| Name | CVE-2018-19789 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1707-1, DSA-4441-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| symfony (PTS) | buster | 3.4.22+dfsg-2+deb10u1 | fixed |
| buster (security) | 3.4.22+dfsg-2+deb10u2 | fixed | |
| bullseye | 4.4.19+dfsg-2+deb11u3 | fixed | |
| bookworm | 5.4.23+dfsg-1 | fixed | |
| sid, trixie | 5.4.28+dfsg-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| symfony | source | jessie | 2.3.21+dfsg-4+deb8u4 | DLA-1707-1 | ||
| symfony | source | stretch | 2.8.7+dfsg-1.3+deb9u2 | DSA-4441-1 | ||
| symfony | source | (unstable) | 3.4.20+dfsg-1 |
https://symfony.com/blog/cve-2018-19789-disclosure-of-uploaded-files-full-path