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CVE-2020-15099 Detail

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.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

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

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 6.8 MEDIUM

Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P)

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

3 change records found show changes

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

Quick Info

CVE Dictionary Entry:
CVE-2020-15099
NVD Published Date:
07/29/2020
NVD Last Modified:
10/07/2021
Source:
GitHub, Inc.

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Information Technology Laboratory

National Vulnerability Database