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Description
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Multiple vulnerabilities have been reported in Public Knowledge Project Open Journal Systems, which can be exploited by malicious users to conduct script insertion attacks and compromise a vulnerable system and by malicious people to conduct cross-site scripting attacks and manipulate certain data.
1) Certain input is not properly sanitised in the "String::stripUnsafeHtml()" function within lib/pkp/classes/core/String.inc.php before being used. This can be exploited to insert arbitrary HTML and script code, which will be executed in a user's browser session in context of an affected site if malicious data is viewed.
2) Input passed via the "editor" and "callback" parameters to lib/pkp/lib/tinymce/jscripts/tiny_mce/plugins/ibrowser/ibrowser.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.
3) Input passed via "articleId" when handling submissions 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.
4) Input passed via the "param" parameter to lib/pkp/lib/tinymce/jscripts/tiny_mce/plugins/ibrowser/scripts/rfiles.php is not properly verified before being used to rename or delete files. This can be exploited to rename, move, or delete arbitrary files via directory traversal sequences and URL-encoded NULL bytes.
Note: This can further be exploited by users with "Author" role permissions to execute arbitrary PHP code by renaming and moving an uploaded file.
The vulnerabilities are reported in version 2.3.6. Prior versions may also be affected.
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