CVE-2018-19789

Published: 18 December 2018

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.

Priority

Medium

CVSS 3 base score: 5.3

Status

Package Release Status
symfony
Launchpad, Ubuntu, Debian
Upstream
Released (3.4.20+dfsg-1)
Ubuntu 21.04 (Hirsute Hippo) Not vulnerable
(3.4.20+dfsg-1)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(3.4.20+dfsg-1)
Ubuntu 18.04 LTS (Bionic Beaver) Needed

Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(end of standard support, was needed)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist