{"id":28768,"date":"2024-03-01T01:18:20","date_gmt":"2024-02-29T18:18:20","guid":{"rendered":"https:\/\/kounselly.com\/?p=28768"},"modified":"2024-03-01T01:18:24","modified_gmt":"2024-02-29T18:18:24","slug":"xss-attacks","status":"publish","type":"post","link":"https:\/\/kounselly.com\/vi\/tan-cong-xss\/","title":{"rendered":"\u1ea2nh h\u01b0\u1edfng c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng XSS l\u00ean h\u1ec7 th\u1ed1ng doanh nghi\u1ec7p"},"content":{"rendered":"<p class=\"wp-block-paragraph\">XSS l\u00e0 m\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng th\u1ee9c t\u1ea5n c\u00f4ng ph\u1ed5 bi\u1ebfn nh\u1ea5t m\u00e0 c\u00e1c hacker s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea5n c\u00f4ng c\u00e1c trang web. Cu\u1ed9c t\u1ea5n c\u00f4ng XSS c\u00f3 th\u1ec3 g\u00e2y ra nh\u1eefng h\u1eadu qu\u1ea3 nghi\u00eam tr\u1ecdng \u0111\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng v\u00e0 ho\u1ea1t \u0111\u1ed9ng kinh doanh c\u1ee7a m\u1ed9t doanh nghi\u1ec7p. V\u1eady XSS l\u00e0 g\u00ec v\u00e0 \u1ea3nh h\u01b0\u1edfng c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng XSS l\u00ean h\u1ec7 th\u1ed1ng doanh nghi\u1ec7p nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">XSS l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cross-Site Scripting (XSS) l\u00e0 m\u1ed9t lo\u1ea1i t\u1ea5n c\u00f4ng m\u00e0 k\u1ebb t\u1ea5n c\u00f4ng ti\u00eam c\u00e1c \u0111o\u1ea1n m\u00e3 \u0111\u1ed9c h\u1ea1i v\u00e0o c\u00e1c trang web ho\u1eb7c \u1ee9ng d\u1ee5ng web. Khi ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp v\u00e0o c\u00e1c \u0111\u1ecba ch\u1ec9 trang web n\u00e0y, m\u00e3 \u0111\u1ed9c s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c thi tr\u00ean tr\u00ecnh duy\u1ec7t c\u1ee7a h\u1ecd, cho ph\u00e9p k\u1ebb t\u1ea5n c\u00f4ng thu th\u1eadp th\u00f4ng tin nh\u1ea1y c\u1ea3m, th\u1ef1c hi\u1ec7n c\u00e1c h\u00e0nh \u0111\u1ed9ng kh\u00f4ng mong mu\u1ed1n ho\u1eb7c th\u1eadm ch\u00ed ki\u1ec3m so\u00e1t trang web.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a XSS th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u v\u1edbi vi\u1ec7c k\u1ebb t\u1ea5n c\u00f4ng ti\u00eam m\u00e3 \u0111\u1ed9c v\u00e0o m\u1ed9t trang web ho\u1eb7c \u1ee9ng d\u1ee5ng web th\u00f4ng qua c\u00e1c c\u01a1 ch\u1ebf \u0111\u1ea7u v\u00e0o ng\u01b0\u1eddi d\u00f9ng nh\u01b0 bi\u1ec3u m\u1eabu, tham s\u1ed1 URL ho\u1eb7c th\u1eadm ch\u00ed trong c\u00e1c ph\u1ea7n m\u1ec1m ph\u00eda m\u00e1y ch\u1ee7. M\u00e3 \u0111\u1ed9c th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u00e8n d\u01b0\u1edbi d\u1ea1ng m\u00e3 JavaScript ho\u1eb7c HTML, v\u00e0 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean m\u00e1y ch\u1ee7 c\u1ee7a trang web ho\u1eb7c \u0111\u01b0\u1ee3c truy\u1ec1n \u0111\u1ebfn tr\u00ecnh duy\u1ec7t c\u1ee7a ng\u01b0\u1eddi d\u00f9ng m\u1ed9t c\u00e1ch kh\u00f4ng an to\u00e0n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp v\u00e0o trang web ch\u1ee9a m\u00e3 \u0111\u1ed9c XSS, tr\u00ecnh duy\u1ec7t c\u1ee7a h\u1ecd s\u1ebd th\u1ef1c thi m\u00e3 n\u00e0y m\u00e0 kh\u00f4ng c\u1ea7n s\u1ef1 \u0111\u1ed3ng \u00fd c\u1ee7a h\u1ecd. