L4teral has reported some vulnerabilities in ProjectPier, which can be exploited by malicious people to conduct cross-site scripting and cross-site request forgery attacks, and by malicious users to conduct script insertion attacks.
1) Input passed to the "c" and "a" parameters in index.php is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
2) Input passed via messages, milestones, and via the display name of a user's profile, is not properly sanitised before being stored. This can be exploited to inject arbitrary HTML and script code, which is then executed in a user's browser session in context of an affected site when the malicious data is viewed.
3) The application allows users to perform certain actions via HTTP requests without performing any validity checks to verify the request. This can be exploited to perform actions with the privileges of a target user, who is tricked into visiting a malicious website.
The vulnerabilities are reported in versions prior to 0.8.0.1.
Solution: Update to version 0.8.0.2.
Provided and/or discovered by: L4teral
Original Advisory: http://www.projectpier.org/node/679
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Subject: ProjectPier Multiple Vulnerabilities
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