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TYPO3 CMS vulnerable to Denial of Service in Page Error Handling

Moderate severity GitHub Reviewed Published Dec 13, 2022 in TYPO3/typo3 • Updated Jan 30, 2023

Package

composer typo3/cms (Composer)

Affected versions

>= 10.0.0, < 10.4.33
>= 11.0.0, < 11.5.20

Patched versions

10.4.33
11.5.20
composer typo3/cms-core (Composer)
>= 9.0.0, < 9.5.38
>= 10.0.0, < 10.4.33
>= 11.0.0, < 11.5.20
9.5.38
10.4.33
11.5.20

Description

Problem

Requesting invalid or non-existing resources via HTTP triggers the page error handler, which again could retrieve content to be shown as an error message from another page. This leads to a scenario in which the application is calling itself recursively - amplifying the impact of the initial attack until the limits of the web server are exceeded.

This vulnerability is very similar, but not identical, to the one described in TYPO3-CORE-SA-2021-005 (CVE-2021-21359).

Solution

Update to TYPO3 versions 9.5.38 ELTS, 10.4.33 or 11.5.20 that fix the problem described above.

References

References

@ohader ohader published to TYPO3/typo3 Dec 13, 2022
Published to the GitHub Advisory Database Dec 13, 2022
Reviewed Dec 13, 2022
Published by the National Vulnerability Database Dec 14, 2022
Last updated Jan 30, 2023

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
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
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:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.081%
(37th percentile)

Weaknesses

CVE ID

CVE-2022-23500

GHSA ID

GHSA-8c28-5mp7-v24h

Source code

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