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c h\u1eadu qu\u1ea3 nghi\u00eam tr\u1ecdng nh\u01b0 \u0103n c\u1eafp d\u1eef li\u1ec7u ho\u1eb7c th\u1eadm ch\u00ed \u0111i\u1ec1u h\u01b0\u1edbng ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn c\u00e1c trang web gi\u1ea3 m\u1ea1o ho\u1eb7c \u0111\u1ed9c h\u1ea1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c lo\u1ea1i t\u1ea5n c\u00f4ng XSS<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c lo\u1ea1i t\u1ea5n c\u00f4ng XSS \u0111\u1ec1u c\u00f3 th\u1ec3 g\u00e2y ra nh\u1eefng h\u1eadu qu\u1ea3 nghi\u00eam tr\u1ecdng cho b\u1ea3o m\u1eadt c\u1ee7a trang web v\u00e0 ng\u01b0\u1eddi d\u00f9ng. C\u00f3 3 lo\u1ea1i t\u1ea5n c\u00f4ng XSS ph\u1ed5 bi\u1ebfn, c\u1ee5 th\u1ec3 nh\u01b0 sau<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Reflected XSS<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Reflected XSS, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Non-Persistent XSS, l\u00e0 lo\u1ea1i t\u1ea5n c\u00f4ng trong \u0111\u00f3 m\u00e3 \u0111\u1ed9c \u0111\u01b0\u1ee3c ch\u00e8n v\u00e0o m\u1ed9t trang web th\u00f4ng qua c\u00e1c tham s\u1ed1 URL ho\u1eb7c bi\u1ec3u m\u1eabu v\u00e0 \u0111\u01b0\u1ee3c tr\u1ea3 v\u1ec1 cho ng\u01b0\u1eddi d\u00f9ng ngay l\u1eadp t\u1ee9c. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng x\u1ea3y ra th\u00f4ng qua c\u00e1c li\u00ean k\u1ebft gi\u1ea3 m\u1ea1o ho\u1eb7c email l\u1eeba \u0111\u1ea3o. \u0110\u1ec3 ph\u00f2ng tr\u00e1nh Reflected XSS, c\u00e1c trang web c\u1ea7n th\u1ef1c hi\u1ec7n ki\u1ec3m tra v\u00e0 l\u1ecdc d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o m\u1ed9t c\u00e1ch c\u1ea9n th\u1eadn v\u00e0 m\u00e3 h\u00f3a d\u1eef li\u1ec7u tr\u01b0\u1edbc khi hi\u1ec3n th\u1ecb cho ng\u01b0\u1eddi d\u00f9ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Stored XSS<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Stored XSS, hay Persistent XSS, l\u00e0 lo\u1ea1i t\u1ea5n c\u00f4ng trong \u0111\u00f3 m\u00e3 \u0111\u1ed9c \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean m\u00e1y ch\u1ee7 c\u1ee7a trang web v\u00e0 th\u1ef1c thi m\u1ed7i khi m\u1ed9t ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp v\u00e0o trang web ho\u1eb7c trang c\u1ee5 th\u1ec3 ch\u1ee9a m\u00e3 \u0111\u1ed9c. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c m\u00e3 \u0111\u1ed9c \u0111\u01b0\u1ee3c th\u1ef1c thi tr\u00ean nhi\u1ec1u tr\u00ecnh duy\u1ec7t v\u00e0 thi\u1ebft b\u1ecb c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. \u0110\u1ec3 ph\u00f2ng tr\u00e1nh Stored XSS, c\u00e1c trang web c\u1ea7n ki\u1ec3m tra v\u00e0 l\u1ecdc d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o t\u1eeb ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00e3 h\u00f3a d\u1eef li\u1ec7u tr\u01b0\u1edbc khi l\u01b0u tr\u1eef n\u00f3 tr\u00ean m\u00e1y ch\u1ee7.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">DOM-based XSS<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DOM-based XSS x\u1ea3y ra khi m\u00e3 \u0111\u1ed9c \u0111\u01b0\u1ee3c th\u1ef1c thi trong m\u00f4i tr\u01b0\u1eddng DOM (Document Object Model) c\u1ee7a tr\u00ecnh duy\u1ec7t. Lo\u1ea1i t\u1ea5n c\u00f4ng n\u00e0y th\u01b0\u1eddng x\u1ea3y ra khi trang web kh\u00f4ng x\u1eed l\u00fd \u0111\u00fang c\u00e1ch d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o t\u1eeb ng\u01b0\u1eddi d\u00f9ng, cho ph\u00e9p m\u00e3 \u0111\u1ed9c th\u1ef1c thi tr\u1ef1c ti\u1ebfp tr\u00ean tr\u00ecnh duy\u1ec7t c\u1ee7a h\u1ecd. \u0110\u1ec3 ph\u00f2ng tr\u00e1nh DOM-based XSS, c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n c\u1ea7n ch\u00fa \u00fd ki\u1ec3m tra v\u00e0 x\u1eed l\u00fd \u0111\u00fang c\u00e1ch d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o t\u1eeb ng\u01b0\u1eddi d\u00f9ng v\u00e0 s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p an to\u00e0n \u0111\u1ec3 thao t\u00e1c v\u1edbi DOM.