{"id":476296,"date":"2023-08-09T07:28:31","date_gmt":"2023-08-09T07:28:31","guid":{"rendered":""},"modified":"2023-09-05T11:12:26","modified_gmt":"2023-09-05T11:12:26","slug":"code-injection","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/code-injection\/","title":{"rendered":"Ch\u00e8n m\u00e3"},"content":{"rendered":"

Ch\u00e8n m\u00e3 l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong l\u1eadp tr\u00ecnh m\u00e1y t\u00ednh v\u00e0 ph\u00e1t tri\u1ec3n web \u0111\u1ec3 ch\u00e8n m\u00e3 ho\u1eb7c d\u1eef li\u1ec7u \u0111\u1ed9c h\u1ea1i v\u00e0o \u1ee9ng d\u1ee5ng ho\u1eb7c h\u1ec7 th\u1ed1ng m\u1ee5c ti\u00eau. \u0110\u00f3 l\u00e0 s\u1ef1 thay \u0111\u1ed5i tr\u00e1i ph\u00e9p c\u01a1 s\u1edf m\u00e3, th\u01b0\u1eddng nh\u1eb1m m\u1ee5c \u0111\u00edch x\u00e2m ph\u1ea1m b\u1ea3o m\u1eadt, \u0111\u00e1nh c\u1eafp d\u1eef li\u1ec7u ho\u1eb7c gi\u00e0nh quy\u1ec1n truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0o t\u00e0i nguy\u00ean. C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ti\u00eam m\u00e3 l\u00e0 m\u1ed1i \u0111e d\u1ecda ph\u1ed5 bi\u1ebfn \u0111\u1ed1i v\u1edbi c\u00e1c trang web v\u00e0 \u1ee9ng d\u1ee5ng v\u00e0 ch\u00fang c\u00f3 th\u1ec3 g\u00e2y ra h\u1eadu qu\u1ea3 nghi\u00eam tr\u1ecdng n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c gi\u1ea3m thi\u1ec3u th\u1ecfa \u0111\u00e1ng.<\/p>\n

L\u1ecbch s\u1eed v\u1ec1 ngu\u1ed3n g\u1ed1c c\u1ee7a vi\u1ec7c ti\u00eam m\u00e3 v\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn n\u00f3.<\/h2>\n

Kh\u00e1i ni\u1ec7m ti\u00eam m\u00e3 c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb nh\u1eefng ng\u00e0y \u0111\u1ea7u l\u1eadp tr\u00ecnh v\u00e0 ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m. T\u00e0i li\u1ec7u \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c ti\u00eam m\u00e3 c\u00f3 t\u1eeb cu\u1ed1i nh\u1eefng n\u0103m 1980 v\u00e0 \u0111\u1ea7u nh\u1eefng n\u0103m 1990 khi c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u b\u1ea3o m\u1eadt v\u00e0 tin t\u1eb7c b\u1eaft \u0111\u1ea7u khai th\u00e1c c\u00e1c l\u1ed7 h\u1ed5ng trong \u1ee9ng d\u1ee5ng \u0111\u1ec3 ch\u00e8n m\u00e3 t\u00f9y \u00fd. L\u1ed7 h\u1ed5ng \u201ctr\u00e0n b\u1ed9 \u0111\u1ec7m\u201d c\u1ed5 \u0111i\u1ec3n l\u00e0 m\u1ed9t trong nh\u1eefng v\u00ed d\u1ee5 s\u1edbm nh\u1ea5t v\u1ec1 vi\u1ec7c ti\u00eam m\u00e3, trong \u0111\u00f3 k\u1ebb t\u1ea5n c\u00f4ng s\u1ebd l\u00e0m tr\u00e0n b\u1ed9 \u0111\u1ec7m c\u1ee7a ch\u01b0\u01a1ng tr\u00ecnh v\u00e0 ghi \u0111\u00e8 l\u00ean b\u1ed9 nh\u1edb l\u00e2n c\u1eadn b\u1eb1ng c\u00e1c l\u1ec7nh \u0111\u1ed9c h\u1ea1i c\u1ee7a ri\u00eang ch\u00fang.<\/p>\n

