source: https://www.securityfocus.com/bid/54456/info
Simple Machines is prone to multiple HTML-injection vulnerabilities because it fails to properly sanitize user-supplied input before using it in dynamically generated content.
Successful exploits will allow attacker-supplied HTML and script code to run in the context of the affected application, potentially allowing the attacker to steal cookie-based authentication credentials or control how the site is rendered to the user. Other attacks are also possible.
Simple Machines Forum 2.0.2is vulnerable; other versions may also be affected.
Proof of Concept:=================
The persistent input validation vulnerability can be exploited by remote attacker with local low privileged user account & low required
user inter action. For demonstration or reproduce ...
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URL: http://www.example.com/smf/index.php?action=admin;area=packages;sa=packageget;get;f5073d7837d8=5a2bdd540a245be265f26c102fff9626
Review: Smiley Sets > Add
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URL: http://www.example.com/smf/index.php?action=admin;area=smileys;sa=modifyset;set=2
Review: Newsletter > Add
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URL: http://www.example.com/smf/index.php?action=admin;area=news;sa=mailingmembers;b74f235ec=2b30f2b9aad6e26815e1c18594922b37
Review: Edit Membergroups & User/Groups Listing
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URL: http://www.example.com/smf/index.php?action=admin;area=membergroups;sa=index;b74f235ec=2b30f2b9aad6e26815e1c18594922b37
URL: http://www.example.com/smf/index.php?action=admin;area=membergroups;sa=add;b74f235ec=2b30f2b9aad6e26815e1c18594922b37
