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Security Advisories: GSA_kwCzR0hTQS1qODZ2LTJ2anItZmc4Zs4AA5Cm

Etcd Gateway TLS endpoint validation only confirms TCP reachability

Vulnerability type



Refer to the gateway documentation. The vulnerability was spotted due to unclear documentation of how the gateway handles endpoints validation.


Secure endpoint validation is performed by the etcd gateway start command when the --discovery-srv flag is enabled. However, as currently implemented, it only validates TCP reachability, effectively allowing connections to an endpoint that doesn't accept TLS connections through the HTTPS URL. The auditors has noted that appropriate documentation of this validation functionality plus deprecation of this misleading functionality is an acceptable path forward.


Find out more on this vulnerability in the security audit report

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Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 27 days ago
Updated: 27 days ago

Identifiers: GHSA-j86v-2vjr-fg8f

Affected Packages
Versions: < 3.3.23, >= 3.4.0-rc.0, <= 3.4.9
Fixed in: 3.3.23, 3.4.10