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CVE-2023-2816

21
FAUCET Score

CVE-2023-2816 is a medium-severity vulnerability affecting HashiCorp Consul and Consul Enterprise, where users with service:write permissions can exploit Envoy extensions to patch remote proxy instances. This allows unauthorized modification of proxies targeting services, even without direct permission to alter those services. The CVSS score is 6.5, indicating a network-based attack with low complexity and authentication required, leading to a high impact on integrity. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.15.0, < 1.15.3CPE matchmatch criteria
cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*
>= 1.15.0, < 1.15.3CPE matchmatch criteria
cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.7HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
5.8
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.58%
Probability of exploitation in next 30 days
EPSS Percentile
44.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0059 is in the 54th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

gopatch availablevia ghsa
Product: github.com/hashicorp/consulFixed in: 1.15.3
microsoftpatch availablevia msrc
Product: cbl2 telegraf 1.28.5-1 on CBL Mariner 2.0Fixed in: 1.28.5-1
microsoftpatch availablevia msrc
Product: azl3 telegraf 1.29.4-1 on Azure Linux 3.0Fixed in: 1.29.4-1
microsoftpatch availablevia msrc
Product: azl3 telegraf 1.27.3-4 on Azure Linux 3.0Fixed in: 1.29.4-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 1.28.5-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 1.28.5-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 x64Fixed in: 1.29.4-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 ARMFixed in: 1.29.4-1

Vendor Advisories (3)

microsoft2024-Jun/CVE-2023-2816

CVE-2023-2816

Jun 11, 2024
microsoft2023-Jun/CVE-2023-2816Moderate

Consul Envoy Extension Downsteam Proxy Configuration By Upstream Service Owner

Jun 13, 2023
goGHSA-rqjq-ww83-wv5chigh

Hashicorp Consul allows user with service:write permissions to patch remote proxy instances

Jun 3, 2023

References

discuss.hashicorp.com / t/hcsec-2023-16-consul-envoy-extension-downstream-proxy-configuration-by-upstream-service-owner/54525
Vendor Advisory