{"id":479735,"date":"2023-08-09T10:43:58","date_gmt":"2023-08-09T10:43:58","guid":{"rendered":""},"modified":"2023-09-05T11:19:27","modified_gmt":"2023-09-05T11:19:27","slug":"xss","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/xss\/","title":{"rendered":"XSS"},"content":{"rendered":"<p>Cross-Site Scripting, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 XSS, l\u00e0 m\u1ed9t lo\u1ea1i l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt th\u01b0\u1eddng th\u1ea5y trong c\u00e1c \u1ee9ng d\u1ee5ng web. N\u00f3 cho ph\u00e9p k\u1ebb t\u1ea5n c\u00f4ng ch\u00e8n c\u00e1c t\u1eadp l\u1ec7nh \u0111\u1ed9c h\u1ea1i ph\u00eda m\u00e1y kh\u00e1ch v\u00e0o c\u00e1c trang web \u0111\u01b0\u1ee3c ng\u01b0\u1eddi d\u00f9ng kh\u00e1c xem. C\u00e1c t\u1eadp l\u1ec7nh n\u00e0y c\u00f3 th\u1ec3 b\u1ecf qua c\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t truy c\u1eadp v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c h\u00e0nh \u0111\u1ed9ng thay m\u1eb7t cho ng\u01b0\u1eddi d\u00f9ng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c m\u00e0 h\u1ecd kh\u00f4ng h\u1ec1 bi\u1ebft.<\/p>\n<h2>L\u1ecbch s\u1eed XSS v\u00e0 s\u1ef1 \u0111\u1ec1 c\u1eadp \u0111\u1ea7u ti\u00ean c\u1ee7a n\u00f3<\/h2>\n<p>Ngu\u1ed3n g\u1ed1c c\u1ee7a Cross-Site Scripting c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u c\u1ee7a Internet. L\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn XSS xu\u1ea5t hi\u1ec7n v\u00e0o n\u0103m 1999 khi Microsoft b\u00e1o c\u00e1o m\u1ed9t l\u1ed7i trong Internet Explorer. K\u1ec3 t\u1eeb \u0111\u00f3, s\u1ef1 hi\u1ec3u bi\u1ebft v\u1ec1 XSS ng\u00e0y c\u00e0ng t\u0103ng v\u00e0 n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt web ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 XSS<\/h2>\n<p>Cross-Site Scripting nh\u1eafm m\u1ee5c ti\u00eau \u0111\u1ebfn ng\u01b0\u1eddi d\u00f9ng c\u1ee7a m\u1ed9t trang web h\u01a1n l\u00e0 ch\u00ednh trang web \u0111\u00f3. Nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng khai th\u00e1c c\u00e1c \u1ee9ng d\u1ee5ng web \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7 \u0111\u1ec3 th\u1ef1c thi m\u00e3 \u0111\u1ed9c. \u0110\u00e2y l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p h\u1ea5p d\u1eabn \u0111\u1ec3 t\u1ed9i ph\u1ea1m m\u1ea1ng \u0111\u00e1nh c\u1eafp th\u00f4ng tin c\u00e1 nh\u00e2n, chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n phi\u00ean c\u1ee7a ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c chuy\u1ec3n h\u01b0\u1edbng ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn c\u00e1c trang web l\u1eeba \u0111\u1ea3o.<\/p>\n<h3>M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1 XSS<\/h3>\n<p>XSS kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t m\u1ed1i \u0111e d\u1ecda \u0111\u01a1n l\u1ebb m\u00e0 c\u00f2n l\u00e0 m\u1ed9t lo\u1ea1i t\u1ea5n c\u00f4ng ti\u1ec1m \u1ea9n. S\u1ef1 hi\u1ec3u bi\u1ebft v\u1ec1 XSS \u0111\u00e3 ph\u00e1t tri\u1ec3n c\u00f9ng v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 web v\u00e0 hi\u1ec7n nay n\u00f3 bao g\u1ed3m nhi\u1ec1u k\u1ef9 thu\u1eadt v\u00e0 chi\u1ebfn l\u01b0\u1ee3c kh\u00e1c nhau.