Title: Chipmunk Guestbook AddEntry.PHP HTML Injection Vulnerability
Severity: MODERATE
Description:
Chipmunk Guestbook is a guestbook script written in PHP.
Chipmunk Guestbook is prone to an HTML-injection vulnerability. The application fails to properly sanitize user-supplied input before using it in dynamically generated content. Specifically, it fails to sanitize HTML and script code from input submitted to the 'homepage' variable of the 'addentry.php' script. This input will be stored persistently on the affected site and may be rendered by a victim user when the message is viewed.
Attacker-supplied HTML and script code would execute in the context of the affected site, potentially allowing an attacker to steal cookie-based authentication credentials or to control how the site is rendered to the user; other attacks are also possible.
This issue affects version 1.4; other versions may also be vulnerable.
Affected Products:
- Chipmunk PHP Scripts Chipmunk Guestbook 1.4
References:
- Chipmunk: Chipmunk Scripts Homepage
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