CVE-2020-11066: Improperly Controlled Modification of Dynamically-Determined Object Attributes in TYPO3 CMS
Calling unserialize() on malicious user-submitted content can result in the following scenarios: - trigger deletion of arbitrary directory in file system (if writable for web server) - trigger message submission via email using identity of web site (mail relay)
Another insecure deserialization vulnerability is required to actually exploit mentioned aspects.
Update to TYPO3 versions 9.5.17 or 10.4.2 that fix the problem described.
References https://typo3.org/security/advisory/typo3-core-sa-2020-004
Other sources
In TYPO3 CMS greater than or equal to 9.0.0 and less than 9.5.17 and greater than or equal to 10.0.0 and less than 10.4.2, calling unserialize() on malicious user-submitted content can lead to modification of dynamically-determined object attributes and result in triggering deletion of an arbitrary directory in the file system, if it is writable for the web server. It can also trigger message submission via email using the identity of the web site (mail relay). Another insecure deserialization vulnerability is required to actually exploit mentioned aspects. This has been fixed in 9.5.17 and 10.4.2.
TYPO3-CORE-SA-2020-004: Class destructors causing side-effects when being unserialized
Affected Software
Event History
Frequently Asked Questions
What is vulnerability CVE-2020-11066?
Vulnerability CVE-2020-11066, also known as TYPO3-CORE-SA-2020-004, is a security vulnerability that allows class destructors to cause side effects when being unserialized in TYPO3 CMS.
Which software versions are affected by CVE-2020-11066?
TYPO3 CMS versions 9.0.0 up to 9.5.17 and versions 10.0.0 up to 10.4.2 are affected by CVE-2020-11066.
What is the severity of vulnerability CVE-2020-11066?
The severity of vulnerability CVE-2020-11066 is not provided in the available information.
How can I fix vulnerability CVE-2020-11066?
To fix vulnerability CVE-2020-11066, it is recommended to upgrade to TYPO3 CMS versions 9.5.18 or 10.4.3, or apply the provided patches.
Where can I find more information about vulnerability CVE-2020-11066?
You can find more information about vulnerability CVE-2020-11066 in the TYPO3 security advisory TYPO3-CORE-SA-2020-004, available at https://typo3.org/security/advisory/typo3-core-sa-2020-004.