CVE Vulnerability

CVE-2021-21379

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.

3.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 6.8 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

5.4 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-v662-xpcc-9xf6 Third Party Advisory
https://jira.xwiki.org/browse/XWIKI-17759 Vendor Advisory
Configurations

Configuration 1

cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:*
cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:*
cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:*
Information

Published : 2021-03-12 06:15

Updated : 2021-03-22 04:26

NVD link : CVE-2021-21379

Mitre link : CVE-2021-21379

Products Affected
No products.
CWE
CWE-281

Improper Preservation of Permissions