James Bercegay has reported some vulnerabilities in Gallery, which can be exploited by malicious people to conduct script insertion attacks and to bypass certain security restrictions.
1) Input passed to "getRemoteHostAddress()" via the X_FORWARDED_FOR HTTP header isn't properly sanitised before being saved. This can be exploited to spoof the IP address that is logged when adding comments in an album, or to execute arbitrary HTML and script code in a user's browser session in context of an affected website when a malicious comment is viewed.
2) Input passed in the session id isn't properly sanitised before being used. This can be exploited to delete arbitrary files accessible to the web server process.
The vulnerabilities have been reported in version 2 through 2.0.2.
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Subject: Gallery Script Insertion and Session Handling Vulnerabilities
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