Th\u00f4ng tin chi ti\u1ebft v\u1ec1 vi\u1ec7c ch\u00e8n m\u00e3. M\u1edf r\u1ed9ng ch\u1ee7 \u0111\u1ec1 Ch\u00e8n m\u00e3.<\/h2>\n

C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ch\u00e8n m\u00e3 th\u01b0\u1eddng l\u1ee3i d\u1ee5ng c\u00e1c l\u1ed7i l\u1eadp tr\u00ecnh, ch\u1eb3ng h\u1ea1n nh\u01b0 x\u00e1c th\u1ef1c \u0111\u1ea7u v\u00e0o kh\u00f4ng \u0111\u00fang, d\u1ecdn d\u1eb9p d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7 ho\u1eb7c x\u1eed l\u00fd d\u1eef li\u1ec7u b\u00ean ngo\u00e0i k\u00e9m. C\u00f3 nhi\u1ec1u h\u00ecnh th\u1ee9c ch\u00e8n m\u00e3 kh\u00e1c nhau, bao g\u1ed3m ch\u00e8n SQL, T\u1eadp l\u1ec7nh ch\u00e9o trang (XSS), Ch\u00e8n l\u1ec7nh v\u00e0 Th\u1ef1c thi m\u00e3 t\u1eeb xa (RCE). M\u1ed7i lo\u1ea1i t\u1ea5n c\u00f4ng nh\u1eafm v\u00e0o c\u00e1c l\u1ed7 h\u1ed5ng c\u1ee5 th\u1ec3 trong m\u00e3 c\u1ee7a \u1ee9ng d\u1ee5ng v\u00e0 c\u00f3 th\u1ec3 g\u00e2y ra nh\u1eefng h\u1eadu qu\u1ea3 ri\u00eang bi\u1ec7t.<\/p>\n

M\u1ee9c \u0111\u1ed9 nghi\u00eam tr\u1ecdng c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ch\u00e8n m\u00e3 bao g\u1ed3m t\u1eeb r\u00f2 r\u1ec9 d\u1eef li\u1ec7u nh\u1ecf \u0111\u1ebfn x\u00e2m ph\u1ea1m to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng. Tin t\u1eb7c c\u00f3 th\u1ec3 khai th\u00e1c vi\u1ec7c ch\u00e8n m\u00e3 \u0111\u1ec3 \u0111\u00e1nh c\u1eafp th\u00f4ng tin nh\u1ea1y c\u1ea3m, s\u1eeda \u0111\u1ed5i ho\u1eb7c x\u00f3a d\u1eef li\u1ec7u, gi\u00e0nh quy\u1ec1n truy c\u1eadp tr\u00e1i ph\u00e9p v\u00e0 th\u1eadm ch\u00ed bi\u1ebfn c\u00e1c h\u1ec7 th\u1ed1ng b\u1ecb x\u00e2m nh\u1eadp th\u00e0nh bot \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ti\u1ebfp theo.<\/p>\n

C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a m\u00e3 ti\u00eam. C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a t\u00ednh n\u0103ng ch\u00e8n m\u00e3.<\/h2>\n

C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ch\u00e8n m\u00e3 ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch ch\u00e8n m\u00e3 \u0111\u1ed9c v\u00e0o m\u1ed9t \u1ee9ng d\u1ee5ng ho\u1eb7c h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c nh\u1eafm m\u1ee5c ti\u00eau theo c\u00e1ch m\u00e3 \u0111\u00f3 \u0111\u01b0\u1ee3c th\u1ef1c thi c\u00f9ng v\u1edbi m\u00e3 h\u1ee3p ph\u00e1p. Qu\u00e1 tr\u00ecnh n\u00e0y th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn vi\u1ec7c t\u00ecm ra l\u1ed7 h\u1ed5ng cho ph\u00e9p k\u1ebb t\u1ea5n c\u00f4ng ch\u00e8n m\u00e3 c\u1ee7a ch\u00fang v\u00e0 sau \u0111\u00f3 k\u00edch ho\u1ea1t vi\u1ec7c th\u1ef1c thi m\u00e3 \u0111\u00f3.<\/p>\n

