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GHSA-wr2v-9rpq-c35q: Etcd Gateway TLS authentication only applies to endpoints detected in DNS SRV records

Vulnerability type

Cryptography

Workarounds

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

Detail

When starting a gateway, TLS authentication will only be attempted on endpoints identified in DNS SRV records for a given domain, which occurs in the discoverEndpoints function. No authentication is performed against endpoints provided in the --endpoints flag. The auditors has noted that appropriate documentation of this validation functionality plus deprecation of this misleading functionality is an acceptable path forward.

References

Find out more on this vulnerability in the security audit report

For more information

If you have any questions or comments about this advisory:

ghsa
#vulnerability#git#pdf#auth#ssl

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  1. GitHub Advisory Database
  2. GitHub Reviewed
  3. CVE-2020-15136

Etcd Gateway TLS authentication only applies to endpoints detected in DNS SRV records

Moderate severity GitHub Reviewed Published Aug 5, 2020 in etcd-io/etcd • Updated Jan 31, 2024

Package

gomod go.etcd.io/etcd (Go)

Affected versions

>= 3.4.0-rc.0, <= 3.4.9

< 3.3.23

Patched versions

3.4.10

3.3.23

Description

Published to the GitHub Advisory Database

Jan 31, 2024

Last updated

Jan 31, 2024

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