Bug 2125514 (CVE-2022-35957) - CVE-2022-35957 grafana: Escalation from admin to server admin when auth proxy is used
Summary: CVE-2022-35957 grafana: Escalation from admin to server admin when auth proxy...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2022-35957
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: 2125522 2125523 2125524 2125525 2125526 2125527 2125528 2125529 2125530 2126033 2126034 2126035 2126036 2126265 2126266 2126267 2126268 2128565
Blocks: 2125519
TreeView+ depends on / blocked
 
Reported: 2022-09-09 08:17 UTC by Avinash Hanwate
Modified: 2023-09-01 03:58 UTC (History)
47 users (show)

Fixed In Version: grafana 9.1.6, grafana 9.0.9, grafana 8.5.13
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the grafana package. Auth proxy allows authentication of a user by only providing the username (or email) in an X-WEBAUTH-USER HTTP header. The trust assumption is that a front proxy will take care of authentication and that the Grafana server is only publicly reachable with this front proxy.
Clone Of:
Environment:
Last Closed: 2023-05-09 15:14:34 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2023:2167 0 None None None 2023-05-09 07:13:42 UTC
Red Hat Product Errata RHSA-2023:3642 0 None None None 2023-06-15 16:01:01 UTC

Description Avinash Hanwate 2022-09-09 08:17:33 UTC 
Auth proxy allows to authenticate a user by only providing the username (or email) in an X-WEBAUTH-USER HTTP header: the trust assumption is that a front proxy will take care of authentication and that the Grafana server is publicly reachable only with this front proxy.

Datasource proxy breaks this assumption:
- It is possible to configure a fake datasource pointing to a localhost Grafana install with an X-WEBAUTH-USER HTTP header containing the admin username
- This fake datasource can be called publicly via this proxying feature
Comment 11 Avinash Hanwate 2022-09-21 04:56:32 UTC 
Created grafana tracking bugs for this issue:

Affects: fedora-all [bug 2128565]
Comment 25 errata-xmlrpc 2023-05-09 07:13:39 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:2167 https://access.redhat.com/errata/RHSA-2023:2167
Comment 26 Product Security DevOps Team 2023-05-09 15:14:29 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-2022-35957
Comment 27 errata-xmlrpc 2023-06-15 16:00:58 UTC 
This issue has been addressed in the following products:

  Red Hat Ceph Storage 6.1

Via RHSA-2023:3642 https://access.redhat.com/errata/RHSA-2023:3642
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