Bug 1868878 (CVE-2020-15115) - CVE-2020-15115 etcd: improper validation of passwords allow an attacker to guess or brute-force user's passwords
Summary: CVE-2020-15115 etcd: improper validation of passwords allow an attacker to gu...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-15115
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1869283 1868879 1870507 1874767 1874872 1875653 1875654 1881178
Blocks: 1868882
TreeView+ depends on / blocked
 
Reported: 2020-08-14 06:19 UTC by Dhananjay Arunesh
Modified: 2021-06-08 14:32 UTC (History)
32 users (show)

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.
Clone Of:
Environment:
Last Closed: 2021-03-17 19:52:10 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:0916 0 None None None 2021-03-17 15:30:15 UTC

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
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