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It's possible to access a classloader file out of the "templates/" prefix through template manager

Low
surli published GHSA-9qrp-h7fw-42hg May 25, 2022

Package

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

Affected versions

>= 8.3-rc-1

Patched versions

14.0, 13.10.3

Description

Impact

One can ask for any file located in the classloader using the template API and a path with ".." in it. For example

{{template name="../xwiki.hbm.xml"/}}

To our knownledge none of the available files of the classloader in XWiki Standard contain any strong confidential data, hence the low confidentiality value of this advisory.

Patches

The issue is patched in versions 14.0 and 13.10.3.

Workarounds

There's no easy workaround for this issue, administrators should upgrade their wiki.

References

For more information

If you have any questions or comments about this advisory:

Severity

Low

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
None
Availability
None

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:N/A:N

CVE ID

CVE-2022-29253

Weaknesses