CVE-2020-15098, GHSA-m5vr-3m74-jwxp
packagist/typo3/cms
Deserialization of Untrusted Data
In TYPO3 CMS, it has been discovered that 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) and can lead to various attack chains including potential privilege escalation, insecure deserialization & remote code execution. The overall severity of this vulnerability is high based on mentioned attack chains and the requirement of having a valid backend user session (authenticated).
All versions starting from 9.0.0 before 9.5.20, all versions starting from 10.0.0 before 10.4.6
Upgrade to versions 9.5.20, 10.4.6 or above.
2020-08-06
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