Bug 1868878 (CVE-2020-15115)

Summary:	CVE-2020-15115 etcd: improper validation of passwords allow an attacker to guess or brute-force user's passwords
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abishop, bmontgom, dbecker, eparis, go-sig, gparvin, gscrivan, hvyas, jburrell, jcajka, jchaloup, jjoyce, jokerman, jramanat, jschluet, jweiser, kbasil, lacypret, lemenkov, lhh, lpeer, mburns, nstielau, puebele, sbatsche, sclewis, slinaber, sponnaga, stcannon, strigazi, tfister, thee
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	etcd 3.4.10, etcd 3.3.23	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in etcd, where it does not perform any password length validation, which allows for very short passwords, such as those with a length of one. This flaw allows an attacker to guess or brute-force users' passwords with little computational effort. The highest threat from this vulnerability is to confidentiality.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-03-17 19:52:10 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1869283, 1868879, 1870507, 1874767, 1874872, 1875653, 1875654, 1881178
Bug Blocks:	1868882

Description Dhananjay Arunesh 2020-08-14 06:19:55 UTC

In etcd before versions 3.3.23 and 3.4.10 does not perform any password length validation, which allows for very short passwords, such as those with a length of one. This may allow an attacker to guess or brute-force users' passwords with little computational effort.

References:
https://github.com/etcd-io/etcd/security/advisories/GHSA-4993-m7g5-r9hh

Comment 1 Dhananjay Arunesh 2020-08-14 06:20:43 UTC

Created etcd tracking bugs for this issue:

Affects: fedora-all [bug 1868879]

Comment 3 Przemyslaw Roguski 2020-08-17 15:18:50 UTC

External References:

https://github.com/etcd-io/etcd/security/advisories/GHSA-4993-m7g5-r9hh

Comment 4 Sam Batschelet 2020-08-17 15:22:17 UTC

FTR ocp 3.x and 4.x do not use etcd internal RBAC so exposure would only be RHEL7 use cases outside of OpenShift.

Comment 10 Riccardo Schirone 2020-08-27 15:12:10 UTC

No patch was developed for this. So far only documentation got updated:
https://github.com/etcd-io/etcd/commit/36f8dee00316080e4f54f5df5a12a0fedd634d2c

Comment 14 Anten Skrabec 2020-09-04 16:25:19 UTC

Statement:

Red Hat OpenShift Container Platform (RHOCP) doesn't use etcd role-based access control (rbac), instead of that OpenShift OAuth authentication is used. Therefore RHOCP is not affected by this vulnerability.
A similar configuration is in place in Red Hat OpenStack Platform (RHOSP) as etcd does not use a password for access and instead uses a TLS certificate.

Comment 16 errata-xmlrpc 2021-03-17 15:30:02 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 16.1

Via RHSA-2021:0916 https://access.redhat.com/errata/RHSA-2021:0916

Comment 17 Product Security DevOps Team 2021-03-17 19:52:10 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-15115