CVE-2021-21379

Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In affected versions of XWiki Platform, 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. This vulnerability has been patched in versions XWiki 12.6.3, 11.10.11 and 12.8-rc-1. 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.

Risk Information

Base Score

5.4

MODERATE

Vector

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

EPSS Score

Exploitation Probability

0.442

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2021-21379 are fixed in XWiki-platform-rendering-wikimacro-store 12.8	Windows
Vulnerabilities CVE-2021-21379 are fixed in XWiki-platform-rendering-wikimacro-store 11.10.11	Windows
Vulnerabilities CVE-2021-21379 are fixed in XWiki-platform-rendering-wikimacro-store 12.6.3	Windows
Vulnerabilities CVE-2021-21379 are fixed in XWiki-platform-rendering-wikimacro-store for Linux 12.8	Linux
Vulnerabilities CVE-2021-21379 are fixed in XWiki-platform-rendering-wikimacro-store for Linux 11.10.11	Linux
Vulnerabilities CVE-2021-21379 are fixed in XWiki-platform-rendering-wikimacro-store for Linux 12.6.3	Linux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234