Title: RETIRED: Simple Machines Forum Censored Words HTML Injection Vulnerability
Severity: HIGH
Description:
Simple Machines Forum (SMF) is an open-source web forum that is written in PHP. It will run on most UNIX and Linux variants as well as Microsoft Windows.
The application is prone to an HTML-injection vulnerability because it fails to properly sanitize user-supplied input before using it in dynamically generated content. An attacker can inject HTML code into dynamically generated HTML ('Bulletin Board Codes') content by defining a censored word with HTML content as a replacement and using the word with 'Bulletin Board Codes' IMG tags.
NOTE: To exploit this issue, the attacker must have privileges to edit censored words.
Attacker-supplied HTML and script code would run in the context of the affected browser, potentially allowing the attacker to steal cookie-based authentication credentials or to control how the site is rendered to the user. Other attacks are also possible.
Simple Machines Forum 1.1.7 is vulnerable; other versions may also be affected.
NOTE: This BID is being retired because an attacker needs administrative access to an affected application to exploit this issue. An attacker with such access would be able to compromise the application without having to exploit any issue.
Affected Products:
- Simple Machines SMF 1.1.7
References:
- SMF: SMF Homepage
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