CVE-2020-15099: high-severity vulnerability in TYPO3 CMS
Exposure of Sensitive Information to an Unauthorized Actor in TYPO3 CMS
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 1.8%
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
TYPO3 · TYPO3 CMSRelated CVEs — TYPO3 CMS
In the same product, most dangerous first.
CVE-2020-15098HIGHMissing Required Cryptographic Step Leading to Sensitive Information Disclosure in TYPO3 CMSEPSS 2.2%CVE-2020-11067HIGHDeserialization of Untrusted Data in TYPO3 CMSEPSS 2.0%CVE-2020-11066HIGHImproperly Controlled Modification of Dynamically-Determined Object Attributes in TYPO3 CMSEPSS 1.5%CVE-2020-11063LOWObservable Response Discrepancy in TYPO3 CMSEPSS 1.2%CVE-2020-11069HIGHCross-Site Request Forgery in TYPO3 CMSEPSS 0.7%CVE-2020-11065MEDIUMCross-Site Scripting in TYPO3 CMSEPSS 0.5%