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TYPO3 vulnerable to Cross-Site Scripting in the ShowImageController

Moderate severity GitHub Reviewed Published May 14, 2024 in TYPO3/typo3 • Updated May 14, 2024

Package

composer typo3/cms-core (Composer)

Affected versions

>= 9.0.0, <= 9.5.47
>= 10.0.0, <= 10.4.44
>= 11.0.0, <= 11.5.36
>= 12.0.0, <= 12.4.14
>= 13.0.0, <= 13.1.0

Patched versions

9.5.48
10.4.45
11.5.37
12.4.15
13.1.1

Description

Problem

Failing to properly encode user-controlled values in file entities, the ShowImageController (eID tx_cms_showpic) is vulnerable to cross-site scripting. Exploiting this vulnerability requires a valid backend user account with access to file entities.

Solution

Update to TYPO3 versions 9.5.48 ELTS, 10.4.45 ELTS, 11.5.37 LTS, 12.4.15 LTS, 13.1.1 that fix the problem described.

Credits

Thanks to TYPO3 security team member Torben Hansen who reported this issue and to TYPO3 core & security team member Oliver Hader who fixed the issue.

References

References

@ohader ohader published to TYPO3/typo3 May 14, 2024
Published by the National Vulnerability Database May 14, 2024
Published to the GitHub Advisory Database May 14, 2024
Reviewed May 14, 2024
Last updated May 14, 2024

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
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
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:L/UI:R/S:C/C:L/I:L/A:N

EPSS score

0.045%
(17th percentile)

Weaknesses

CVE ID

CVE-2024-34357

GHSA ID

GHSA-hw6c-6gwq-3m3m

Source code

Credits

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