CVE-2017-16790 (Medium) detected in symfonyv2.6.6

[mend-bolt-for-github]

CVE-2017-16790 - Medium Severity Vulnerability

Vulnerable Library - symfonyv2.6.6

The Symfony PHP framework

Library home page: https://github.com/symfony/symfony.git

Found in base branch: master

Vulnerable Source Files (3)

/vendor/symfony/form/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationRequestHandler.php
/vendor/symfony/form/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationRequestHandler.php
/vendor/symfony/form/Symfony/Component/Form/RequestHandlerInterface.php

Vulnerability Details

An issue was discovered in Symfony before 2.7.38, 2.8.31, 3.2.14, 3.3.13, 3.4-BETA5, and 4.0-BETA5. When a form is submitted by the user, the request handler classes of the Form component merge POST data and uploaded files data into one array. This big array forms the data that are then bound to the form. At this stage there is no difference anymore between submitted POST data and uploaded files. A user can send a crafted HTTP request where the value of a "FileType" is sent as normal POST data that could be interpreted as a local file path on the server-side (for example, "file:///etc/passwd"). If the application did not perform any additional checks about the value submitted to the "FileType", the contents of the given file on the server could have been exposed to the attacker.

Publish Date: 2018-08-06

URL: CVE-2017-16790

CVSS 3 Score Details (4.3)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: Low
  • Integrity Impact: None
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://nvd.nist.gov/vuln/detail/CVE-2017-16790

Release Date: 2018-08-06

Fix Resolution: 2.7.38,2.8.31,3.2.14,3.3.13,3.4-BETA5,4.0-BETA5

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