10

CVSS Score

3.1

-

CVSS Score

Basic Information

CVE ID

CVE-2023-36468

GHSA ID

GHSA-8q9q-r9v2-644m

EPSS Score

0.91129%

CWE

CWE-459

Published

6/30/2023

Updated

11/12/2023

KEV Status

Technology

Java

Basic Information

CVE ID

GHSA ID

EPSS Score

CWE

Published

Updated

KEV Status

Technology

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CVE-2023-36468

CVE-2023-36468: Upgrading doesn't prevent exploiting vulnerable XWiki documents

Impact

When an XWiki installation is upgraded and that upgrade contains a fix for a bug in a document, just a new version of that document is added. In some cases, it's still possible to exploit the vulnerability that was fixed in the new version. The severity of this depends on the fixed vulnerability, for the purpose of this advisory take CVE-2022-36100 as example - it is easily exploitable with just view rights and critical. When XWiki is upgraded from a version before the fix for it (e.g., 14.3) to a version including the fix (e.g., 14.4), the vulnerability can still be reproduced by adding rev=1.1 to the URL used in the reproduction steps so remote code execution is possible even after upgrading. Therefore, this affects the confidentiality, integrity and availability of the whole XWiki installation. This vulnerability also affects manually added script macros that contained security vulnerabilities that were later fixed by changing the script macro without deleting the versions with the security vulnerability from the history.

This vulnerability doesn't affect freshly installed versions of XWiki. Further, this vulnerability doesn't affect content that is only loaded from the current version of a document like the code of wiki macros or UI extensions.

Patches

This vulnerability has been patched in XWiki 14.10.7 and 15.2RC1 by forcing old revisions to be executed in a restricted mode that disables all script macros.

Workarounds

As a workaround, admins can manually delete old revisions of affected documents. A script could be used to identify all installed documents and delete the history for them. However, also manually added and later corrected code may be affected by this vulnerability so it is easy to miss documents.

References

https://jira.xwiki.org/browse/XWIKI-20594
https://github.com/xwiki/xwiki-platform/commit/15a6f845d8206b0ae97f37aa092ca43d4f9d6e59

(GitHub Advisory)

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CVE-2023-36468

CVE-2023-36468:

10

CVSS Score

3.1

-

CVSS Score

Basic Information

CVE ID

CVE-2023-36468

GHSA ID

GHSA-8q9q-r9v2-644m

EPSS Score

0.91129%

CWE

CWE-459

Published

6/30/2023

Updated

11/12/2023

KEV Status

Technology

Java

Basic Information

CVE ID

GHSA ID

EPSS Score

CWE

Published

Updated

KEV Status

Technology

Technical Details

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
org.xwiki.platform:xwiki-platform-oldcore	maven	>= 2.0, < 14.10.7	14.10.7
org.xwiki.platform:xwiki-platform-oldcore	maven	>= 15.0-rc-1, < 15.2-rc-1	15.2-rc-1

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability stems from XWiki's handling of old document revisions. Prior to the patch, functions responsible for rendering document content (titles, transformations, and general content) did not account for a 'restricted' mode. The commit introduced checks for document.isRestricted() in these areas to disable script execution in old revisions. The vulnerable functions are those that previously processed content without these checks, allowing attackers to exploit old vulnerable versions by specifying revision parameters (rev=1.1). Key examples include title evaluation in AbstractDocumentTitleDisplayer, transformation context handling in XWikiDocumentCompatibilityAspect, and content rendering in XWikiDocument - all lacked restricted mode enforcement before the patch.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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10

-

Basic Information

Basic Information

Concerned about an active attack path?

CVE-2023-36468: Upgrading doesn't prevent exploiting vulnerable XWiki documents

Impact

Patches

Workarounds

References

CVE-2023-36468:

10

-

Basic Information

Basic Information

Technical Details

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

Vulnerability IntelligenceMiggo AI

Basic Information

Basic Information

10

10

CVE-2023-36468: Upgrading doesn't prevent exploiting vulnerable XWiki documents

Impact

Patches

Workarounds

References

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI