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Topic: Cross site scripting

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	Cross site scripting / XSS - How to find & fix it with a web scanner
		Cross Site Scripting (also known as XSS or CSS) is generally believed to be one of the most common application layer hacking techniques.
		Web sites that generate dynamic pages do not have complete control over how their outputs are interpreted by the client.
		Cross Site Scripting allows an attacker to embed malicious JavaScript, VBScript, ActiveX, HTML, or Flash into a vulnerable dynamic page to fool the user, executing the script on his machine in order to gather data.
	www.acunetix.com /websitesecurity/cross-site-scripting.htm (0 words)

	CERT Advisory CA-2000-02 Malicious HTML Tags Embedded in Client Web Requests
		Such scripts may be written in a variety of scripting languages and are run by the client's browser.
		Because the malicious scripts are executed in a context that appears to have originated from the targeted site, the attacker has full access to the document retrieved (depending on the technology chosen by the attacker), and may send data contained in the page back to their site.
		The first, disabling scripting languages in their browser, provides the most protection but has the side effect for many users of disabling functionality that is important to them.
	www.cert.org /advisories/CA-2000-02.html (2517 words)

	Cross site scripting
		Cross site scripting (XSS) is where one site manages to run a script on another site, with the privileges of you, the user.
		If the other site decided to abuse this situation (perhaps in order to get back at your site for wasting their bandwidth by hotlinking), they could rewrite the script hotlinked by your site, to make it do something unexpected, with as much abusive power as cross site scripting.
		Strictly speaking, these are not cross site scripting attacks, but the effects are the same; some content of the page is changed by a third party, so that sensitive information can be sent to them instead.
	www.howtocreate.co.uk /crosssite.html (5921 words)

	Cross Site Scripting (XSS) questions and answers
		Cross site scripting (also known as XSS) occurs when a web application gathers malicious data from a user.
		Filtering alone will not solve all cross site scripting attacks and it is suggested you also attempt to filter out (and) by translating them to ( and ), and also # and & by translating them to &#35 (#) and &#38 (&).
		Cross site scripting holes are gaining popularity among hackers as easy holes to find in large websites.
	www.cgisecurity.com /articles/xss-faq.shtml (0 words)

	Cross site scripting : Paul James
		Cross site scripting is the name given to web site vulnerabilities arising from the embedding of malicious HTML tags into a HTML document which is generated dynamically on the server.
		Sites that host discussion groups with web interfaces have long guarded against a vulnerability where one client embeds malicious HTML tags in a message intended for another client.
		In addition to scripting tags, other HTML tags such as the tag have the potential to be abused by an attacker.
	www.peej.co.uk /articles/cross-site-scripting.html (1598 words)

	Paper -- Cross Site Scripting -- TechnicalInfo.net
		Analysis of many sites has indicated that not only are the majority of sites vulnerable, but they are vulnerable to many different methods and much of their content is affected.
		An attacker may be able to poison the sites persistent cookies, thus modifying the cookie content and causing malicious code to be executed each time the user visits the trusted site.
		Should an attacker discover a CSS flaw with one application component, any crafted exploit URL will have to contain a valid session ID. By rigorously controlling the session ID timeout, the attacker will not be able make use of the flaw (other than affecting the attacker locally) outside of this period.
	www.technicalinfo.net /papers/CSS.html (6854 words)

	[No title] (Site not responding. Last check: )
		The heart of the cross-site scripting security issue is that if untrusted content can be introduced into a dynamic page, neither the server nor the client have enough information at hand to recognize that this has happened and take protective actions.
		When the user subsequently accesses the site, their browser sends the cookie and the Web site uses its value to modify how the page is displayed.
		Fortunately, sites that might serve as the conduit for self-replicating cross-site scripting — Web e-mail systems and BBSs, for instance — also are, in general, well attuned to the importance of filtering inputs.
	www.megasecurity.org /Info/cross-site_scripting.txt (3252 words)

	Web site security - Center for web application security
		Web site security is possibly today's most overlooked aspect of securing data.
		The Web Site Security Centre is a comprehensive knowledge base of articles and white papers dedicated to web security.
		The Web Site Security Center provides information about the most important web attacks, such as SQL injection and Cross site scripting.
	www.acunetix.com /websitesecurity (0 words)

	Cross Site Scripting Info
		It is an issue that is truly cross platform and is the result of unforeseen and unexpected interactions between various components of a set of interconnected complex systems.
		The sites where this poses the most potential danger are sites where users have some type of account or login and where they can perform actions with real world implications or access data that should not be publicly available.
		Although we do provide most of the necessary information for sites to protect themselves against this type of attack, there are still many open issues associated with this issue.
	httpd.apache.org /info/css-security (846 words)

