{"id":9838,"date":"2019-11-15T17:40:52","date_gmt":"2019-11-15T10:40:52","guid":{"rendered":""},"modified":"2024-06-19T17:12:14","modified_gmt":"2024-06-19T10:12:14","slug":"tan-cong-ddos-ssdp-la-gi","status":"publish","type":"post","link":"https:\/\/vnso.vn\/en\/tan-cong-ddos-ssdp-la-gi\/","title":{"rendered":"T\u1ea5n c\u00f4ng DDoS SSDP l\u00e0 g\u00ec?"},"content":{"rendered":"

1. Cu\u1ed9c t\u1ea5n c\u00f4ng DDOS SSDP l\u00e0 g\u00ec?<\/strong><\/span><\/h2>\n

T\u1ea5n c\u00f4ng SSDP l\u00e0 m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n DDOS d\u1ef1a tr\u00ean c\u00e1c ph\u1ea3n \u1ee9ng. Khai th\u00e1c c\u00e1c giao th\u1ee9c m\u1ea1ng UPnP \u0111\u1ec3 g\u1eedi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i \u0111\u1ebfn n\u1ea1n nh\u00e2n m\u1ee5c ti\u00eau. \u00c1p \u0111\u1ea3o c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u1ee7a m\u1ee5c ti\u00eau v\u00e0 l\u1ea5y t\u00e0i nguy\u00ean web c\u1ee7a h\u1ecd ngo\u1ea1i tuy\u1ebfn.<\/span>
\nD\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 mi\u1ec5n ph\u00ed \u0111\u1ec3 ki\u1ec3m tra xem IP Public c\u1ee7a b\u1ea1n c\u00f3 b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb SSDP n\u00e0o b\u1ecb l\u1ed9 hay kh\u00f4ng. Check SSDP DDoS vulnerability.<\/span><\/p>\n

\"ssdp
\n2. Cu\u1ed9c t\u1ea5n c\u00f4ng SSDP ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/span><\/h2>\n

Giao th\u1ee9c SSDP \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb UPnP ph\u00e1t s\u00f3ng s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a ch\u00fang. \u0110\u1eb7c bi\u1ec7t cho c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c tr\u00ean m\u1ea1ng. V\u00ed d\u1ee5: khi m\u00e1y in UPnP \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t m\u1ea1ng th\u00f4ng th\u01b0\u1eddng. Sau khi nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ecba ch\u1ec9 IP m\u00e1y in c\u00f3 th\u1ec3 qu\u1ea3ng c\u00e1o d\u1ecbch v\u1ee5 c\u1ee7a m\u00ecnh t\u1edbi c\u00e1c m\u00e1y t\u00ednh tr\u00ean m\u1ea1ng. B\u1eb1ng c\u00e1ch g\u1eedi tin nh\u1eafn \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IP ho\u1eb7c \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u1ecba ch\u1ec9 multicast. Sau \u0111\u00f3, m\u00e1y in s\u1ebd ph\u1ea3n h\u1ed3i tr\u1ef1c ti\u1ebfp v\u1edbi m\u00e1y t\u00ednh \u0111\u00f3. C\u00f9ng v\u1edbi m\u1ed9t danh s\u00e1ch \u0111\u1ea7y \u0111\u1ee7 m\u1ecdi th\u1ee9 m\u00e0 n\u00f3 cung c\u1ea5p. M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng SSDP cu\u1ed1i c\u00f9ng c\u1ee7a c\u00e1c d\u1ecbch v\u1ee5 b\u1eb1ng c\u00e1ch y\u00eau c\u1ea7u thi\u1ebft b\u1ecb ph\u1ea3n h\u1ed3i m\u1ee5c ti\u00eau b\u1ecb t\u1ea5n c\u00f4ng.<\/span><\/p>\n

D\u01b0\u1edbi \u0111\u00e2y l\u00e0 6 b\u01b0\u1edbc c\u1ee7a m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS SSDP:<\/strong><\/span><\/h3>\n

