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Privilege Escalation Affecting typo3/cms package, versions >=9.0.0, <9.5.20 >=10.0.0, <10.4.6

0.0
high

Snyk CVSS

    Attack Complexity High
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    Exploit Maturity Mature
    EPSS 0.94% (83rd percentile)
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NVD
8.1 high

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  • Snyk ID SNYK-PHP-TYPO3CMS-595714
  • published 28 Jul 2020
  • disclosed 28 Jul 2020
  • credit Oliver Hader
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Introduced: 28 Jul 2020

CVE-2020-15099 Open this link in a new tab
CWE-264 Open this link in a new tab

How to fix?

Upgrade typo3/cms to version 9.5.20, 10.4.6 or higher.

Overview

typo3/cms is a free open source Content Management Framework.

Affected versions of this package are vulnerable to Privilege Escalation. An attacker could generate a valid cryptographic message authentication code (HMAC-SHA1) which make it 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.