H\u00e3y xem x\u00e9t m\u1ed9t v\u00ed d\u1ee5 v\u1ec1 SQL SQL, m\u1ed9t trong nh\u1eefng ki\u1ec3u ch\u00e8n m\u00e3 ph\u1ed5 bi\u1ebfn nh\u1ea5t. Trong m\u1ed9t \u1ee9ng d\u1ee5ng web d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng, k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 nh\u1eadp c\u00e1c truy v\u1ea5n SQL \u0111\u01b0\u1ee3c t\u1ea1o \u0111\u1eb7c bi\u1ec7t v\u00e0o c\u00e1c tr\u01b0\u1eddng nh\u1eadp c\u1ee7a ng\u01b0\u1eddi d\u00f9ng. N\u1ebfu \u1ee9ng d\u1ee5ng kh\u00f4ng x\u00e1c th\u1ef1c v\u00e0 v\u1ec7 sinh \u0111\u1ea7u v\u00e0o n\u00e0y \u0111\u00fang c\u00e1ch, m\u00e3 SQL c\u1ee7a k\u1ebb t\u1ea5n c\u00f4ng s\u1ebd \u0111\u01b0\u1ee3c c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u01a1 b\u1ea3n th\u1ef1c thi, d\u1eabn \u0111\u1ebfn vi\u1ec7c truy c\u1eadp ho\u1eb7c thao t\u00fang d\u1eef li\u1ec7u tr\u00e1i ph\u00e9p.<\/p>\n

Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a Code Insert.<\/h2>\n

C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a vi\u1ec7c ch\u00e8n m\u00e3 bao g\u1ed3m:<\/p>\n

    \n
  1. \n

    Khai th\u00e1c l\u1ed7 h\u1ed5ng:<\/strong> Vi\u1ec7c ch\u00e8n m\u00e3 d\u1ef1a v\u00e0o vi\u1ec7c khai th\u00e1c c\u00e1c \u0111i\u1ec3m y\u1ebfu trong m\u00e3 c\u1ee7a \u1ee9ng d\u1ee5ng, ch\u1eb3ng h\u1ea1n nh\u01b0 x\u00e1c th\u1ef1c \u0111\u1ea7u v\u00e0o k\u00e9m ho\u1eb7c x\u1eed l\u00fd d\u1eef li\u1ec7u kh\u00f4ng an to\u00e0n.<\/p>\n<\/li>\n

  2. \n

    T\u1ea5n c\u00f4ng l\u00e9n l\u00fat:<\/strong> C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ti\u00eam m\u00e3 c\u00f3 th\u1ec3 kh\u00f3 b\u1ecb ph\u00e1t hi\u1ec7n v\u00ec ch\u00fang th\u01b0\u1eddng h\u00f2a tr\u1ed9n v\u1edbi h\u00e0nh vi \u1ee9ng d\u1ee5ng h\u1ee3p ph\u00e1p.<\/p>\n<\/li>\n

  3. \n

    C\u00e1c vect\u01a1 t\u1ea5n c\u00f4ng kh\u00e1c nhau:<\/strong> C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ch\u00e8n m\u00e3 c\u00f3 th\u1ec3 x\u1ea3y ra th\u00f4ng qua c\u00e1c \u0111i\u1ec3m truy c\u1eadp kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u1ea7u v\u00e0o c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, ti\u00eau \u0111\u1ec1 HTTP, cookie ho\u1eb7c th\u1eadm ch\u00ed c\u00e1c tr\u01b0\u1eddng bi\u1ec3u m\u1eabu \u1ea9n.<\/p>\n<\/li>\n

