Red Hat Security Advisory 2012-0103-01 - SquirrelMail is a standards-based webmail package written in PHP. A cross-site scripting flaw was found in the way SquirrelMail performed the sanitization of HTML style tag content. A remote attacker could use this flaw to send a specially-crafted Multipurpose Internet Mail Extensions message that, when opened by a victim, would lead to arbitrary web script execution in the context of their SquirrelMail session. Multiple cross-site scripting flaws were found in SquirrelMail. A remote attacker could possibly use these flaws to execute arbitrary web script in the context of a victim's SquirrelMail session.
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