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a XSS<\/h2>\n<p>XSS ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch thao t\u00fang c\u00e1c t\u1eadp l\u1ec7nh c\u1ee7a trang web, cho ph\u00e9p k\u1ebb t\u1ea5n c\u00f4ng \u0111\u01b0a m\u00e3 \u0111\u1ed9c v\u00e0o. \u0110\u00e2y l\u00e0 c\u00e1ch n\u00f3 th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng:<\/p>\n<ol>\n<li><strong>X\u1eed l\u00fd \u0111\u1ea7u v\u00e0o c\u1ee7a ng\u01b0\u1eddi d\u00f9ng<\/strong>: K\u1ebb t\u1ea5n c\u00f4ng x\u00e1c \u0111\u1ecbnh l\u1ed7 h\u1ed5ng trang web kh\u00f4ng x\u00e1c th\u1ef1c \u0111\u00fang c\u00e1ch ho\u1eb7c tho\u00e1t kh\u1ecfi d\u1eef li\u1ec7u nh\u1eadp c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<li><strong>Ch\u1ebf t\u1ea1o t\u1ea3i tr\u1ecdng<\/strong>: K\u1ebb t\u1ea5n c\u00f4ng t\u1ea1o ra m\u1ed9t t\u1eadp l\u1ec7nh \u0111\u1ed9c h\u1ea1i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c thi nh\u01b0 m\u1ed9t ph\u1ea7n m\u00e3 c\u1ee7a trang web.<\/li>\n<li><strong>M\u0169i ti\u00eam<\/strong>: T\u1eadp l\u1ec7nh \u0111\u01b0\u1ee3c t\u1ea1o th\u1ee7 c\u00f4ng s\u1ebd \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn m\u00e1y ch\u1ee7 v\u00e0 \u0111\u01b0\u1ee3c nh\u00fang v\u00e0o trang web.<\/li>\n<li><strong>Ch\u1ea5p h\u00e0nh<\/strong>: Khi ng\u01b0\u1eddi d\u00f9ng kh\u00e1c xem trang b\u1ecb \u1ea3nh h\u01b0\u1edfng, t\u1eadp l\u1ec7nh s\u1ebd th\u1ef1c thi trong tr\u00ecnh duy\u1ec7t c\u1ee7a h\u1ecd, th\u1ef1c hi\u1ec7n h\u00e0nh \u0111\u1ed9ng d\u1ef1 \u0111\u1ecbnh c\u1ee7a k\u1ebb t\u1ea5n c\u00f4ng.<\/li>\n<\/ol>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a XSS<\/h2>\n<ul>\n<li><strong>B\u1ea3n ch\u1ea5t l\u1eeba \u0111\u1ea3o<\/strong>: Th\u01b0\u1eddng kh\u00f4ng hi\u1ec3n th\u1ecb v\u1edbi ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<li><strong>Nh\u1eafm m\u1ee5c ti\u00eau ng\u01b0\u1eddi d\u00f9ng<\/strong>: \u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn ng\u01b0\u1eddi d\u00f9ng, kh\u00f4ng ph\u1ea3i m\u00e1y ch\u1ee7.<\/li>\n<li><strong>S\u1ef1 ph\u1ee5 thu\u1ed9c v\u00e0o tr\u00ecnh duy\u1ec7t<\/strong>: Th\u1ef1c thi trong tr\u00ecnh duy\u1ec7t c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<li><strong>Kh\u00f3 ph\u00e1t hi\u1ec7n<\/strong>: C\u00f3 th\u1ec3 tr\u1ed1n tr\u00e1nh c\u00e1c bi\u1ec7n ph\u00e1p an ninh truy\u1ec1n th\u1ed1ng.<\/li>\n<li><strong>T\u00e1c \u0111\u1ed9ng ti\u1ec1m t\u00e0ng<\/strong>: C\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u00e1nh c\u1eafp danh t\u00ednh, t\u1ed5n th\u1ea5t t\u00e0i ch\u00ednh ho\u1eb7c truy c\u1eadp tr\u00e1i ph\u00e9p.<\/li>\n<\/ul>\n<h2>C\u00e1c lo\u1ea1i XSS<\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng t\u00f3m t\u1eaft c\u00e1c lo\u1ea1i t\u1ea5n c\u00f4ng XSS ch\u00ednh:<\/p>\n<table>\n<thead>\n<tr>\n<th>Ki\u1ec3u<\/th>\n<th>S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>XSS \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef<\/td>\n<td>T\u1eadp l\u1ec7nh \u0111\u1ed9c h\u1ea1i \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef v\u0129nh vi\u1ec5n tr\u00ean m\u00e1y ch\u1ee7 m\u1ee5c ti\u00eau.<\/td>\n<\/tr>\n<tr>\n<td>XSS ph\u1ea3n \u00e1nh<\/td>\n<td>T\u1eadp l\u1ec7nh \u0111\u1ed9c h\u1ea1i \u0111\u01b0\u1ee3c nh\u00fang v\u00e0o URL v\u00e0 ch\u1ec9 ch\u1ea1y khi li\u00ean k\u1ebft \u0111\u01b0\u1ee3c nh\u1ea5p v\u00e0o.<\/td>\n<\/tr>\n<tr>\n<td>XSS d\u1ef1a tr\u00ean DOM<\/td>\n<td>T\u1eadp l\u1ec7nh \u0111\u1ed9c h\u1ea1i thao t\u00fang M\u00f4 h\u00ecnh \u0111\u1ed1i t\u01b0\u1ee3ng t\u00e0i li\u1ec7u (DOM) c\u1ee7a trang web, thay \u0111\u1ed5i c\u1ea5u tr\u00fac ho\u1eb7c n\u1ed9i dung c\u1ee7a trang web.