  4. \n

    T\u00e1c \u0111\u1ed9ng \u0111a d\u1ea1ng:<\/strong> T\u00f9y thu\u1ed9c v\u00e0o l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt v\u00e0 \u00fd \u0111\u1ecbnh c\u1ee7a k\u1ebb t\u1ea5n c\u00f4ng, c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ch\u00e8n m\u00e3 c\u00f3 th\u1ec3 g\u00e2y ra nhi\u1ec1u h\u1eadu qu\u1ea3 kh\u00e1c nhau, t\u1eeb r\u00f2 r\u1ec9 d\u1eef li\u1ec7u nh\u1ecf \u0111\u1ebfn x\u00e2m ph\u1ea1m to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng.<\/p>\n<\/li>\n<\/ol>\n

    C\u00e1c ki\u1ec3u ch\u00e8n m\u00e3<\/h2>\n

    C\u00f3 m\u1ed9t s\u1ed1 lo\u1ea1i t\u1ea5n c\u00f4ng ch\u00e8n m\u00e3, m\u1ed7i lo\u1ea1i nh\u1eafm m\u1ee5c ti\u00eau v\u00e0o c\u00e1c ph\u1ea7n kh\u00e1c nhau c\u1ee7a \u1ee9ng d\u1ee5ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 t\u1ed5ng quan v\u1ec1 c\u00e1c lo\u1ea1i ph\u1ed5 bi\u1ebfn nh\u1ea5t:<\/p>\n\n\n\n\n\n\n\n\n\n\n
    Ki\u1ec3u<\/th>\nS\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n
    Ti\u00eam SQL<\/td>\nKhai th\u00e1c l\u1ed7 h\u1ed5ng trong truy v\u1ea5n c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/td>\n<\/tr>\n
    T\u1eadp l\u1ec7nh ch\u00e9o trang (XSS)<\/td>\n\u0110\u01b0a c\u00e1c t\u1eadp l\u1ec7nh \u0111\u1ed9c h\u1ea1i v\u00e0o c\u00e1c trang web \u0111\u01b0\u1ee3c ng\u01b0\u1eddi d\u00f9ng xem.<\/td>\n<\/tr>\n
    L\u1ec7nh ti\u00eam<\/td>\nTh\u1ef1c thi c\u00e1c l\u1ec7nh t\u00f9y \u00fd tr\u00ean h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c nh\u1eafm m\u1ee5c ti\u00eau.<\/td>\n<\/tr>\n
    Th\u1ef1c thi m\u00e3 t\u1eeb xa (RCE)<\/td>\nCho ph\u00e9p k\u1ebb t\u1ea5n c\u00f4ng th\u1ef1c thi m\u00e3 t\u1eeb xa tr\u00ean m\u00e1y ch\u1ee7.<\/td>\n<\/tr>\n
    Ti\u00eam LDAP<\/td>\nNh\u1eafm m\u1ee5c ti\u00eau c\u00e1c \u1ee9ng d\u1ee5ng s\u1eed d\u1ee5ng LDAP \u0111\u1ec3 x\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng.<\/td>\n<\/tr>\n
    Th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i XML (XXE)<\/td>\nKhai th\u00e1c l\u1ed7 h\u1ed5ng c\u1ee7a tr\u00ecnh ph\u00e2n t\u00edch c\u00fa ph\u00e1p XML \u0111\u1ec3 \u0111\u1ecdc c\u00e1c t\u1ec7p c\u1ee5c b\u1ed9.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    C\u00e1ch s\u1eed d\u1ee5ng Ch\u00e8n m\u00e3, c\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng.<\/h2>\n

    C\u00e1ch s\u1eed d\u1ee5ng t\u00ednh n\u0103ng ch\u00e8n m\u00e3<\/h3>\n

    C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ch\u00e8n m\u00e3 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho m\u1ee5c \u0111\u00edch x\u1ea5u nh\u01b0ng ch\u00fang c\u0169ng c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u00f4ng c\u1ee5 c\u00f3 gi\u00e1 tr\u1ecb \u0111\u1ec3 c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u b\u1ea3o m\u1eadt v\u00e0 ng\u01b0\u1eddi ki\u1ec3m tra th\u00e2m nh\u1eadp x\u00e1c \u0111\u1ecbnh c\u00e1c l\u1ed7 h\u1ed5ng trong \u1ee9ng d\u1ee5ng. Hack \u0111\u1ea1o \u0111\u1ee9c v\u1edbi s\u1ef1 cho ph\u00e9p ph\u00f9 h\u1ee3p l\u00e0 m\u1ed9t c\u00e1ch quan tr\u1ecdng \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 s\u1eeda c\u00e1c l\u1ed7i b\u1ea3o m\u1eadt.<\/p>\n

