GHSA-x3cf-w64x-4cp2

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GHSA-x3cf-w64x-4cp2

Summary: Symfony Path Disclosure

Details: An issue was discovered in Symfony 2.7.x before 2.7.50, 2.8.x before 2.8.49, 3.x before 3.4.20, 4.0.x before 4.0.15, 4.1.x before 4.1.9, and 4.2.x before 4.2.1. When using the scalar type hint `string` in a setter method (e.g. `setName(string $name)`) of a class that's the `data_class` of a form, and when a file upload is submitted to the corresponding field instead of a normal text input, then `UploadedFile::__toString()` is called which will then return and disclose the path of the uploaded file. If combined with a local file inclusion issue in certain circumstances this could escalate it to a Remote Code Execution.

References: https://nvd.nist.gov/vuln/detail/CVE-2018-19789, https://github.com/symfony/symfony/commit/b65e6f1a47b68f2713b60cdac9cc3a4af62a2d1c, https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/form/CVE-2018-19789.yaml, https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2018-19789.yaml, https://github.com/symfony/symfony, https://lists.debian.org/debian-lts-announce/2019/03/msg00009.html, https://lists.fedoraproject.org/archives/list/[email protected]/message/4TD3E7FZIXLVFG3SMFJPDEKPZ26TJOW7, https://lists.fedoraproject.org/archives/list/[email protected]/message/JZMRJ7VTHCY5AZK24G4QGX36RLUDTDKE, https://lists.fedoraproject.org/archives/list/[email protected]/message/OA4WVFN5FYPIXAPLWZI6N425JHHDSWAZ, https://seclists.org/bugtraq/2019/May/21, https://symfony.com/blog/cve-2018-19789-disclosure-of-uploaded-files-full-path, https://symfony.com/cve-2018-19789, https://web.archive.org/web/20210124224817/http://www.securityfocus.com/bid/106249, https://www.debian.org/security/2019/dsa-4441