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Improper Resource Shutdown or Release in TYPO3 extension

High severity GitHub Reviewed Published Aug 30, 2021 to the GitHub Advisory Database • Updated Feb 1, 2023

Package

composer webcoast/deferred-image-processing (Composer)

Affected versions

< 1.0.2

Patched versions

1.0.2

Description

Wrong usage of the TYPO3 FAL API results in copies of processed files being saved to the /var/transient/ folder of a TYPO3 website on every frontend request. This can result in Denial of Service, since the webspace may be filled up with image files simply by crafting a large amount of requests to the website.

References

Published by the National Vulnerability Database Aug 13, 2021
Reviewed Aug 30, 2021
Published to the GitHub Advisory Database Aug 30, 2021
Last updated Feb 1, 2023

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
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:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:F/RL:O/RC:C

EPSS score

0.103%
(44th percentile)

Weaknesses

CVE ID

CVE-2021-38623

GHSA ID

GHSA-34jq-548x-m2x9

Source code

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