    C\u00e1c v\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng<\/h3>\n

    C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ti\u00eam m\u00e3 g\u00e2y ra m\u1ed1i \u0111e d\u1ecda \u0111\u00e1ng k\u1ec3 cho c\u00e1c \u1ee9ng d\u1ee5ng web v\u00e0 vi\u1ec7c gi\u1ea3m thi\u1ec3u nh\u1eefng r\u1ee7i ro n\u00e0y \u0111\u00f2i h\u1ecfi m\u1ed9t s\u1ed1 bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba:<\/p>\n

      \n
    1. \n

      X\u00e1c th\u1ef1c \u0111\u1ea7u v\u00e0o v\u00e0 v\u1ec7 sinh:<\/strong> \u0110\u1ea3m b\u1ea3o r\u1eb1ng t\u1ea5t c\u1ea3 th\u00f4ng tin \u0111\u1ea7u v\u00e0o c\u1ee7a ng\u01b0\u1eddi d\u00f9ng \u0111\u1ec1u \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c v\u00e0 v\u1ec7 sinh k\u1ef9 l\u01b0\u1ee1ng tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng trong b\u1ea5t k\u1ef3 qu\u00e1 tr\u00ecnh th\u1ef1c thi m\u00e3 n\u00e0o.<\/p>\n<\/li>\n

    2. \n

      C\u00e1c c\u00e2u l\u1ec7nh \u0111\u00e3 chu\u1ea9n b\u1ecb v\u00e0 c\u00e1c truy v\u1ea5n \u0111\u01b0\u1ee3c tham s\u1ed1 h\u00f3a:<\/strong> S\u1eed d\u1ee5ng c\u00e1c c\u00e2u l\u1ec7nh \u0111\u00e3 chu\u1ea9n b\u1ecb s\u1eb5n v\u00e0 c\u00e1c truy v\u1ea5n \u0111\u01b0\u1ee3c tham s\u1ed1 h\u00f3a khi t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c ti\u00eam SQL.<\/p>\n<\/li>\n

    3. \n

      Ch\u00ednh s\u00e1ch b\u1ea3o m\u1eadt n\u1ed9i dung (CSP):<\/strong> Tri\u1ec3n khai CSP \u0111\u1ec3 h\u1ea1n ch\u1ebf c\u00e1c ngu\u1ed3n m\u00e0 trang web c\u00f3 th\u1ec3 t\u1ea3i t\u1eadp l\u1ec7nh, gi\u1ea3m thi\u1ec3u c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng XSS.<\/p>\n<\/li>\n

    4. \n

      T\u01b0\u1eddng l\u1eeda \u1ee9ng d\u1ee5ng web (WAF):<\/strong> S\u1eed d\u1ee5ng WAF \u0111\u1ec3 l\u1ecdc v\u00e0 gi\u00e1m s\u00e1t l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u1ebfn \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c m\u1eabu \u0111\u00e1ng ng\u1edd v\u00e0 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ti\u1ec1m \u1ea9n.<\/p>\n<\/li>\n

    5. \n

      \u0110\u00e1nh gi\u00e1 an ninh th\u01b0\u1eddng xuy\u00ean:<\/strong> Ti\u1ebfn h\u00e0nh ki\u1ec3m tra b\u1ea3o m\u1eadt th\u01b0\u1eddng xuy\u00ean v\u00e0 \u0111\u00e1nh gi\u00e1 l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 gi\u1ea3i quy\u1ebft c\u00e1c l\u1ed7 h\u1ed5ng ch\u00e8n m\u00e3 ti\u1ec1m \u1ea9n.<\/p>\n<\/li>\n<\/ol>\n