	Greg Murray's Blog: Preventing Cross Site Scripting Attacks
		Cross site scripting (XSS) is basically using JavaScript to execute JavaScript from an unwanted domain in a page.
		Dynamic script injection to retrieve JSON data (also known as JSONP) can be powerful and useful as it decouples your client from the server of origin.
		Clicking a link to a site containing a cross site scripting vulnerability would cause a 3rd party script to be included along with your request and could expose your password, user id, or any other data.
	weblogs.java.net /blog/gmurray71/archive/2006/09/preventing_cros.html (2698 words)

	Cross site scripting software downloads (Site not responding. Last check: )
		Read more about Cross site scripting in software encyclopedia.
		In this no-clue Cross word, the grid is filled with numbers.Each number represents a letter.
		The Prestwood Load Balancer is a cross-web server, cross-platform web request dispatcher that distributes direct HTTP calls to various web servers, based on the total number of pending requests to each server and the average response time.
	www.freedownloadsoft.com /Cross+site+scripting (580 words)

	The Cross Site Scripting FAQ
		URL pointing to the part of the site which is vulnerable.
		Filtering alone will not solve all cross site scripting attacks and it is suggested you also attempt to filter out (and) by translating them to ( and ).
		Cross site scripting holes are gaining popularity among hackers as easy holes to find in large websites.
	face2interface.com /MYD/Developer_Tips/Cross_Site_Scripting.shtml (1699 words)

	XSS Cross Site Scripting
		Another worm might be able to craw random sites and run generic Cross-site Scripting and SQL Injection checks and send the results to their master who will use them to release more advance worms.
		Scripts – Several useful scripts have already been posted – interesting thing you may not have thought of before are being discussed and developed.
		The red cross search results (long URL) page is a PR 0, but I’ve found up to a PR 6 (someone on TW said they had a 7).
	seoblackhat.com /category/xss-cross-site-scripting (2310 words)

	What is cross-site scripting? - a definition from Whatis.com - see also: XSS, XSS hole
		Like other Web-based exploits, such as SQL injection, much of the blame for cross-site scripting is placed on the insecure applications that make it possible.
		Web server applications that generate pages dynamically are vulnerable to a cross-site scripting exploit if they fail to validate user input and to ensure that pages generated are properly encoded.
		A vulnerability that enables cross-site scripting is sometimes referred to as an XSS hole.
	searchsoftwarequality.techtarget.com /sDefinition/0,290660,sid92_gci1003431,00.html (447 words)

	What is a cross-site scripting attack?
		Cross-site scripting ('XSS' or 'CSS') is an attack that takes advantage of a Web site vulnerability in which the site displays content that includes un-sanitized user-provided data.
		That purpose of the malicious script is to attack other forum users who happen to select the hyperlink.
		Cross-site scripting attacks occur when an attacker takes advantage of such applications and creates a request with malicious data (such as a script) that is later presented to the user requesting it.
	www.imperva.com /application_defense_center/glossary/cross_site_scripting.html (545 words)

	Cross Site Scripting Info: Apache Specific (Site not responding. Last check: )
		CGI script distributed with Apache did not properly encode their output.
		If you do have other legitimate text/plain content on your site that is generated based on user input, you may need to configure your server to prevent IE from accessing it or change it to text/html so you can encode it.
		What is necessary to ensure that sites that legitimately use character sets with different encodings of special characters, such as UTF-7, are protected.
	www.apache.org /info/css-security/apache_specific.html (564 words)

	Cross-site scripting
		Because the malicious scripts are executed in a context that appears to have originated from the legitimate server, the attacker has full access to the document retrieved and may send data contained in the page back to their site.
		If the embedded script code has additional interactions capability with the legitimate server without alerting the victim, the attacker could develop and exploit that posted data to a different page on the legitimate Web server as shown in Figure 3.
		Cross-site scripting attacks can be avoided when a Web server adequately ensures that generated pages are properly encoded to prevent unintended execution of scripts.
	www-128.ibm.com /developerworks/tivoli/library/s-csscript (2242 words)

	perl.com: Preventing Cross-site Scripting Attacks
		The cross-site scripting attack is one of the most common, yet overlooked, security problems facing web developers today.
		If the web site does not check for this scripting code it may pass it verbatim back to the user's browser where it can cause all kinds of damage.
		This script is vulnerable to cross-site scripting attacks because it blindly prints out submitted form data.
	www.perl.com /pub/a/2002/02/20/css.html (1400 words)

