CVE-2020-11066
Class destructors causing side-effects when being unserialized in TYPO3 CMS
Description
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.
How to fix CVE-2020-11066
To remediate CVE-2020-11066, upgrade the affected package to a fixed version below.
- —upgrade to 9.5.17 or later
- —upgrade to 10.4.2 or later
- —upgrade to 9.5.17 or later
Is CVE-2020-11066 being exploited?
Low — EPSS is 1.5%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- >= 9.0.0, < 9.5.17, >= 10.0.0, < 10.4.2
- >= 10.0.0, < 10.4.2
- >= 9.0.0, < 9.5.17
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H |