The Italian ISP Libero.it not check the HTTP POST Parameter "p_Query" on search query and displays the content of this variable without modification within the html form area. Security problems on Libero's 155.it allows attackers to conduct XSS attacks for the following URL: http://155.libero.it/pls/portal30/w155.cerca_nel_sito?p_Query= it is vulnerable for XSS via a malformed search query. PoC: - XSS in search function http://155.libero.it/pls/portal30/w155.cerca_nel_sito?p_Query= - Html injection (iframe) http://155.libero.it/pls/portal30/w155.cerca_nel_sito?p_Query= Previous vulnerabilities: http://lists.grok.org.uk/pipermail/full-disclosure/2007-March/061957.html http://lists.grok.org.uk/pipermail/full-disclosure/2007-March/061957.html http://lists.grok.org.uk/pipermail/full-disclosure/2007-March/061939.html http://lists.grok.org.uk/pipermail/full-disclosure/2007-April/062055.html http://lists.grok.org.uk/pipermail/full-disclosure/2007-July/064680.html http://lists.grok.org.uk/pipermail/full-disclosure/2007-July/064681.html -- Gianni Amato http://www.gianniamato.it/