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OpenConext-EngineBlock 5.7.3 Cross Site Scripting

OpenConext-EngineBlock 5.7.3 Cross Site Scripting
Posted Jul 13, 2018
Authored by Andrew Klaus

OpenConext-EngineBlock versions 5.7.0 through 5.7.3suffers from a cross site scripting vulnerability.

tags | exploit, xss
advisories | CVE-2018-1000611
MD5 | 0f69b9dff062062f1f42999854188322

OpenConext-EngineBlock 5.7.3 Cross Site Scripting

Change Mirror Download
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XSS vulnerabilities were found in multiple pages that allows an attacker to
inject arbitrary web scripts.

The Twig PHP extension configuration was not sanitizing user input before
display it to the user.

Issues fixed in version 5.7.4 and 5.8.0. Git commit here:
https://github.com/OpenConext/OpenConext-engineblock/pull/566

PoC URLs:
https://engine.example.org/authentication/idp/help-discover?%22%3E%3Cscript%3Ealert(%27XSS%27)%3C/script%3E
https://engine.example.org/authentication/idp/single-sign-on?%22%3E%3Cscript%3Ealert(%27XSS%27)%3C/script%3E

CVE assigned: CVE-2018-1000611

Timeline:
- - - 2018-06-29: Notified SURFnet about the vulnerability
- - - 2018-07-04: Patch pull request created on Github
- - - 2018-07-04: CVE Requested
- - - 2018-07-05: Patch was merged on Github
- - - 2018-07-12: Announcing on Full Disclosure
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