CVE-2022-39387

XWiki OIDC Authenticator vulnerable to OpenID login bypass due to improper authentication

Description

XWiki OIDC has various tools to manipulate OpenID Connect protocol in XWiki. Prior to version 1.29.1, even if a wiki has an OpenID provider configured through its xwiki.properties, it is possible to provide a third party provider its details through request parameters. One can then bypass the XWiki authentication altogether by specifying its own provider through the oidc.endpoint.* request parameters (or by using an XWiki-based OpenID provider with oidc.xwikiprovider. With the same approach, one could also provide a specific group mapping through oidc.groups.mapping that would make his user automatically part of the XWikiAdminGroup. This issue has been patched, please upgrade to 1.29.1. There is no workaround, an upgrade of the authenticator is required.

Category

9.1
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.12%
Vendor Advisory xwiki.org
Affected: xwiki-contrib oidc
Published at:
Updated at:

References

Link Tags
https://github.com/xwiki-contrib/oidc/security/advisories/GHSA-m7gv-v8xx-v47w third party advisory
https://github.com/xwiki-contrib/oidc/commit/0247af1417925b9734ab106ad7cd934ee870ac89 third party advisory patch
https://jira.xwiki.org/browse/OIDC-118 issue tracking vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-39387?
CVE-2022-39387 has been scored as a critical severity vulnerability.
How to fix CVE-2022-39387?
To fix CVE-2022-39387, 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-2022-39387 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-39387 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-2022-39387?
CVE-2022-39387 affects xwiki-contrib oidc.
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