CVE-2018-19789

描述

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.

如何修補 CVE-2018-19789

要修補 CVE-2018-19789,請將受影響套件升級到下列已修補版本。

• —升級至 3.4.20+dfsg-1 或更新版本
• —升級至 2.7.50 或更新版本
• —升級至 2.7.50 或更新版本

CVE-2018-19789 正在被利用嗎?

低 — EPSS 為 3.6%,目前沒有觀察到大規模利用活動。

受影響套件(3)

• from 0, < 3.4.20+dfsg-1
• >= 2.7.0, < 2.7.50
• >= 2.7.0, < 2.7.50

CVSS 分數

參考連結(15)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2018-19789
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2018-19789
• PATCHgithub.com/symfony/symfony
• WEBgithub.com/FriendsOfPHP/security-advisories/blob/master/symfony/form/CVE-2018-19789.yaml