	[Cross-site Scripting] Threat Classification - Web Application Security Consortium
		Cross-site Scripting (XSS) is an attack technique that forces a web site to echo attacker-supplied executable code, which loads in a user's browser.
		A Cross-site Scripted user could have his account hijacked (cookie theft), their browser redirected to another location, or possibly shown fraudulent content delivered by the web site they are visiting.
		Cross- site Scripting attacks essentially compromise the trust relationship between a user and the web site.
	www.webappsec.org /projects/threat/classes/cross-site_scripting.shtml (513 words)

	PHP Classes - PHP Classes blog: Improved browsing and cross site scripting prevention
		One of the most appreciated features of the PHPClasses site is the ability of view the contents files of a page without need to download it first.
		The PHPClasses site uses mod_gzip to serve all pages in compressed format, whether they were generated by PHP or not.
		Of course most e-commerce sites are not so weakly implemented, but you can always imagine myriad of situations on which a cross-site scripting exploits may cause major headaches.
	www.phpclasses.org /blog/post/55-Improved-browsing-and-cross-site-scripting-prevention.html (1669 words)

	Netcraft: Bank's own developers a much bigger problem than browsers
		Cross-site scripting (XSS) is a well known technique which involves injecting the text of code to be executed by the browser into urls that generate dynamic pages: attacks have been found by security researchers in a wide variety of products and specific sites over the last four years.
		Further, if the vulnerable site uses cookies, it may be possible for the fraudster to steal the user's session cookie and hence hijack the user's secure session.
		Although cross-site scripting has been a well known technique for over four years, it is an easy mistake for programmers to make, and can be an awkward one to test thoroughly.
	news.netcraft.com /archives/2004/07/18/banks_own_developers_a_much_bigger_problem_than_browsers.html (616 words)

	Cross Site Scripting - OWASP (Site not responding. Last check: )
		Cross-site scripting (XSS) attacks occur when an attacker uses a web application to send malicious code, generally in the form of a browser side script, to a different end user.
		Because it thinks the script came from a trusted source, the malicious script can access any cookies, session tokens, or other sensitive information retained by your browser and used with that site.
		Reflected attacks are those where the injected code is reflected off the web server, such as in an error message, search result, or any other response that includes some or all of the input sent to the server as part of the request.
	www.owasp.org /index.php/Cross_Site_Scripting (1141 words)

	Firepass 4100 SSL VPN "s" Cross-Site Scripting : Hackers Center : Internet Security Archive: Exploits, Patch, ... (Site not responding. Last check: )
		Hackers Center was born in 2000 as a hacking site.
		This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
		Enter Web Site Measurement Hacks, a guidebook that helps you understand your Web site visitors and how they contribute to your business's success.
	www.hackerscenter.com /archive/view.asp?id=23767 (925 words)

	Cross Site Scripting - PC Security Web Directory - Internet Safety - Spyware - Adware - Anti-Virus - Computer Repair (Site not responding. Last check: )
		Phpnuke cross site scripting vulnerability Hi nuke webmasters, Phpnuke cross site scripting...
		Cross-site scripting (XSS) is a type of computer security vulnerability typically found in web applications which can be used by an attacker to compromise the same origin policy of client-side...
		A Quick Look at Cross Site Scripting (Page 1 of 6) We may not be able to completely bulletproof our...
	www.pcsecurityinc.com /index.php?c=48 (284 words)

	Prevent a cross-site scripting attack
		Now that the script to hack the user ID and password is ready, the attacker sends e-mails and posts with attractive offers to banking Web site users employing this link.
		The malicious script introduced by the attacker is executed by the browser and the data is passed to the hacker's Web site.
		By suitably inserting script code into the URL that invokes the portion of the site that uses cookies and is vulnerable, the attacker captures the cookies and can cause damage to content as well as mimic business functions and perform fake transactions.
	www-106.ibm.com /developerworks/library/wa-secxss/?ca=dgr-lnxw02PreventXSS (2423 words)

	ha.ckers.org web application security lab - Archive » Cross Site Scripting Vulnerability in Google
		Because this lives on the http://www.google.com/ domain it is not subject to cross domain policy restrictions that have typically protected Google from these attacks in the past.
		One of the worst parts of this is that it does not require you to be logged in to exploit this cross site scripting vulnerability.
		So back to the cross site scripting vector, since that is by far the most dangerous.
	ha.ckers.org /blog/20060704/cross-site-scripting-vulnerability-in-google (1517 words)

	Acunetix Security Software - news
		The affected site was shut down within hours of the attack being launched.
		Microsoft, is reported to have been aware of this vulnerability for over a week but, at time of writing, has not yet fixed it.
		Hackers deceived their victims by injecting and running malicious code on the genuine PayPal website by using a technique called Cross Site Scripting (XXS).
	www.acunetix.com /news (0 words)

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