B\u01b0\u1edbi 1:<\/strong> \u0110\u1ea7u ti\u00ean k\u1ebb t\u1ea5n c\u00f4ng ti\u1ebfn h\u00e0nh qu\u00e9t t\u00ecm ki\u1ebfm c\u00e1c thi\u1ebft b\u1ecb Plug. Play c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m y\u1ebfu t\u1ed1 khu\u1ebfch \u0111\u1ea1i.<\/span>
\nB\u01b0\u1edbc 2:<\/strong> Khi k\u1ebb t\u1ea5n c\u00f4ng t\u00ecm ra c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng, ch\u00fang t\u1ea1o ra m\u1ed9t danh s\u00e1ch t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb ph\u1ea3n h\u1ed3i.<\/span>
\nB\u01b0\u1edbc 3:<\/strong> K\u1ebb t\u1ea5n c\u00f4ng t\u1ea1o ra m\u1ed9t g\u00f3i UDP v\u1edbi \u0111\u1ecba ch\u1ec9 IP gi\u1ea3 m\u1ea1o c\u1ee7a n\u1ea1n nh\u00e2n nh\u1eafm \u0111\u1ebfn.<\/span>
\nB\u01b0\u1edbc 4:<\/strong> K\u1ebb t\u1ea5n c\u00f4ng sau \u0111\u00f3 s\u1eed d\u1ee5ng botnet \u0111\u1ec3 g\u1eedi c\u00e1c g\u00f3i gi\u1ea3 m\u1ea1o \u0111\u1ebfn t\u1eebng thi\u1ebft b\u1ecb plug. \u0110\u1eb7c bi\u1ec7t Play v\u1edbi y\u00eau c\u1ea7u c\u00e0ng nhi\u1ec1u d\u1eef li\u1ec7u c\u00e0ng t\u1ed1t b\u1eb1ng c\u00e1ch \u0111\u1eb7t m\u1ed9t s\u1ed1 nh\u00e3n nh\u1ea5t \u0111\u1ecbnh. C\u1ee5 th\u1ec3 l\u00e0 SSDP: rootdevice ho\u1eb7c ssdp: all.<\/span>
\nB\u01b0\u1edbc 5:<\/strong> Do \u0111\u00f3 m\u1ed7i thi\u1ebft b\u1ecb s\u1ebd g\u1eedi ph\u1ea3n h\u1ed3i n\u1ea1n nh\u00e2n nh\u1eafm \u0111\u1ebfn v\u1edbi l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn h\u01a1n kho\u1ea3ng 30 l\u1ea7n so v\u1edbi y\u00eau c\u1ea7u c\u1ee7a k\u1ebb t\u1ea5n c\u00f4ng.<\/span>
\nB\u01b0\u1edbc 6:<\/strong> Sau khi n\u1ea1n nh\u00e2n nh\u1eafm \u0111\u1ebfn nh\u1eadn \u0111\u01b0\u1ee3c m\u1ed9t kh\u1ed1i l\u01b0\u1ee3ng l\u01b0u l\u01b0\u1ee3ng l\u1edbn t\u1eeb t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb v\u00e0 tr\u1edf n\u00ean qu\u00e1 t\u1ea3i. C\u00f3 kh\u1ea3 n\u0103ng d\u1eabn \u0111\u1ebfn vi\u1ec7c DOS \u0111\u1ed1i v\u1edbi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp h\u1ee3p ph\u00e1p.<\/span><\/p>\n

3. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 gi\u1ea3m nh\u1eb9 t\u1ea5n c\u00f4ng SSDP?<\/strong><\/span><\/h2>\n

\u0110\u1ed1i v\u1edbi qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng, gi\u1ea3m thi\u1ec3u ch\u00ednh l\u00e0 ch\u1eb7n l\u01b0u l\u01b0\u1ee3ng UDP \u0111\u1ebfn port 1900 tr\u00ean firewall. V\u1edbi \u0111i\u1ec1u ki\u1ec7n l\u01b0u l\u01b0\u1ee3ng kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 \u00e1p \u0111\u1ea3o c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng. Vi\u1ec7c l\u1ecdc l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u1eeb c\u1ed5ng n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng gi\u1ea3m thi\u1ec3u cu\u1ed9c t\u1ea5n c\u00f4ng nh\u01b0 v\u1eady. \u0110\u1ec3 t\u00ecm hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng SSDP. C\u00e1c chi\u1ebfn l\u01b0\u1ee3c gi\u1ea3m thi\u1ec3u h\u01a1n h\u00e3y kh\u00e1m ph\u00e1 c\u00e1c chi ti\u1ebft k\u1ef9 thu\u1eadt v\u1ec1 m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng SSDP.<\/span>
\nB\u1ea1n c\u00f3 mu\u1ed1n bi\u1ebft n\u1ebfu b\u1ea1n c\u00f3 m\u1ed9t d\u1ecbch v\u1ee5 SSDP c\u00f3 l\u1ed7 h\u1ed5ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng DDoS kh\u00f4ng? Nh\u01b0 \u0111\u00e3 \u0111\u1ec1 c\u1eadp, ch\u00fang t\u00f4i \u0111\u00e3 t\u1ea1o m\u1ed9t c\u00f4ng c\u1ee5 mi\u1ec5n ph\u00ed \u0111\u1ec3 ki\u1ec3m tra xem IP c\u00f4ng khai c\u1ee7a b\u1ea1n. C\u00f3 b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb SSDP n\u00e0o b\u1ecb l\u1ed9 hay kh\u00f4ng. \u0110\u1ec3 ki\u1ec3m tra l\u1ed7 h\u1ed5ng SSoS DDoS, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 mi\u1ec5n ph\u00ed n\u00e0y (free tool).<\/span><\/p>\n

