Description
The extension passes an attacker-controlled cookie directly to PHP's unserialize() without safely processing the input. A remote, unauthenticated attacker can supply a crafted serialized payload to trigger PHP Object Injection, leading to Remote Code Execution on the TYPO3 server. Exploitation requires the content element to be configured with "Persistent Mode: Static" in the plugin settings.
CVSS breakdown
CVSS 4.0
Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Confidentiality (Vulnerable System)
High
Integrity (Vulnerable System)
High
Availability (Vulnerable System)
High
Confidentiality (Subsequent System)
None
Integrity (Subsequent System)
None
Availability (Subsequent System)
None
Affected products
- TYPO3 / Extension "Content Element Selector"6.0.0 – 6.0.1
- TYPO3 / Extension "Content Element Selector"5.0.0 – 5.0.1
- TYPO3 / Extension "Content Element Selector"4.0.0 – 4.0.2
- TYPO3 / Extension "Content Element Selector"0 – 3.0.3
Exploits & PoCs
- nucleiTYPO3 ceselector Extension - Insecure Deserializationby DhiyaneshDk