CVE-2021-21359

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.

CVSS v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://typo3.org/security/advisory/typo3-core-sa-2021-005	Vendor Advisory
https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-4p9g-qgx9-397p	Third Party Advisory
https://packagist.org/packages/typo3/cms-core	Release Notes Third Party Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:typo3:typo3::::::::
	cpe:2.3:a:typo3:typo3::::::::
	cpe:2.3:a:typo3:typo3::::::::

Information

Published : 2021-03-22 19:15

Updated : 2021-03-26 10:54

NVD link : CVE-2021-21359

Mitre link : CVE-2021-21359

JSON object : View

CWE

CWE-405

Asymmetric Resource Consumption (Amplification)

CWE-674

Uncontrolled Recursion

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Products Affected

typo3

typo3

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