CVE-2020-15136

Improper authentication in etcd

Description

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.

Categories

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.17%
Vendor Advisory fedoraproject.org
Affected: etcd-io etcd
Published at:
Updated at:

References

Link Tags
https://github.com/etcd-io/etcd/security/advisories/GHSA-wr2v-9rpq-c35q third party advisory
https://github.com/etcd-io/etcd/blob/master/Documentation/op-guide/gateway.md broken link
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6B6R43Y7M3DCHWK3L3UVGE2K6WWECMP/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-15136?
CVE-2020-15136 has been scored as a medium severity vulnerability.
How to fix CVE-2020-15136?
To fix CVE-2020-15136, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-15136 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-15136 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-15136?
CVE-2020-15136 affects etcd-io etcd.
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