      C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 c\u00e1c so s\u00e1nh kh\u00e1c v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1 d\u01b0\u1edbi d\u1ea1ng b\u1ea3ng v\u00e0 danh s\u00e1ch.<\/h2>\n\n\n\n\n\n\n\n\n\n
      Ch\u00e8n m\u00e3<\/th>\nT\u1eadp l\u1ec7nh ch\u00e9o trang (XSS)<\/th>\nTi\u00eam SQL<\/th>\n<\/tr>\n<\/thead>\n
      Khai th\u00e1c<\/td>\nL\u1ed7 h\u1ed5ng trong m\u00e3<\/td>\nL\u1ed7 h\u1ed5ng trong truy v\u1ea5n c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/td>\n<\/tr>\n
      M\u1ee5c ti\u00eau<\/td>\nM\u00e3 \u1ee9ng d\u1ee5ng<\/td>\nC\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a \u1ee9ng d\u1ee5ng<\/td>\n<\/tr>\n
      S\u1ef1 va ch\u1ea1m<\/td>\nThao t\u00fang d\u1eef li\u1ec7u \u1ee9ng d\u1ee5ng, chi\u1ebfm quy\u1ec1n truy c\u1eadp tr\u00e1i ph\u00e9p<\/td>\n\u0102n c\u1eafp d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m c\u1ee7a ng\u01b0\u1eddi d\u00f9ng, chi\u1ebfm quy\u1ec1n \u0111i\u1ec1u khi\u1ec3n phi\u00ean<\/td>\n<\/tr>\n
      S\u1ef1 b\u1ea3o v\u1ec7<\/td>\nX\u00e1c th\u1ef1c \u0111\u1ea7u v\u00e0o, d\u1ecdn d\u1eb9p v\u00e0 t\u01b0\u1eddng l\u1eeda \u1ee9ng d\u1ee5ng web<\/td>\nM\u00e3 h\u00f3a \u0111\u1ea7u ra v\u00e0 c\u00e1c c\u00e2u l\u1ec7nh chu\u1ea9n b\u1ecb<\/td>\n<\/tr>\n
      Ki\u1ec3u t\u1ea5n c\u00f4ng<\/td>\nT\u1ea5n c\u00f4ng ph\u00eda m\u00e1y ch\u1ee7<\/td>\nT\u1ea5n c\u00f4ng ph\u00eda m\u00e1y ch\u1ee7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      C\u00e1c quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 trong t\u01b0\u01a1ng lai li\u00ean quan \u0111\u1ebfn vi\u1ec7c ch\u00e8n m\u00e3.<\/h2>\n

      Khi c\u00f4ng ngh\u1ec7 ti\u1ebfn b\u1ed9, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p v\u00e0 \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ti\u00eam m\u00e3 c\u0169ng t\u0103ng theo. Tri\u1ec3n v\u1ecdng trong t\u01b0\u01a1ng lai v\u1ec1 vi\u1ec7c ch\u00e8n m\u00e3 bao g\u1ed3m:<\/p>\n

        \n
      1. \n

        H\u1ecdc m\u00e1y \u0111\u1ec3 ph\u00e1t hi\u1ec7n x\u00e2m nh\u1eadp:<\/strong> Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c thu\u1eadt to\u00e1n h\u1ecdc m\u00e1y \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c ki\u1ec3u v\u00e0 h\u00e0nh vi ch\u00e8n m\u00e3 trong th\u1eddi gian th\u1ef1c.<\/p>\n<\/li>\n

      2. \n

        K\u1ef9 thu\u1eadt x\u00e1c th\u1ef1c \u0111\u1ea7u v\u00e0o n\u00e2ng cao:<\/strong> C\u1ea3i thi\u1ec7n c\u01a1 ch\u1ebf x\u00e1c th\u1ef1c \u0111\u1ea7u v\u00e0o \u0111\u1ec3 ng\u0103n ch\u1eb7n c\u00e1c h\u00ecnh th\u1ee9c ch\u00e8n m\u00e3 m\u1edbi.<\/p>\n<\/li>\n