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">T\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ed7 h\u1ed5ng XSS \u0111\u1ebfn h\u1ec7 th\u1ed1ng doanh nghi\u1ec7p<\/h2>\n\n\n\n<p class=\"wp-block-paragraph translation-block\">XSS attack l\u00e0 m\u1ed9t trong nh\u1eefng m\u1ed1i \u0111e d\u1ecda l\u1edbn nh\u1ea5t \u0111\u1ed1i v\u1edbi <strong><a href=\"https:\/\/kounselly.com\/vi\/an-toan-thong-tin-mang\/\" target=\"_blank\" rel=\"noreferrer noopener\">an to\u00e0n th\u00f4ng tin m\u1ea1ng<\/a><\/strong>, v\u00e0 khi x\u1ea3y ra trong m\u1ed9t h\u1ec7 th\u1ed1ng doanh nghi\u1ec7p, n\u00f3 c\u00f3 th\u1ec3 g\u00e2y ra nh\u1eefng h\u1eadu qu\u1ea3 nghi\u00eam tr\u1ecdng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">M\u1ea5t d\u1eef li\u1ec7u quan tr\u1ecdng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng t\u00e1c \u0111\u1ed9ng nghi\u00eam tr\u1ecdng nh\u1ea5t c\u1ee7a l\u1ed7 h\u1ed5ng XSS l\u00e0 m\u1ea5t d\u1eef li\u1ec7u quan tr\u1ecdng c\u1ee7a doanh nghi\u1ec7p. K\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u00e3 \u0111\u1ed9c \u0111\u1ec3 \u0111\u00e1nh c\u1eafp th\u00f4ng tin nh\u1ea1y c\u1ea3m nh\u01b0 th\u00f4ng tin c\u00e1 nh\u00e2n c\u1ee7a kh\u00e1ch h\u00e0ng, th\u00f4ng tin t\u00e0i kho\u1ea3n ng\u00e2n h\u00e0ng, ho\u1eb7c th\u00f4ng tin \u0111\u0103ng nh\u1eadp v\u00e0o h\u1ec7 th\u1ed1ng qu\u1ea3n tr\u1ecb c\u1ee7a doanh nghi\u1ec7p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">R\u1ee7i ro b\u1ea3o m\u1eadt<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">XSS m\u1edf ra c\u00e1nh c\u1eeda cho hacker \u0111\u1ec3 ti\u00eam m\u00e3 \u0111\u1ed9c v\u00e0o trang web c\u1ee7a doanh nghi\u1ec7p, g\u00e2y ra r\u1ee7i ro b\u1ea3o m\u1eadt l\u1edbn. M\u00e3 \u0111\u1ed9c c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c h\u00e0nh \u0111\u1ed9ng kh\u00f4ng mong mu\u1ed1n nh\u01b0 thay \u0111\u1ed5i n\u1ed9i dung trang web, g\u1eedi th\u00f4ng tin \u0111\u1ebfn k\u1ebb t\u1ea5n c\u00f4ng, ho\u1eb7c th\u1eadm ch\u00ed ki\u1ec3m so\u00e1t to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Th\u1ea5t th\u1ebf v\u1ec1 uy t\u00edn<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng XSS th\u00e0nh c\u00f4ng c\u00f3 th\u1ec3 g\u00e2y ra t\u1ed5n th\u1ea5t l\u1edbn v\u1ec1 uy t\u00edn cho doanh nghi\u1ec7p. Khi th\u00f4ng tin c\u00e1 nh\u00e2n c\u1ee7a kh\u00e1ch h\u00e0ng b\u1ecb \u0111\u00e1nh c\u1eafp ho\u1eb7c trang web c\u1ee7a doanh nghi\u1ec7p b\u1ecb s\u1ef1 c\u1ed1, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 m\u1ea5t l\u00f2ng tin t\u1eeb ph\u00eda kh\u00e1ch h\u00e0ng v\u00e0 \u0111\u1ed1i t\u00e1c kinh doanh, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn h\u00ecnh \u1ea3nh v\u00e0 danh ti\u1ebfng c\u1ee7a doanh nghi\u1ec7p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Chi ph\u00ed ph\u1ee5c h\u1ed3i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">X\u1eed l\u00fd v\u00e0 kh\u1eafc ph\u1ee5c h\u1eadu qu\u1ea3 c\u1ee7a m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng XSS c\u00f3 th\u1ec3 t\u1ed1n k\u00e9m v\u1ec1 t\u00e0i nguy\u00ean v\u00e0 th\u1eddi gian cho doanh nghi\u1ec7p. Vi\u1ec7c ph\u1ea3i thay \u0111\u1ed5i m\u00e3 ngu\u1ed3n, ki\u1ec3m tra v\u00e0 c\u1eadp nh\u1eadt h\u1ec7 th\u1ed1ng \u0111\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c t\u1ea5n c\u00f4ng ti\u1ebfp theo c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh \u0111\u00f2i h\u1ecfi nhi\u1ec1u c\u00f4ng s\u1ee9c v\u00e0 chi ph\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra v\u00e0 ng\u0103n ch\u1eb7n t\u1ea5n c\u00f4ng XSS<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c ki\u1ec3m tra v\u00e0 ng\u0103n ch\u1eb7n t\u1ea5n c\u00f4ng XSS l\u00e0 m\u1ed9t ph\u1ea7n quan tr\u1ecdng c\u1ee7a chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o m\u1eadt c\u1ee7a m\u1ecdi doanh nghi\u1ec7p. