{"id":100945,"date":"2021-08-08T16:22:46","date_gmt":"2021-08-08T14:22:47","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-setevyh-bibliotekah-yazykov-rust-i-go-pozvolyayushhaya-obojti-proverku-ip-adresov"},"modified":"2021-08-08T16:22:46","modified_gmt":"2021-08-08T14:22:47","slug":"uyazvimost-v-setevyh-bibliotekah-yazykov-rust-i-go-pozvolyayushhaya-obojti-proverku-ip-adresov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/uyazvimost-v-setevyh-bibliotekah-yazykov-rust-i-go-pozvolyayushhaya-obojti-proverku-ip-adresov","title":{"rendered":"Haavatavus Rusti ja Go v\u00f5rgu teeke, mis v\u00f5imaldab IP-aadressi kontrolli k\u00f5rvaldada","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Rust ja Go keelte standartraamatukogudes on tuvastatud haavatavused, mis on seotud ebat\u00e4pse IP-aadresside t\u00f6\u00f6tlemisega, sealhulgas kaheksandike numbritega aadresside anal\u00fc\u00fcsi funktsioonides. Haavatavused v\u00f5imaldavad rikkuda kehtivate aadresside kontrolli rakendustes, n\u00e4iteks loopback-interf\u00e4\u00e4side (127.x.x.x) v\u00f5i sisev\u00f5rgu alajaotuste aadresside kutsumise korral SSRF (serveripoolse p\u00e4ringu valeandmine) r\u00fcnnakute jaoks. Need haavatavused j\u00e4tkavad probleemide ts\u00fcklit, mida on varem tuvastatud node-netmask (JavaScript, CVE-2021-28918, CVE-2021-29418), private-ip (JavaScript, CVE-2020-28360), ipaddress (Python, CVE-2021-29921), Data::Validate::IP (Perl, CVE-2021-29662) ja Net::Netmask (Perl, CVE-2021-29424) raamatukogudes. <\/p>\n

Vastavalt spetsifikatsioonile stringiv\u00e4\u00e4rtused IP-aadresse<\/a>, mis algavad nulliga, tuleks t\u00f5lgendada kui kaheksandikke, kuid paljusid teeke ei arvestata selle omadusega ning nad lihtsalt viskavad nulli v\u00e4lja, k\u00e4sitledes v\u00e4\u00e4rtust kui k\u00fcmnendikku. N\u00e4iteks number 0177 kaheksandikus\u00fcsteemis on 127 k\u00fcmnendikus. R\u00fcndaja v\u00f5ib taotleda ressurssi, n\u00e4idates v\u00e4\u00e4rtust «0177.0.0.1», mis k\u00fcmnenditena vastab «127.0.0.1». Probleemset teeki kasutades ei tuvastaks rakendus, et aadress 0177.0.0.1 kuulub alamv\u00f5rku 127.0.0.1\/8, kuid tegelikult p\u00e4ringu saatmise korral v\u00f5ib see suunata adressile «0177.0.0.1», mille v\u00f5rgufunktsioonid t\u00f6\u00f6tlevad kui 127.0.0.1. Samamoodi saab petta ka intraneti aadresside kontrolli, n\u00e4idates v\u00e4\u00e4rtusi nagu «012.0.0.1» (samav\u00e4\u00e4rne «10.0.0.1»). <\/p>\n

Rustis esines probleem standardteegis «std::net» (CVE-2021-29922). Selle teegi IP-aadresside parsimine viskab nulli aadressi v\u00e4\u00e4rtuste ees, kuid ainult juhul, kui on antud mitte rohkem kui kolm numbrit; n\u00e4iteks «0177.0.0.1» t\u00f5lgendatakse kehtetuks, kuid 010.8.8.8 ja 127.0.026.1 tagavad vale tulemuse. Rakendused, mis kasutavad std::net::IpAddr kasutaja m\u00e4\u00e4ratud aadresside parsimiseks, on potentsiaalselt vastuv\u00f5tlikud SSRF (Server-side request forgery), RFI (Remote File Inclusion) ja LFI (Local File Inclusion) r\u00fcnnakutele. Haavatavus on k\u00f5rvaldatud Rusti versioonis 1.53.0.

\"Haavatavus<\/center> <\/p>\n

Go keeles on probleem standardteegis «net» (CVE-2021-29923). Sisseehitatud funktsioon net.ParseCIDR j\u00e4tab nullid kaheksandike numbrite ees \u00f5petamata, mitte \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430. N\u00e4iteks v\u00f5ib r\u00fcndaja esitada v\u00e4\u00e4rtuse 00000177.0.0.1, mis kontrollimisel funktsioonis net.ParseCIDR(00000177.0.0.1\/24) t\u00f5lgendatakse kui 177.0.0.1\/24, mitte 127.0.0.1\/24. Probleem ilmneb ka Kubernetes platvormil. Haavatavus on k\u00f5rvaldatud Go versioonis 1.16.3 ja beetaversioonis 1.17.

\"Haavatavus<\/center>
\r\n \"Vaata\r\n
<\/div>\r\n <\/div><\/center>
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0445 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430\u0445 \u044f\u0437\u044b\u043a\u043e\u0432 Rust \u0438 Go \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u044b \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0435 \u0441 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0439 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u043e\u0439 IP-\u0430\u0434\u0440\u0435\u0441\u043e\u0432 \u0441 \u0432\u043e\u0441\u044c\u043c\u0438\u0440\u0438\u0447\u043d\u044b\u043c\u0438 \u0446\u0438\u0444\u0440\u0430\u043c\u0438 \u0432 \u0444\u0443\u043d\u043a\u0446\u0438\u044f\u0445 \u0440\u0430\u0437\u0431\u043e\u0440\u0430 \u0430\u0434\u0440\u0435\u0441\u0430. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u043e\u0431\u043e\u0439\u0442\u0438 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\u0440\u0430\u043d\u0435\u0435 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u0432 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430\u0445 node-netmask […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":100946,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-100945","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Vigus v\u00f5rgu raamatukogades Rusti ja Go keeltes, mis v\u00f5imaldab IP-aadressi kontrolli m\u00f6\u00f6da minna | ProHoster","description":"Rust ja Go standardraamatutes on tuvastatud haavatavusi, mis on seotud IP-aadresside vale t\u00f6\u00f6tlemisega, mis sisaldavad kaheksandikke aadressi parsimise funktsioonides.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/news\/uyazvimost-v-setevyh-bibliotekah-yazykov-rust-i-go-pozvolyayushhaya-obojti-proverku-ip-adresov","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430\u0445 \u044f\u0437\u044b\u043a\u043e\u0432 Rust \u0438 Go, 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