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Advisory ID: SYSS-2015-037
Product(s): Password Safe and Repository Enterprise
Manufacturer: MATESO GmbH
Affected Version(s): 7.4.4 Build 2247
Tested Version(s): 7.4.4 Build 2247
Vulnerability Type: Insufficiently Protected Credentials (CWE-522)
                    Use of a One-Way Hash without a Salt (CWE-759)
Risk Level: Medium
Solution Status: Fixed
Manufacturer Notification: 2015-07-09
Solution Date: 2015-10-05
Public Disclosure: 2015-10-12
CVE Reference: Not yet assigned
Author of Advisory: Matthias Deeg (SySS GmbH)

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Overview:

Password Safe and Repository Enterprise is a password management
software for companies with many features.

The manufacturer MATESO GmbH describes the product as follows (see [1]):

"Manage your passwords in the company according to your security needs!
Features such as password policies, multi-eyes principle, workflow and
task system makes management productive and safe.

The integrated rights management system with data transfer option and
automatic synchronization with Active Directory ensures that your
employees can only access data which they are entitled to."

Passwords of Password Safe and Repository Enterprise users are stored
as raw, unsalted MD5 hash values and thus are insufficiently protected
from attackers with access to the password management software database.

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Vulnerability Details:

The SySS GmbH found out that user passwords are stored as raw, unsalted
MD5 hash values in the table tdUsers of the databases of the password
management software Password Safe and Repository Enterprise.

The use of a cryptographic one-way hash function MD5 without using a 
salt for storing sensitive data like user passwords allows an attacker
with access to this data to perform efficient password guessing attacks
using pre-computed dictionaries, for instance rainbow tables.

The vulnerability concerning the insecure storage of user password
information as raw, unsalted MD5 hash values affects both the online and
the offline mode of the password management software.

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Proof of Concept (PoC):

When using the change password functionality, the following SQL
statement is used for storing the raw, unsalted MD5 hash value of the
new login password in the database table tdUsers:

UPDATE tdUsers SET LoginPassword = 'ef2eb17e3a46818e63bf209aa58da9aa',
LastLogin = julianday('<DATE>'), LastPasswordChange = julianday('<DATE>'),
ChangeDate = julianday('<DATE>'), LastPasswords = 
'9e96559b23ad93f0b8990539331441ca' WHERE ID = 2

In this example, the password "Passw0rd2015" was set, as the following
output shows:

$ echo -n "Passw0rd2015" | md5sum
ef2eb17e3a46818e63bf209aa58da9aa  -

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Solution:

According to information by the MATESO GmbH, the described security
issue has been fixed in the software version 7.5.0.2255 that was
released on October 5, 2015.

Please contact the manufacturer for further information or support.

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Disclosure Timeline:

2015-07-09: Vulnerability reported to manufacturer
2015-07-09: Manufacturer acknowledges e-mail with SySS security advisory          
2015-07-30: Scheduling of the publication date in agreement with the
            manufacturer
2015-10-02: Rescheduling of the publication date in agreement with the
            manufacturer
2015-10-12: Public release of security advisory on agreed publication
            date

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References:

[1] Product Web Site for Password Safe and Repository Enterprise 
    http://www.passwordsafe.de/en/products/business/enterprise-edition.html
[2] SySS Security Advisory SYSS-2015-037
    https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2015-037.txt
[3] SySS Responsible Disclosure Policy
    https://www.syss.de/en/news/responsible-disclosure-policy/

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Credits:

This security vulnerability was found by Matthias Deeg of the SySS GmbH.

E-Mail: matthias.deeg (at) syss.de
Public Key: https://www.syss.de/fileadmin/dokumente/Materialien/PGPKeys/Matthias_Deeg.asc
Key fingerprint = D1F0 A035 F06C E675 CDB9 0514 D9A4 BF6A 34AD 4DAB

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Disclaimer:

The information provided in this security advisory is provided "as is" 
and without warranty of any kind. Details of this security advisory may 
be updated in order to provide as accurate information as possible. The
latest version of this security advisory is available on the SySS Web 
site.

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Copyright:

Creative Commons - Attribution (by) - Version 3.0
URL: http://creativecommons.org/licenses/by/3.0/deed.en

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