Information Exposure Affecting typo3/cms-core package, versions >=9.0.0, <9.5.20 >=10.0.0, <10.4.6


0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    Exploit Maturity Mature
    EPSS 0.32% (71st percentile)
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NVD
8.8 high

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  • Snyk ID SNYK-PHP-TYPO3CMSCORE-595712
  • published 28 Jul 2020
  • disclosed 28 Jul 2020
  • credit Oliver Hader

How to fix?

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

Overview

typo3/cms-core is a free open source enterprise content management system.

Affected versions of this package are vulnerable to Information Exposure. An internal verification mechanism can be used to generate arbitrary checksums. This allows to inject arbitrary data having a valid cryptographic message authentication code (HMAC-SHA1) which can lead to a sensitive information disclosure.

Note: The attacker must have access to at least one Extbase plugin or module action in a TYPO3 installation.