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Security Advisories: GSA_kwCzR0hTQS13cjJ2LTlycHEtYzM1cc4AA49D

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:

Permalink: https://github.com/advisories/GHSA-wr2v-9rpq-c35q
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS13cjJ2LTlycHEtYzM1cc4AA49D
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 3 months ago
Updated: 3 months ago


CVSS Score: 6.5
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

Identifiers: GHSA-wr2v-9rpq-c35q, CVE-2020-15136
References: Repository: https://github.com/etcd-io/etcd
Blast Radius: 29.9

Affected Packages

go:go.etcd.io/etcd
Dependent packages: 6,929
Dependent repositories: 39,452
Downloads:
Affected Version Ranges: < 3.3.23, >= 3.4.0-rc.0, <= 3.4.9
Fixed in: 3.3.23, 3.4.10
All affected versions: 0.1.0, 0.1.1, 0.1.2, 0.2.0, 0.3.0, 0.4.0, 0.4.1, 0.4.2, 0.4.3, 0.4.4, 0.4.5, 0.4.6, 0.4.7, 0.4.8, 0.4.9, 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.0.7, 2.0.8, 2.0.9, 2.0.10, 2.0.11, 2.0.12, 2.0.13, 2.1.0, 2.1.1, 2.1.2, 2.1.3, 2.2.0, 2.2.1, 2.2.2, 2.2.3, 2.2.4, 2.2.5, 2.3.0, 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.3.6, 2.3.7, 2.3.8, 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5, 3.0.6, 3.0.7, 3.0.8, 3.0.9, 3.0.10, 3.0.11, 3.0.12, 3.0.13, 3.0.14, 3.0.15, 3.0.16, 3.0.17, 3.1.0, 3.1.1, 3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.1.6, 3.1.7, 3.1.8, 3.1.9, 3.1.10, 3.1.11, 3.1.12, 3.1.13, 3.1.14, 3.1.15, 3.1.16, 3.1.17, 3.1.18, 3.1.19, 3.1.20, 3.2.0, 3.2.1, 3.2.2, 3.2.3, 3.2.4, 3.2.5, 3.2.6, 3.2.7, 3.2.8, 3.2.9, 3.2.10, 3.2.11, 3.2.12, 3.2.13, 3.2.14, 3.2.15, 3.2.16, 3.2.17, 3.2.18, 3.2.19, 3.2.20, 3.2.21, 3.2.22, 3.2.23, 3.2.24, 3.2.25, 3.2.26, 3.2.27, 3.2.28, 3.2.29, 3.2.30, 3.2.31, 3.2.32, 3.3.0, 3.3.1, 3.3.2, 3.3.3, 3.3.4, 3.3.5, 3.3.6, 3.3.7, 3.3.8, 3.3.9, 3.3.10, 3.3.11, 3.3.12, 3.3.13, 3.3.15, 3.3.16, 3.3.17, 3.3.18, 3.3.19, 3.3.20, 3.3.21, 3.3.22
All unaffected versions: 3.3.24, 3.3.25, 3.3.26, 3.3.27