CVE-2014-3445 - Unauthenticated Backup and Password Disclosure in HandsomeWeb SOS Webpages

Vulnerability title: Unauthenticated Backup and Password Disclosure in
HandsomeWeb SOS Webpages
CVE: CVE-2014-3445
Vendor: HandsomeWeb
Product: SOS Webpages
Affected version: 1.1.11 and earlier
Fixed version: 1.1.12
Reported by: Freakyclown

Details:

The default setup allows an unauthenticated user to access
administrative functions such as backing up of key files within the CMS.
This is done by appending the following to a domain using the software
affected.

/backup.php?a=2&k=6f15afa1ac4edea0g145e884116334b7

Where "a" is the file number to back up and "k" is the MD5key used to
authenticate the administrator, however if "k" does not match the
correct key rather than disallowing the unauthenticated user to back up
the file the service will provide the user with the correct key. For
example:

Failure, wrong key. The right key is 5f17aca1ae2edea0f145e884116371a5

Using this new key in the url such as below:
/backup.php?a=2&k=5f17aca1ae2edea0f145e884116371a5

Will allow the user to perform the backup of files.

In addition to this the key is generated by the code:
$backupkey=MD5

Making it trivial to decrypt the key provided above to gain the
administrators password and gain further control over the site.

Further details at:
https://www.portcullis-security.com/security-research-and-downloads/security-advisories/cve-2014-3445/

Copyright:
Copyright (c) Portcullis Computer Security Limited 2014, All rights
reserved worldwide. Permission is hereby granted for the electronic
redistribution of this information. It is not to be edited or altered in
any way without the express written consent of Portcullis Computer
Security Limited.

Disclaimer:
The information herein contained may change without notice. Use of this
information constitutes acceptance for use in an AS IS condition. There
are NO warranties, implied or otherwise, with regard to this information
or its use. Any use of this information is at the user's risk. In no
event shall the author/distributor (Portcullis Computer Security
Limited) be held liable for any damages whatsoever arising out of or in
connection with the use or spread of this information.