVSS 3.0
EPSS 0.61%
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.4 HIGH NVD
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact None
5.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.61% 0.00610
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.00610
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.61% (0.00610) | 47.27th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.61% (0.00610) | 47.83th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.29% (0.00292) | 69.44th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.29% (0.00292) | 68.24th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.29% (0.00292) | 64.21th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 9.03% (0.09029) | 86.86th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.84% (0.01840) | 47.83th | v1 |
| Jan 6, 2022 | 1.84% (0.01840) | 47.32th | v1 |
| Jan 5, 2022 | 0.42% (0.00416) | 26.65th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.42% (0.00416) | 0.00th | v1 |
Weaknesses (1)
References (4)
- https://github.com/advisories/GHSA-q7fx-wm2p-qfj8 Advisory
- https://github.com/hashicorp/consul/commit/7e11dd82aa8dae505b7307adcb68c9d3194b3b40
- https://github.com/hashicorp/consul/issues/5519 x_refsource_MISCExploitThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-9764
| Link | Providers | Tags |
|---|---|---|
| https://github.com/advisories/GHSA-q7fx-wm2p-qfj8 | Advisory | |
| https://github.com/hashicorp/consul/commit/7e11dd82aa8dae505b7307adcb68c9d3194b3b40 | ||
| https://github.com/hashicorp/consul/issues/5519 | x_refsource_MISCExploitThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-9764 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Mar 26, 2019
Updated Aug 4, 2024
Reserved Mar 14, 2019
Link CVE-2019-9764
CISA Vulnrichment
GHSA-Q7FX-WM2P-QFJ8 Updated n/a