CVE-2020-15136 — Vulnetix

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CVE-2020-15136 PUBLISHED

In ectd before versions 3.4.10 and 3.3.23, gateway TLS authentication is only applied to endpoints detected in DNS SRV records. 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. This has been fixed in versions 3.4.10 and 3.3.23 with improved documentation and deprecation of the functionality.

EPSS 0.31% · 53.8th percentile

Risk Scores

EPSS Score

0.31%

53.8th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:Pro:20.04:LTS	etcd	3.2.26+dfsg-3, 3.2.26+dfsg-4, 3.2.26+dfsg-6
Ubuntu:25.10	etcd	0, 3.5.16-4
Ubuntu:Pro:24.04:LTS	etcd	3.4.30-1ubuntu0.24.04.3+esm1, 3.4.30-1ubuntu0.24.04.3, 3.4.30-1ubuntu0.24.04.2+esm1
Ubuntu:Pro:18.04:LTS	etcd	3.2.17+dfsg-1ubuntu0.1+esm2, 0, 3.1.0-1
Ubuntu:16.04:LTS	etcd	2.2.0+dfsg-2, 0, 2.2.5+dfsg-1ubuntu1
Ubuntu:Pro:22.04:LTS	etcd	3.3.25+dfsg-7ubuntu0.22.04.1, 3.3.25+dfsg-7ubuntu0.22.04.1+esm1, 3.3.25+dfsg-7ubuntu0.22.04.2

Timeline

Aug 6, 2020 CVE Published
Apr 14, 2021 EPSS Score
Jun 22, 2021 EPSS Score
Aug 23, 2021 EPSS Score
Oct 24, 2021 EPSS Score
Jan 6, 2022 EPSS Score
Feb 4, 2022 EPSS Score
Feb 25, 2022 EPSS Score
Apr 1, 2022 EPSS Score
Apr 28, 2022 EPSS Score
Jun 29, 2022 EPSS Score
Aug 31, 2022 EPSS Score

References

https://ubuntu.com/security/CVE-2020-15136 third-party-advisory
https://github.com/etcd-io/etcd/blob/master/Documentation/op-guide/gateway.md third-party-advisory
https://github.com/etcd-io/etcd/security/advisories/GHSA-wr2v-9rpq-c35q third-party-advisory
https://www.cve.org/CVERecord?id=CVE-2020-15136 third-party-advisory

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