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XSS in the attachment history

High
surli published GHSA-mxf2-4r22-5hq9 Sep 8, 2022

Package

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

Affected versions

>= 1.0

Patched versions

13.10.6, 14.3-rc-1

Description

Impact

It's possible to store a JavaScript which will be executed by anyone viewing the history of an attachment containing javascript in its name.

For example, attachment a file with name ><img src=1 onerror=alert(1)>.jpg will execute the alert.

Patches

This issue has been patched in XWiki 13.10.6 and 14.3RC1.

Workarounds

It is possible to replace viewattachrev.vm, the entry point for this attack, by a patched version from the patch without updating XWiki.

References

For more information

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Severity

High

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
Low
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
Low

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:L/UI:R/S:C/C:H/I:H/A:L

CVE ID

CVE-2022-36094

Weaknesses