Vulnerability · Published Oct 25, 2023 · Assigned by GitHub_M
CVE-2023-37911org.xwiki.platform:xwiki-platform-oldcore may leak data through deleted and re-created documents
Medium 6.5
In plain English
A medium-severity security flaw in xwiki-platform from xwiki. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Starting in version 9.4-rc-1 and prior to versions 14.10.8 and 15.3-rc-1, when a document has been deleted and re-created, it is possible for users with view right on the re-created document but not on the deleted document to view the contents of the deleted document. Such a situation might arise when rights were added to the deleted document. This can be exploited through the diff feature and, partially, through the REST API by using versions such as `deleted:1` (where the number counts the deletions in the wiki and is thus guessable). Given sufficient rights, the attacker can also re-create the deleted document, thus extending the scope to any deleted document as long as the attacker has edit right in the location of the deleted document. This vulnerability has been patched in XWiki 14.10.8 and 15.3 RC1 by properly checking rights when deleted revisions of a document are accessed. The only workaround is to regularly clean deleted documents to minimize the potential exposure. Extra care should be taken when deleting sensitive documents that are protected individually (and not, e.g., by being placed in a protected space) or deleting a protected space as a whole.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.xwiki.platform:xwiki-platform-oldcore | 14.10.8 | GHSA-gh64-qxh5-4m33 |
| Maven | org.xwiki.platform:xwiki-platform-oldcore | 15.3-rc-1 | GHSA-gh64-qxh5-4m33 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| xwiki | xwiki-platform | >= 9.4-rc-1, < 14.10.8>= 15.0-rc-1, < 15.3-rc-1 |
Weakness: CWE-668 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-gh64-qxh5-4m33 x_refsource_CONFIRM
- https://github.com/xwiki/xwiki-platform/commit/f471f2a392aeeb9e51d59fdfe1d76fccf532523f x_refsource_MISC
- https://extensions.xwiki.org/xwiki/bin/view/Extension/Index%20Application#HPermanentlydeleteallpages x_refsource_MISC
- https://jira.xwiki.org/browse/XWIKI-20684 x_refsource_MISC
- https://jira.xwiki.org/browse/XWIKI-20685 x_refsource_MISC
- https://jira.xwiki.org/browse/XWIKI-20817 x_refsource_MISC