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng XSS, v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n<h3>C\u00e1ch s\u1eed d\u1ee5ng<\/h3>\n<ul>\n<li>\u0102n c\u1eafp b\u00e1nh quy<\/li>\n<li>T\u1ea5n c\u00f4ng l\u1eeba \u0111\u1ea3o<\/li>\n<li>Ph\u00e2n ph\u1ed1i ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i<\/li>\n<\/ul>\n<h3>C\u00e1c v\u1ea5n \u0111\u1ec1<\/h3>\n<ul>\n<li>Tr\u1ed9m c\u1eafp d\u1eef li\u1ec7u<\/li>\n<li>Vi ph\u1ea1m quy\u1ec1n ri\u00eang t\u01b0<\/li>\n<li>H\u1eadu qu\u1ea3 ph\u00e1p l\u00fd<\/li>\n<\/ul>\n<h3>C\u00e1c gi\u1ea3i ph\u00e1p<\/h3>\n<ul>\n<li>X\u00e1c th\u1ef1c \u0111\u1ea7u v\u00e0o<\/li>\n<li>Ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt n\u1ed9i dung<\/li>\n<li>Ki\u1ec3m tra an ninh th\u01b0\u1eddng xuy\u00ean<\/li>\n<\/ul>\n<h2>\u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh<\/h2>\n<p>So s\u00e1nh XSS v\u1edbi c\u00e1c l\u1ed7 h\u1ed5ng web kh\u00e1c nh\u01b0 SQL Ti\u00eam, CSRF:<\/p>\n<ul>\n<li><strong>XSS<\/strong>: T\u1ea5n c\u00f4ng ng\u01b0\u1eddi d\u00f9ng, d\u1ef1a v\u00e0o script, \u0111i\u1ec3n h\u00ecnh l\u00e0 JavaScript.<\/li>\n<li><strong>Ti\u00eam SQL<\/strong>: T\u1ea5n c\u00f4ng c\u01a1 s\u1edf d\u1eef li\u1ec7u, s\u1eed d\u1ee5ng c\u00e1c truy v\u1ea5n SQL kh\u00f4ng \u0111\u00fang \u0111\u1ecbnh d\u1ea1ng.<\/li>\n<li><strong>CSRF<\/strong>: L\u1eeba ng\u01b0\u1eddi d\u00f9ng th\u1ef1c hi\u1ec7n c\u00e1c h\u00e0nh \u0111\u1ed9ng kh\u00f4ng mong mu\u1ed1n m\u00e0 kh\u00f4ng c\u00f3 s\u1ef1 \u0111\u1ed3ng \u00fd c\u1ee7a h\u1ecd.<\/li>\n<\/ul>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 c\u1ee7a t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn XSS<\/h2>\n<p>C\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi n\u1ed5i nh\u01b0 Tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o (AI) v\u00e0 H\u1ecdc m\u00e1y (ML) \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng XSS. C\u00e1c ti\u00eau chu\u1ea9n, khung v\u00e0 giao th\u1ee9c web m\u1edbi \u0111ang \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng t\u00ednh b\u1ea3o m\u1eadt t\u1ed5ng th\u1ec3 c\u1ee7a c\u00e1c \u1ee9ng d\u1ee5ng web.<\/p>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi XSS<\/h2>\n<p>C\u00e1c m\u00e1y ch\u1ee7 proxy nh\u01b0 OneProxy c\u00f3 th\u1ec3 cung c\u1ea5p th\u00eam m\u1ed9t l\u1edbp b\u1ea3o m\u1eadt ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng XSS. B\u1eb1ng c\u00e1ch gi\u00e1m s\u00e1t v\u00e0 l\u1ecdc l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp, proxy c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c m\u1eabu \u0111\u00e1ng ng\u1edd, c\u00e1c t\u1eadp l\u1ec7nh \u0111\u1ed9c h\u1ea1i ti\u1ec1m \u1ea9n v\u00e0 ch\u1eb7n ch\u00fang tr\u01b0\u1edbc khi ti\u1ebfp c\u1eadn tr\u00ecnh duy\u1ec7t c\u1ee7a ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<ul>\n<li><a href=\"https:\/\/owasp.org\/www-community\/attacks\/xss\/\" target=\"_new\" rel=\"noopener nofollow\">H\u01b0\u1edbng d\u1eabn OWASP XSS<\/a><\/li>\n<li><a href=\"https:\/\/www.w3.org\/TR\/CSP\/\" target=\"_new\" rel=\"noopener nofollow\">Ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt n\u1ed9i dung c\u1ee7a W3C<\/a><\/li>\n<li><a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/Security\/Cross-site_scripting\" target=\"_new\" rel=\"noopener nofollow\">M\u1ea1ng l\u01b0\u1edbi nh\u00e0 ph\u00e1t tri\u1ec3n Mozilla: XSS<\/a><\/li>\n<\/ul>\n<p>L\u01b0u \u00fd: Th\u00f4ng tin n\u00e0y \u0111\u01b0\u1ee3c cung c\u1ea5p cho m\u1ee5c \u0111\u00edch gi\u00e1o d\u1ee5c v\u00e0 n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f9ng v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 v\u00e0 bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt chuy\u00ean nghi\u1ec7p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 m\u1ea1nh m\u1ebd ch\u1ed1ng l\u1ea1i XSS v\u00e0 c\u00e1c l\u1ed7 h\u1ed5ng web kh\u00e1c.