CVE-2018-19789 Detail

Current 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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  5.3 MEDIUM
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N


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Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/106249 Third Party Advisory  VDB Entry 
https://lists.debian.org/debian-lts-announce/2019/03/msg00009.html Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4TD3E7FZIXLVFG3SMFJPDEKPZ26TJOW7/ Release Notes  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JZMRJ7VTHCY5AZK24G4QGX36RLUDTDKE/ Release Notes  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OA4WVFN5FYPIXAPLWZI6N425JHHDSWAZ/ Release Notes  Third Party Advisory 
https://seclists.org/bugtraq/2019/May/21
https://symfony.com/blog/cve-2018-19789-disclosure-of-uploaded-files-full-path Patch  Vendor Advisory 
https://www.debian.org/security/2019/dsa-4441

Weakness Enumeration

CWE-ID CWE Name Source
CWE-434 Unrestricted Upload of File with Dangerous Type cwe source acceptance level NIST  

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-19789
NVD Published Date:
12/18/2018
NVD Last Modified:
05/10/2019
Source:
MITRE