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra v\u00e0 ng\u0103n ch\u1eb7n t\u1ea5n c\u00f4ng XSS \u0111\u1ec3 b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ki\u1ec3m tra \u0111\u1ea7u v\u00e0o<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p c\u01a1 b\u1ea3n nh\u1ea5t \u0111\u1ec3 ng\u0103n ch\u1eb7n t\u1ea5n c\u00f4ng XSS l\u00e0 ki\u1ec3m tra d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o t\u1eeb ng\u01b0\u1eddi d\u00f9ng. \u0110\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c nh\u1eadp v\u00e0o t\u1eeb ng\u01b0\u1eddi d\u00f9ng \u0111\u1ec1u \u0111\u01b0\u1ee3c ki\u1ec3m tra v\u00e0 l\u1ecdc \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t v\u00e0 m\u00e3 \u0111\u1ed9c. C\u00e1c k\u1ef9 thu\u1eadt ki\u1ec3m tra d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o c\u00f3 th\u1ec3 bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Escape Characters: Lo\u1ea1i b\u1ecf ho\u1eb7c m\u00e3 h\u00f3a c\u00e1c k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t nh\u01b0 \"\" \u0111\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c th\u1ef1c thi m\u00e3 JavaScript kh\u00f4ng mong mu\u1ed1n.<\/li>\n\n\n\n<li>Input Validation: X\u00e1c minh r\u1eb1ng d\u1eef li\u1ec7u nh\u1eadp v\u00e0o t\u1eeb ng\u01b0\u1eddi d\u00f9ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c quy t\u1eafc x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc \u0111\u1ec3 lo\u1ea1i b\u1ecf d\u1eef li\u1ec7u kh\u00f4ng h\u1ee3p l\u1ec7.<\/li>\n\n\n\n<li>White-Listing: Ch\u1ec9 cho ph\u00e9p d\u1eef li\u1ec7u nh\u1eadp v\u00e0o t\u1eeb ng\u01b0\u1eddi d\u00f9ng n\u1eb1m trong m\u1ed9t danh s\u00e1ch c\u00e1c gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">S\u1eed d\u1ee5ng CSP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Content Security Policy (CSP) l\u00e0 m\u1ed9t c\u01a1 ch\u1ebf b\u1ea3o m\u1eadt \u0111\u01b0\u1ee3c tri\u1ec3n khai tr\u00ean tr\u00ecnh duy\u1ec7t \u0111\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c th\u1ef1c thi m\u00e3 JavaScript kh\u00f4ng an to\u00e0n tr\u00ean trang web. CSP cho ph\u00e9p c\u00e1c quy t\u1eafc \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp \u0111\u1ec3 ch\u1ec9 cho ph\u00e9p c\u00e1c ngu\u1ed3n t\u00e0i nguy\u00ean c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ea3i v\u00e0 th\u1ef1c thi tr\u00ean trang web. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng CSP, c\u00e1c doanh nghi\u1ec7p c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro c\u1ee7a t\u1ea5n c\u00f4ng XSS b\u1eb1ng c\u00e1ch h\u1ea1n ch\u1ebf c\u00e1c ngu\u1ed3n t\u00e0i nguy\u00ean c\u00f3 th\u1ec3 th\u1ef1c thi m\u00e3 JavaScript.