      3. \n

        Containerization v\u00e0 Sandboxing:<\/strong> S\u1eed d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt \u0111\u00f3ng g\u00f3i v\u00e0 h\u1ed9p c\u00e1t \u0111\u1ec3 c\u00e1ch ly c\u00e1c \u1ee9ng d\u1ee5ng v\u00e0 gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng c\u1ee7a c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ti\u00eam m\u00e3.<\/p>\n<\/li>\n<\/ol>\n

        C\u00e1ch s\u1eed d\u1ee5ng ho\u1eb7c li\u00ean k\u1ebft m\u00e1y ch\u1ee7 proxy v\u1edbi vi\u1ec7c ch\u00e8n M\u00e3.<\/h2>\n

        M\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 gi\u00e1n ti\u1ebfp \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ch\u00e8n m\u00e3 b\u1eb1ng c\u00e1ch \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 \u1ee9ng d\u1ee5ng web m\u1ee5c ti\u00eau. M\u1eb7c d\u00f9 b\u1ea3n th\u00e2n c\u00e1c m\u00e1y ch\u1ee7 proxy kh\u00f4ng ch\u1ecbu tr\u00e1ch nhi\u1ec7m ch\u00e8n m\u00e3 nh\u01b0ng ch\u00fang c\u00f3 th\u1ec3 b\u1ecb k\u1ebb t\u1ea5n c\u00f4ng l\u1ee3i d\u1ee5ng \u0111\u1ec3 l\u00e0m x\u00e1o tr\u1ed9n ngu\u1ed3n g\u1ed1c v\u00e0 tr\u1ed1n tr\u00e1nh b\u1ecb ph\u00e1t hi\u1ec7n.<\/p>\n

        B\u1eb1ng c\u00e1ch \u0111\u1ecbnh tuy\u1ebfn l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp th\u00f4ng qua m\u00e1y ch\u1ee7 proxy, nh\u1eefng k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 g\u00e2y kh\u00f3 kh\u0103n cho c\u00e1c nh\u00f3m b\u1ea3o m\u1eadt trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh ngu\u1ed3n th\u1ef1c s\u1ef1 c\u1ee7a c\u00e1c n\u1ed7 l\u1ef1c ti\u00eam m\u00e3 \u0111\u1ed9c. Ngo\u00e0i ra, k\u1ebb t\u1ea5n c\u00f4ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng proxy \u0111\u1ec3 v\u01b0\u1ee3t qua c\u00e1c h\u1ea1n ch\u1ebf b\u1ea3o m\u1eadt d\u1ef1a tr\u00ean IP v\u00e0 truy c\u1eadp c\u00e1c \u1ee9ng d\u1ee5ng d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng t\u1eeb nhi\u1ec1u v\u1ecb tr\u00ed kh\u00e1c nhau.<\/p>\n

        \u0110\u1ed1i v\u1edbi c\u00e1c doanh nghi\u1ec7p cung c\u1ea5p d\u1ecbch v\u1ee5 proxy nh\u01b0 OneProxy (oneproxy.pro), vi\u1ec7c tri\u1ec3n khai c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt m\u1ea1nh m\u1ebd \u0111\u1ec3 ph\u00e1t hi\u1ec7n v\u00e0 ng\u0103n ch\u1eb7n l\u01b0u l\u01b0\u1ee3ng \u0111\u1ed9c h\u1ea1i, bao g\u1ed3m c\u1ea3 c\u00e1c n\u1ed7 l\u1ef1c ti\u00eam m\u00e3, l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft. Vi\u1ec7c gi\u00e1m s\u00e1t v\u00e0 ph\u00e2n t\u00edch th\u01b0\u1eddng xuy\u00ean nh\u1eadt k\u00fd proxy c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 x\u00e1c \u0111\u1ecbnh c\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng ng\u1edd v\u00e0 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ch\u00e8n m\u00e3 ti\u1ec1m \u1ea9n.<\/p>\n

        Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n

        \u0110\u1ec3 t\u00ecm hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 t\u00ednh n\u0103ng ch\u00e8n m\u00e3 v\u00e0 b\u1ea3o m\u1eadt \u1ee9ng d\u1ee5ng web, b\u1ea1n c\u00f3 th\u1ec3 kh\u00e1m ph\u00e1 c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n