4. Gi\u1ea3m thi\u1ec3u c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng SSDP nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/span><\/h2>\n

Lo\u1ea1i b\u1ecf c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng c\u00e1ch d\u1eebng t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng t\u1ea5n c\u00f4ng tr\u01b0\u1edbc khi n\u00f3 \u0111\u1ebfn. C\u00e1c g\u00f3i UDP nh\u1eafm \u0111\u1ebfn Port 1900 kh\u00f4ng \u0111\u01b0\u1ee3c \u1ee7y quy\u1ec1n cho m\u00e1y ch\u1ee7 g\u1ed1c. T\u1ea3i \u0111\u1ec3 nh\u1eadn l\u01b0u l\u01b0\u1ee3ng ban \u0111\u1ea7u r\u01a1i v\u00e0o m\u1ea1ng c\u1ee7a VNSO. Ch\u00fang t\u00f4i cung c\u1ea5p b\u1ea3o v\u1ec7 \u0111\u1ea7y \u0111\u1ee7 kh\u1ecfi t\u1ea5n c\u00f4ng SSDP v\u00e0 khu\u1ebfch \u0111\u1ea1i l\u1edbp 3 kh\u00e1c.<\/span><\/p>\n

M\u1eb7c d\u00f9 cu\u1ed9c t\u1ea5n c\u00f4ng s\u1ebd nh\u1eafm v\u00e0o m\u1ed9t \u0111\u1ecba ch\u1ec9 IP duy nh\u1ea5t. M\u1ea1ng Anycast c\u1ee7a ch\u00fang t\u00f4i s\u1ebd ph\u00e2n t\u00e1n t\u1ea5t c\u1ea3 l\u01b0u l\u01b0\u1ee3ng t\u1ea5n c\u00f4ng \u0111\u1ebfn \u0111i\u1ec3m kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n. C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u1ee3i th\u1ebf v\u1ec1 quy m\u00f4 \u0111\u1ec3 ph\u00e2n ph\u1ed1i l\u01b0u l\u01b0\u1ee3ng c\u1ee7a cu\u1ed9c t\u1ea5n c\u00f4ng. C\u00e2n b\u1eb1ng t\u1ea3i \u0111\u1ec3 d\u1ecbch v\u1ee5 kh\u00f4ng bao gi\u1edd b\u1ecb gi\u00e1n \u0111o\u1ea1n. C\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng kh\u00f4ng bao gi\u1edd \u00e1p \u0111\u1ea3o c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u1ee7a m\u00e1y ch\u1ee7 m\u1ee5c ti\u00eau. Trong s\u00e1u th\u00e1ng g\u1ea7n \u0111\u00e2y, h\u1ec7 th\u1ed1ng gi\u1ea3m thi\u1ec3u DDoS “Gatebot” c\u1ee7a ch\u00fang t\u00f4i \u0111\u00e3 ph\u00e1t hi\u1ec7n 6.329 cu\u1ed9c t\u1ea5n c\u00f4ng ph\u1ea3n x\u1ea1 \u0111\u01a1n gi\u1ea3n (c\u1ee9 sau 40 ph\u00fat). \u0110\u1eb7c bi\u1ec7t \u0111\u00e3 gi\u1ea3m thi\u1ec3u th\u00e0nh c\u00f4ng t\u1ea5t c\u1ea3 ch\u00fang.<\/span><\/p>\n

\"thue<\/a><\/p>\n

T\u00ecm hi\u1ec3u th\u00eam v\u1ec1 B\u1ea3o v\u1ec7 DDoS<\/a> <\/span>c\u1ee7a VNSO<\/p>","protected":false},"excerpt":{"rendered":"

1. Cu\u1ed9c t\u1ea5n c\u00f4ng DDOS SSDP l\u00e0 g\u00ec? T\u1ea5n c\u00f4ng SSDP l\u00e0 m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n DDOS d\u1ef1a tr\u00ean c\u00e1c ph\u1ea3n \u1ee9ng. Khai th\u00e1c c\u00e1c giao th\u1ee9c m\u1ea1ng UPnP \u0111\u1ec3 g\u1eedi l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i \u0111\u1ebfn n\u1ea1n nh\u00e2n m\u1ee5c ti\u00eau. \u00c1p \u0111\u1ea3o c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng […]<\/p>","protected":false},"author":1,"featured_media":11372,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[156],"tags":[154,174,122],"yoast_head":"\nT\u1ea5n c\u00f4ng DDoS SSDP l\u00e0 g\u00ec?<\/title>\n<meta name=\"description\" content=\"T\u1ea5n c\u00f4ng SSDP l\u00e0 m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng t\u1eeb ch\u1ed1i d\u1ecbch v\u1ee5 ph\u00e2n t\u00e1n DDOS d\u1ef1a tr\u00ean c\u00e1c ph\u1ea3n \u1ee9ng. 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