Description

In TYPO3 CMS greater than or equal to 9.0.0 and less than 9.5.20, and greater than or equal to 10.0.0 and less than 10.4.6, in a case where an attacker manages to generate a valid cryptographic message authentication code (HMAC-SHA1) - either by using a different existing vulnerability or in case the internal encryptionKey was exposed - it is possible to retrieve arbitrary files of a TYPO3 installation. This includes the possibility to fetch typo3conf/LocalConfiguration.php, which again contains the encryptionKey as well as credentials of the database management system being used. In case a database server is directly accessible either via internet or in a shared hosting network, this allows the ability to completely retrieve, manipulate or delete database contents. This includes creating an administration user account - which can be used to trigger remote code execution by injecting custom extensions. This has been patched in versions 9.5.20 and 10.4.6.

Severity

 

CVSS Version 3.x CVSS Version 2.0

CVSS 3.x Severity and Metrics:

CNA:  GitHub, Inc.

Base Score:  8.1 HIGH

Vector:  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: The NVD and the CNA have provided the same score. When this occurs only the CNA information is displayed, but the Acceptance Level icon for the CNA is given a checkmark to signify NVD concurrence.

CVSS 2.0 Severity and Metrics:

NIST: NVD

Base Score:  6.8 MEDIUM

Vector:  (AV:N/AC:M/Au:N/C:P/I:P/A:P)

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-3x94-fv5h-5q2c	Vendor Advisory
https://typo3.org/security/advisory/typo3-core-sa-2020-007	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-20	Improper Input Validation	NIST   GitHub, Inc.
CWE-200	Exposure of Sensitive Information to an Unauthorized Actor	GitHub, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

2 change records found show changes

Reanalysis by NIST 10/07/2021 1:16:21 PM

Action	Type	Old Value	New Value

Initial Analysis by NIST 8/05/2020 11:26:41 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		OR *cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* versions from (including) 9.0.0 up to (excluding) 9.5.20 *cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* versions from (including) 10.0.0 up to (excluding) 10.4.6
Added	CVSS V2		NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P)
Added	CVSS V3.1		NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Added	CWE		NIST CWE-20
Changed	Reference Type	https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-3x94-fv5h-5q2c No Types Assigned	https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-3x94-fv5h-5q2c Vendor Advisory
Changed	Reference Type	https://typo3.org/security/advisory/typo3-core-sa-2020-007 No Types Assigned	https://typo3.org/security/advisory/typo3-core-sa-2020-007 Vendor Advisory