          \n
        1. Ch\u00e8n m\u00e3 OWASP<\/a><\/li>\n
        2. W3schools \u2013 Ti\u00eam SQL<\/a><\/li>\n
        3. Acunetix \u2013 T\u00ecm hi\u1ec3u c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng ti\u00eam m\u00e3<\/a><\/li>\n
        4. CWE-94: Ch\u00e8n m\u00e3<\/a><\/li>\n<\/ol>\n

          B\u1eb1ng c\u00e1ch lu\u00f4n c\u1eadp nh\u1eadt th\u00f4ng tin v\u00e0 \u00e1p d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hay nh\u1ea5t v\u1ec1 b\u1ea3o m\u1eadt \u1ee9ng d\u1ee5ng web, doanh nghi\u1ec7p c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng c\u1ee7a m\u00ecnh kh\u1ecfi vi\u1ec7c ti\u00eam m\u00e3 v\u00e0 c\u00e1c l\u1ed7 h\u1ed5ng nghi\u00eam tr\u1ecdng kh\u00e1c. H\u00e3y nh\u1edb r\u1eb1ng, c\u00e1c bi\u1ec7n ph\u00e1p ch\u1ee7 \u0111\u1ed9ng l\u00e0 r\u1ea5t quan tr\u1ecdng trong b\u1ed1i c\u1ea3nh an ninh m\u1ea1ng ng\u00e0y c\u00e0ng ph\u00e1t tri\u1ec3n.<\/p>","protected":false},"featured_media":476297,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476296","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about Code Injection: A Comprehensive Guide<\/mark>","faq_items":[{"question":"What is code injection?","answer":"

          Code injection is a technique used in computer programming and web development to insert malicious code or data into a target application or system. It involves unauthorized alterations to the codebase, often with the intention of compromising security, stealing data, or gaining unauthorized access to resources.<\/p>"},{"question":"How did code injection originate?","answer":"

          The concept of code injection can be traced back to the late 1980s and early 1990s when security researchers and hackers started exploiting vulnerabilities in applications to insert arbitrary code. One of the earliest examples was the classic \"buffer overflow\" vulnerability, where an attacker would overflow a program's buffer and overwrite adjacent memory with their own malicious instructions.<\/p>"},{"question":"What are the different types of code injection attacks?","answer":"

          There are several types of code injection attacks, each targeting different vulnerabilities in an application. Some common types include SQL injection, Cross-Site Scripting (XSS), Command Injection, Remote Code Execution (RCE), LDAP Injection, and XML External Entity (XXE) attacks.<\/p>"},{"question":"How does code injection work?","answer":"

          Code injection attacks work by exploiting vulnerabilities in an application's code, such as poor input validation or insecure data handling. Attackers insert malicious code into the application, and when executed, it runs alongside legitimate code, enabling unauthorized actions.<\/p>"},{"question":"What are the key features of code injection?","answer":"

          Code injection attacks can be stealthy, diverse in impact, and can occur through various attack vectors. They rely on finding and exploiting vulnerabilities in the application's codebase.<\/p>"},{"question":"How can code injection be prevented?","answer":"

          To prevent code injection attacks, developers must implement robust input validation and sanitization techniques. Using prepared statements and parameterized queries for database interactions and employing Web Application Firewalls (WAFs) can also help mitigate risks.<\/p>"},{"question":"How can businesses and users protect themselves from code injection?","answer":"

          Regular security assessments, vulnerability scans, and implementing Content Security Policy (CSP) can assist in safeguarding applications from code injection attacks. Additionally, staying informed about the latest security practices and keeping software up to date are crucial steps.<\/p>"},{"question":"How can proxy servers be related to code injection?","answer":"

          While proxy servers themselves are not directly responsible for code injection, attackers can leverage them to obfuscate their origin and evade detection. Businesses offering proxy services must implement stringent security measures to detect and prevent malicious traffic, including code injection attempts.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476296","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\/476296\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/476297"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}