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It's possible to read any file from the WAR with just SCRIPT right through $xwiki.invokeServletAndReturnAsString

Moderate
tmortagne published GHSA-2jhm-qp48-hv5j Feb 9, 2022

Package

maven org.xwiki.platform:xwiki-platform-oldcore (Maven)

Affected versions

< 12.10.9, < 13.4.3, < 13.7-rc-1

Patched versions

12.10.9, 13.4.3, 13.7-rc-1

Description

Impact

Any user with SCRIPT right (EDIT right before XWiki 7.4) can read any file located in the XWiki WAR (for example xwiki.cfg and xwiki.properties) through XWiki#invokeServletAndReturnAsString:

$xwiki.invokeServletAndReturnAsString("/WEB-INF/xwiki.cfg")

Patches

It has been patched in XWiki versions 12.10.9, 13.4.3 and 13.7-rc-1.

Workarounds

The only workaround is to give SCRIPT right only to trusted users.

References

https://jira.xwiki.org/browse/XWIKI-18870

For more information

If you have any questions or comments about this advisory:

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H

CVE ID

CVE-2022-23621

Weaknesses

Files or Directories Accessible to External Parties

The product makes files or directories accessible to unauthorized actors, even though they should not be. Learn more on MITRE.

Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action. Learn more on MITRE.