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Escape Output<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ngo\u00e0i vi\u1ec7c ki\u1ec3m tra d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o, vi\u1ec7c escape output l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p quan tr\u1ecdng kh\u00e1c \u0111\u1ec3 ng\u0103n ch\u1eb7n t\u1ea5n c\u00f4ng XSS. Khi hi\u1ec3n th\u1ecb d\u1eef li\u1ec7u t\u1eeb ng\u01b0\u1eddi d\u00f9ng tr\u00ean trang web, \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi d\u1eef li\u1ec7u \u0111\u1ec1u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a ho\u1eb7c escape \u0111\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c th\u1ef1c thi m\u00e3 JavaScript kh\u00f4ng mong mu\u1ed1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ki\u1ec3m tra b\u1ea3o m\u1eadt<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng h\u1ec7 th\u1ed1ng c\u1ee7a m\u00ecnh \u0111ang \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 kh\u1ecfi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng XSS, c\u00e1c doanh nghi\u1ec7p c\u1ea7n th\u1ef1c hi\u1ec7n c\u00e1c ki\u1ec3m tra b\u1ea3o m\u1eadt \u0111\u1ecbnh k\u1ef3 v\u00e0 ki\u1ec3m tra m\u00e3 ngu\u1ed3n \u0111\u1ec3 nh\u1eb1m ph\u00e1t hi\u1ec7n c\u0169ng nh\u01b0 kh\u1eafc ph\u1ee5c c\u00e1c l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt. Vi\u1ec7c ti\u1ebfn h\u00e0nh c\u00e1c cu\u1ed9c ki\u1ec3m tra b\u1ea3o m\u1eadt th\u01b0\u1eddng xuy\u00ean gi\u00fap \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt hi\u1ec7n t\u1ea1i v\u1eabn hi\u1ec7u qu\u1ea3 v\u00e0 ph\u00f2ng tr\u00e1nh \u0111\u01b0\u1ee3c c\u00e1c m\u1ed1i \u0111e d\u1ecda m\u1edbi nh\u1ea5t.\n<br>\n<br>\nXem th\u00eam: <strong><a href=\"https:\/\/kounselly.com\/vi\/phuong-phap-bao-mat-website\/\" target=\"_blank\" rel=\"noreferrer noopener\">C\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt website cho doanh nghi\u1ec7p<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ea5n c\u00f4ng XSS c\u00f3 th\u1ec3 g\u00e2y ra nh\u1eefng h\u1eadu qu\u1ea3 nghi\u00eam tr\u1ecdng cho b\u1ea3o m\u1eadt c\u1ee7a m\u1ed9t doanh nghi\u1ec7p. Tuy nhi\u00ean v\u1edbi c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba th\u00edch h\u1ee3p, c\u00e1c doanh nghi\u1ec7p c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro v\u00e0 b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng c\u1ee7a m\u00ecnh kh\u1ecfi c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng XSS. Vi\u1ec7c k\u1ebft h\u1ee3p c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m tra v\u00e0 ng\u0103n ch\u1eb7n XSS l\u00e0 m\u1ed9t ph\u1ea7n quan tr\u1ecdng c\u1ee7a chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o m\u1eadt to\u00e0n di\u1ec7n c\u1ee7a m\u1ecdi doanh nghi\u1ec7p.<\/p>","protected":false},"excerpt":{"rendered":"<p>XSS is one of the most common attack methods hackers use to attack websites. An XSS attack can have serious consequences for an enterprise&#8217;s systems and business operations. So what is XSS and what is the impact of XSS attacks on business systems? What is XSS? Cross-Site Scripting (XSS) is a type of attack in&#8230;<\/p>","protected":false},"author":99,"featured_media":28769,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_eb_attr":"","_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[357],"tags":[179],"class_list":["post-28768","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-it-management","tag-cybersecurity"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Impact of XSS attacks on enterprise systems - Kounselly<\/title>\n<meta name=\"description\" content=\"XSS is one of the most common attack methods hackers use to attack websites. 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