CVE-2022-39387

Description

### Impact Even if a wiki has an OpenID provider configured through its xwiki.properties, it is possible to provide a third party provider by providing 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 ### Patches Patched in version 1.29.1. ### Workarounds There is no workaround, an upgrade of the authenticator is required. ### References https://jira.xwiki.org/browse/OIDC-118 ### For more information If you have any questions or comments about this advisory: * Open an issue in Jira XWiki * Email us at our security mailing list

How to fix CVE-2022-39387

To remediate CVE-2022-39387, upgrade the affected package to a fixed version below.

• —upgrade to 1.29.1 or later

Is CVE-2022-39387 being exploited?

Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• from 0, < 1.29.1

CVSS scores

References (5)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2022-39387
• PATCHgithub.com/xwiki-contrib/oidc
• WEBgithub.com/xwiki-contrib/oidc/commit/0247af1417925b9734ab106ad7cd934ee870ac89
• WEBgithub.com/xwiki-contrib/oidc/security/advisories/GHSA-m7gv-v8xx-v47w