CVEvulnerability

CVE-2021-21359

7.5 HIGH Published 2021-03-23 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-03-23
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-405, CWE-674

Description

TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 9.5.25, 10.4.14, 11.1.1 requesting invalid or non-existing resources via HTTP triggers the page error handler which again could retrieve content to be shown as 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 is fixed in versions 9.5.25, 10.4.14, 11.1.1.

Affected configurations

• typo3 typo3 (>= 9.0.0 < 9.5.25) • typo3 typo3 (>= 10.0.0 < 10.4.14) • typo3 typo3 (>= 11.0.0 < 11.1.1)

Related

Weakness · CWE (2)

  • CWE-405 Asymmetric Resource Consumption (Amplification) weakness
  • CWE-674 Uncontrolled Recursion weakness

References