Headline
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:
- Contact the etcd security committee
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- GitHub Advisory Database
- GitHub Reviewed
- 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