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GHSA-6377-hfv9-hqf6
No affected components available
Description
In a sandbox, an attacker can call __toString() on an object even if the __toString() method is not allowed by the security policy when the object is part of an array or an argument list (arguments to a function or a filter for instance).
Resolution
The sandbox mode now checks the __toString() method call on all objects.
The patch for this issue is available here for the 3.11.x branch, and here for the 3.x branch.
Credits
We would like to thank Jamie Schouten for reporting the issue and Fabien Potencier for providing the fix.
The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs high-level or administrative privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information.
Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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