Emby MediaServer 3.2.5 Reflected XSS Vulnerability


Vendor: Emby LLC
Product web page: https://www.emby.media
Affected version: 3.2.5
                  3.1.5
                  3.1.2
                  3.1.1
                  3.1.0
                  3.0.0

Summary: Emby (formerly Media Browser) is a media server designed to organize,
play, and stream audio and video to a variety of devices. Emby is open-source,
and uses a client-server model. Two comparable media servers are Plex and Windows
Media Center.

Desc: Emby suffers from a XSS issue due to a failure to properly sanitize user-supplied
input to the URL path filename when handling 'not found' errors. Attackers can exploit
this weakness to execute arbitrary HTML and script code in a user's browser session.

Tested on: Microsoft Windows 7 Professional SP1 (EN)
           Mono-HTTPAPI/1.1, UPnP/1.0 DLNADOC/1.50
           Ubuntu Linux 14.04.5
           MacOS Sierra 10.12.3
           SQLite3


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
                            @zeroscience


Advisory ID: ZSL-2017-5402
Advisory URL: http://zeroscience.mk/en/vulnerabilities/ZSL-2017-5402.php

SSD Advisory: https://blogs.securiteam.com/index.php/archives/3098


22.12.2016

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PoC:

http://TARGET/web/"><script>alert(251)</script>