CVE-2022-31166: XWiki.WebHome vulnerable to Improper Privilege Management in XWiki resolving groups
First published: Wed Sep 07 2022(Updated: )
XWiki Platform Old Core is a core package for XWiki Platform, a generic wiki platform. Starting in versions 11.3.7, 11.0.3, and 12.0RC1, it is possible to exploit a bug in XWikiRights resolution of groups to obtain privilege escalation. More specifically, editing a right with the object editor leads to adding a supplementary empty value to groups which is then resolved as a reference to XWiki.WebHome page. Adding an XWikiGroup xobject to that page then transforms it to a group, any user put in that group would then obtain the privileges related to the edited right. Note that this security issue is normally mitigated by the fact that XWiki.WebHome (and XWiki space in general) should be protected by default for edit rights. The problem has been patched in XWiki 13.10.4 and 14.2RC1 to not consider anymore empty values in XWikiRights. It's possible to work around the problem by setting appropriate rights on XWiki.WebHome page to prevent users to edit it.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xwiki | >=11.3.7<13.10.4 | |
| Xwiki | >=14.0<14.2 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2022-31166?
CVE-2022-31166 has a medium severity rating due to potential privilege escalation threats.
How do I fix CVE-2022-31166?
To fix CVE-2022-31166, update your XWiki installation to version 13.10.4 or above.
What are the affected versions for CVE-2022-31166?
CVE-2022-31166 affects XWiki versions between 11.3.7 and 13.10.4, as well as versions from 14.0 to 14.2.
What kind of vulnerability is CVE-2022-31166?
CVE-2022-31166 is a privilege escalation vulnerability in the XWikiRights resolution for editing permissions.
Can CVE-2022-31166 be exploited remotely?
Yes, CVE-2022-31166 can be exploited remotely by users with certain permissions to escalate their rights.
- agent/references
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/remedy
- agent/weakness
- agent/author
- agent/title
- agent/severity
- agent/description
- agent/event
- agent/first-publish-date
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/xwiki
- canonical/xwiki
- version/xwiki/11.3.7
- version/xwiki/14.0