Advisory ID: SGMA-16002
Title: Symphony CMS multiple vulnerabilities
Product: Symphony CMS
Version: 2.6.5 and probably prior
Vendor: www.getsymphony.com
Vulnerability type:  SQL-injection, Unrestriced File Upload
Risk level:  4 / 5
Credit:  filippo.cavallarin@wearesegment.com
CVE: N/A
Vendor notification: 2016-02-02
Vendor fix: 2016-02-05
Public disclosure: 2016-02-08


Details

Symphony CMS suffers from multiple vulnerabilities:

- SQL Injection

The  contentAjaxQuery class suffers from a SQL-Injection vulnerability because the request
parameter "query" is used to build a sql query without beeing properly sanitized.
In order to exploit this issue, an attaccker must be logged into the application as a
non-privileged user.
The following proof-of-concept demostrates this issue by listing users credentials:

https://symphony-cms.local/symphony/ajax/query/?field_id=1&query=%27%20union%20select%20username,password,1,2%20from%20sym_authors%20--%20a&types=entry&limit=3000


- Unrestricted file upload

Symphony CMS suffers from an Unrestricted File Upload vulnerability that leads to remote
code execution in the context of the web server.
It is possible for a non-privileged user to upload a .php file into the webroot and
execute arbitrary php code.
In order to exploit this issue, an attaccker must be logged into the application as
a non-privileged user and it must exist at least one "section" with a file upload filed.
To reproduce the issue, follow the steps below:

1. As an admin create a Section with a File Upload field
2. Log as an author and create new entry with the newly created section
3. Upload a .php file (ie tmp.php) and load it with the browser



Solution

Upgrade to Symphony CMS version 2.6.6