What is GHSA-v662-xpcc-9xf6?

GHSA-v662-xpcc-9xf6 is a security advisory published by GitHub Security Advisories with Low severity. It's possible to execute anything with the rights of the author of a macro which uses the {{wikimacrocontent}} macro

Which CVE IDs does GHSA-v662-xpcc-9xf6 cover?

GHSA-v662-xpcc-9xf6 covers the following CVE IDs: CVE-2021-21379. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by GHSA-v662-xpcc-9xf6?

GHSA-v662-xpcc-9xf6 affects 3 products, including: maven/org.xwiki.platform:xwiki-platform-rendering-wikimacro-store:\u003e= 11.4, \u003c 11.10.11; maven/org.xwiki.platform:xwiki-platform-rendering-wikimacro-store:\u003e= 12.0, \u003c 12.6.3; maven/org.xwiki.platform:xwiki-platform-rendering-wikimacro-store:\u003e= 12.7, \u003c= 12.7.1.

GHSA-v662-xpcc-9xf6Low

It's possible to execute anything with the rights of the author of a macro which uses the {{wikimacrocontent}} macro

Vendor

GitHub Security Advisories

Published

March 23, 2021

Last Modified

February 1, 2023

🔗 CVE IDs covered (1)

CVE-2021-21379 →

📋 Description

Impact

The {{wikimacrocontent}} executes the content with the rights of the wiki macro author instead of the caller of that wiki macro. This makes possible to inject scripts through it and they will be executed with the rights of the wiki macro (very often a user which has Programming rights).

Fortunately, no such macro exists by default in XWiki Standard but one could have been created or installed with an extension.

Patches

It has been patched in versions XWiki 12.6.3, 11.10.11 and 12.8-rc-1.

Workarounds

There is no easy workaround other than disabling the affected macros. Inserting content in a safe way or knowing what is the user who called the wiki macro is not easy.

References

https://jira.xwiki.org/browse/XWIKI-17759

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

🎯 Affected products3

maven/org.xwiki.platform:xwiki-platform-rendering-wikimacro-store:>= 11.4, < 11.10.11
maven/org.xwiki.platform:xwiki-platform-rendering-wikimacro-store:>= 12.0, < 12.6.3
maven/org.xwiki.platform:xwiki-platform-rendering-wikimacro-store:>= 12.7, <= 12.7.1