<\/p>","protected":false},"featured_media":479736,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-479735","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Cross-Site Scripting (XSS)<\/mark>","faq_items":[{"question":"What is Cross-Site Scripting (XSS)?","answer":"<p>Cross-Site Scripting, or XSS, is a type of security vulnerability commonly found in web applications. It allows attackers to inject malicious client-side scripts into web pages viewed by other users, potentially leading to actions performed without the users' knowledge or consent.<\/p>"},{"question":"When was XSS first mentioned, and what is its history?","answer":"<p>XSS was first mentioned in 1999 when Microsoft reported a bug in Internet Explorer. Since then, it has become one of the most common web security vulnerabilities, evolving with the growth of web technologies.<\/p>"},{"question":"How does XSS work, and what is its internal structure?","answer":"<p>XSS works by manipulating a website's scripts, allowing an attacker to introduce malicious code. It generally involves identifying a vulnerability in user input handling, crafting a malicious payload, injecting it into the web page, and then executing it within the user's browser.<\/p>"},{"question":"What are the key features of XSS?","answer":"<p>The key features of XSS include its deceptive nature, targeting of users (not servers), dependence on browsers, difficulty in detection, and potential impact such as identity theft or financial loss.<\/p>"},{"question":"What types of XSS exist, and how do they differ?","answer":"<p>Three primary types of XSS attacks are Stored XSS, Reflected XSS, and DOM-based XSS. Stored XSS is permanently stored on the target server; Reflected XSS is embedded in a URL and runs when the link is clicked; DOM-based XSS manipulates the web page's structure or content.<\/p>"},{"question":"What are the ways to use XSS, and what problems and solutions are related to it?","answer":"<p>XSS can be used for stealing cookies, phishing, or distributing malware. Problems include data theft, privacy violation, and legal consequences. Solutions encompass input validation, implementing content security policies, and conducting regular security audits.<\/p>"},{"question":"How does XSS compare to other similar web vulnerabilities?","answer":"<p>XSS primarily attacks users through scripts, typically JavaScript. In contrast, SQL Injection attacks databases using malformed SQL queries, while CSRF tricks users into performing unwanted actions without consent.<\/p>"},{"question":"What are the future perspectives and technologies related to XSS?","answer":"<p>Future perspectives include the application of AI and ML to detect and prevent XSS attacks, and the development of new web standards, frameworks, and protocols to enhance overall security.<\/p>"},{"question":"How can proxy servers like OneProxy be associated with XSS?","answer":"<p>Proxy servers like OneProxy can provide an additional layer of security against XSS by monitoring and filtering traffic, identifying suspicious patterns or potentially malicious scripts, and blocking them before reaching the user's browser.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/479735","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/479735\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/479736"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=479735"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}