PT-2021-14461 · Xwiki · Xwiki Platform

Thomas Mortagne · Published 2021-03-12 · Updated 2021-03-23 · CVE-2021-21379

Positive Technologies (AI Summary)

CVSS v3.1

7.7

High

Base vector

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

Name of the Vulnerable Software and Affected Versions XWiki Platform versions prior to 11.10.11 XWiki Platform versions prior to 12.6.3 XWiki Platform versions prior to 12.8-rc-1

Description The {{wikimacrocontent}} executes the content with the rights of the wiki macro author instead of the caller of that wiki macro. This makes it possible to inject scripts through it, and they will be executed with the rights of the wiki macro, often a user with Programming rights. No such macro exists by default in XWiki Standard, but one could have been created or installed with an extension.

Recommendations For versions prior to 11.10.11, update to version 11.10.11 or later. For versions prior to 12.6.3, update to version 12.6.3 or later. For versions prior to 12.8-rc-1, update to version 12.8-rc-1 or later. As a temporary workaround, consider disabling the affected macros until a patch is available.

Fix

Improper Preservation of Permissions

Weakness Enumeration

CWE-281

Related Identifiers

CVE-2021-21379

GHSA-V662-XPCC-9XF6

Affected Products

Xwiki Platform

References · 5

• https://jira.xwiki.org/browse/XWIKI-17759 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-v662-xpcc-9xf6 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21379 · Security Note
• https://osv.dev/vulnerability/CVE-2021-21379 · Vendor Advisory
• https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-v662-xpcc-9xf6 · Note