Bug 1624088 (CVE-2018-15727) - CVE-2018-15727 grafana: authentication bypass knowing only a username of an LDAP or OAuth user
Summary: CVE-2018-15727 grafana: authentication bypass knowing only a username of an ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-15727
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: 1626399 1626400 1626401 1626866 1626867
Blocks: 1624089
TreeView+ depends on / blocked
 
Reported: 2018-08-30 22:11 UTC by Laura Pardo
Modified: 2021-02-16 23:08 UTC (History)
17 users (show)

Fixed In Version: grafana 5.2.3, grafana 4.6.4
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Last Closed: 2019-06-10 10:37:05 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:3829 0 None None None 2018-12-17 17:06:22 UTC
Red Hat Product Errata RHSA-2019:0019 0 None None None 2019-01-03 17:44:53 UTC

Description Laura Pardo 2018-08-30 22:11:09 UTC 
A flaw was found in Grafana 2.x, 3.x, and 4.x before 4.6.4 and 5.x before 5.2.3 allows authentication bypass because an attacker can generate a valid "remember me" cookie knowing only a username of an LDAP or OAuth user.


References:
https://grafana.com/blog/2018/08/29/grafana-5.2.3-and-4.6.4-released-with-important-security-fix/
Comment 1 Siddharth Sharma 2018-08-31 11:11:04 UTC 
Reading code following seem to be fixes for this

For 5.2.x: https://github.com/grafana/grafana/commit/df83bf10a225811927644bdf6265fa80bdea9137
For 4.6.x: https://github.com/grafana/grafana/commit/7baecf0d0deae0d865e45cf03e082bc0db3f28c3
Comment 4 Siddharth Sharma 2018-09-07 06:22:37 UTC 
Mitigation:

As per upstream (https://grafana.com/blog/2018/08/29/grafana-5.2.3-and-4.6.4-released-with-important-security-fix)

* Switch to authentication mechanism other than LDAP or OAuth
* Grafana should be isolated from public networks
Comment 9 errata-xmlrpc 2018-12-17 17:06:21 UTC 
This issue has been addressed in the following products:

  Red Hat Gluster Storage 3.4 for RHEL 7

Via RHSA-2018:3829 https://access.redhat.com/errata/RHSA-2018:3829
Comment 10 errata-xmlrpc 2019-01-03 17:44:51 UTC 
This issue has been addressed in the following products:

  Red Hat Ceph Storage 3.2

Via RHSA-2019:0019 https://access.redhat.com/errata/RHSA-2019:0019
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