{"id":112410,"date":"2023-12-22T03:10:14","date_gmt":"2023-12-22T01:10:16","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/smtp-smuggling-novaya-tehnika-spufinga-pochtovyh-soobshhenij"},"modified":"2023-12-22T03:10:14","modified_gmt":"2023-12-22T01:10:16","slug":"smtp-smuggling-novaya-tehnika-spufinga-pochtovyh-soobshhenij","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/smtp-smuggling-novaya-tehnika-spufinga-pochtovyh-soobshhenij","title":{"rendered":"SMTP Smuggling \u2014 nj\u00eb teknik\u00eb e re p\u00ebr spofimin e mesazheve t\u00eb post\u00ebs","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

K\u00ebrkuesit nga kompania SEC Consult publikuan nj\u00eb teknik\u00eb t\u00eb re spufingu, e shkaktuar nga mos p\u00ebrputhjet n\u00eb ndjekjen e specifikacionit n\u00eb projekte t\u00eb ndryshme t\u00eb protokollit SMTP. Teknikat e propozuara t\u00eb sulmit lejojn\u00eb ndarjen e nj\u00eb mesazhi n\u00eb disa mesazhe t\u00eb ndryshme gjat\u00eb transferimit nga serveri SMTP burimor n\u00eb nj\u00eb tjet\u00ebr server SMTP, q\u00eb e interpreton ndryshe rendin p\u00ebr ndarjen e letrave t\u00eb transmetuara p\u00ebrmes nj\u00eb lidhjeje. Metoda mund t\u00eb p\u00ebrdoret p\u00ebr t\u00eb d\u00ebrguar mesazhe false n\u00eb em\u00ebr t\u00eb d\u00ebrguesve tjer\u00eb n\u00eb sh\u00ebrbimet e post\u00ebs q\u00eb verifikojn\u00eb d\u00ebrguesin fillestar. <\/p>\n

Problemi shkaktohet nga fakti se SMTP-server\u00ebt e ndrysh\u00ebm interpretojn\u00eb ndryshem sekuenc\u00ebn e p\u00ebrfundimit t\u00eb t\u00eb dh\u00ebnave, \u00e7ka mund t\u00eb \u00e7oj\u00eb n\u00eb ndarjen e nj\u00eb emaili n\u00eb disa gjat\u00eb nj\u00eb seance me SMTP-serverin. N\u00eb specifikimin p\u00ebr etiketimin e p\u00ebrfundimit t\u00eb transmetimit t\u00eb emailit, \u00ebsht\u00eb e p\u00ebrcaktuar sekuenca \u00ab\r\n\u00bb (pik\u00eb, e rrethuar nga simbolet e kthimit t\u00eb kartec\u00ebs dhe t\u00eb p\u00ebrmbysjes s\u00eb vij\u00ebs). Pas k\u00ebsaj sekuence mund t\u00eb pasojn\u00eb komandat p\u00ebr d\u00ebrgimin e nj\u00eb emaili tjet\u00ebr pa ndarjen e lidhjes. Disa SMTP-server\u00eb i p\u00ebrmbahen rrept\u00ebsisht k\u00ebrkes\u00ebs, por t\u00eb tjer\u00eb, p\u00ebr t\u00eb siguruar p\u00ebrputhshm\u00ebri me disa klient\u00eb t\u00eb rrall\u00eb t\u00eb post\u00ebs, e trajtojn\u00eb si ndar\u00ebs edhe sekuenca t\u00eb tilla si \u00ab\n\n\u00bb, \u00ab\n.\r\n\u00bb, \u00ab\r\n.\n\u00bb, \u00ab\r.\r\u00bb, \u00ab\r\n0.\r\n\u00bb dhe \u00ab\r\n0.\r\n\u00bb. <\/p>\n

Sulmi p\u00ebrfshin d\u00ebrgimin e nj\u00eb mesazhi n\u00eb serverin e par\u00eb, server<\/a>, i cili trajton vet\u00ebm ndar\u00ebsin \u00ab\r\n.\r\n\u00bb d\u00ebrgon nj\u00eb email, n\u00eb trupin e t\u00eb cilit \u00ebsht\u00eb nj\u00eb ndar\u00ebs alternativ, p.sh. \u00ab\r.\r\u00bb, pas t\u00eb cilit ndodhen komandat p\u00ebr d\u00ebrgimin e nj\u00eb mesazhi t\u00eb dyt\u00eb. Meqen\u00ebse serveri i par\u00eb i p\u00ebrmbahet rrept\u00ebsisht specifikacionit, ai e trajton sekuenc\u00ebn e marr\u00eb si nj\u00eb email t\u00eb vet\u00ebm. N\u00ebse m\u00eb pas, emaili d\u00ebrgohet n\u00eb nj\u00eb server transit ose tek serveri i marresit, q\u00eb gjithashtu e percepton sekuenc\u00ebn \u00ab\r.\r\u00bb si ndar\u00ebs, ai do t\u00eb p\u00ebrpunohet si dy emaila t\u00eb d\u00ebrguar ve\u00e7mas (emaili i dyt\u00eb mund t\u00eb d\u00ebrgohet nga nj\u00eb p\u00ebrdorues q\u00eb nuk \u00ebsht\u00eb autentikuar p\u00ebrmes \u00abAUTH LOGIN\u00bb, por duket si korrekt nga ana e marresit).

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

N\u00eb mesin e shembujve t\u00eb SMTP-server\u00ebve dhe sh\u00ebrbimeve q\u00eb pranojn\u00eb ndar\u00ebs alternativ\u00eb jan\u00eb Postfix, Sendmail, MS Exchange Online dhe Cisco Secure Email Gateway, nd\u00ebrsa mes sh\u00ebrbimeve t\u00eb post\u00ebs q\u00eb nuk filtrojn\u00eb ndar\u00ebsit e paq\u00ebllimt\u00eb nga emailat kur lidhen me server\u00eb t\u00eb tjer\u00eb \u2014 GMX, iCloud dhe Microsoft Outlook. <\/p>\n

P\u00ebr t\u00eb bllokuar problemin n\u00eb Postfix, n\u00eb versionet 3.8.1, 3.7.6, 3.6.10 dhe 3.5.20 \u00ebsht\u00eb shtuar nj\u00eb paramet\u00ebr \u00absmtpd_forbid_unauth_pipelining\u00bb, i cili shkakton nd\u00ebrprerjen e lidhjes n\u00eb rastin e p\u00ebrdorimit t\u00eb ndar\u00ebsve q\u00eb nuk p\u00ebrputhen me k\u00ebrkesat e RFC 2920 dhe RFC 5321. Aktualisht, ky paramet\u00ebr \u00ebsht\u00eb deaktivizuar si parazgjedhje, por planifikohet aktivizimi i tij si parazgjedhje n\u00eb deg\u00ebn Postfix 3.9, e cila pritet n\u00eb pranver\u00ebn e vitit 2024. N\u00eb deg\u00ebn 3.9 gjithashtu do t\u00eb p\u00ebrfshihen parametrat smtpd_forbid_bare_newline, q\u00eb jep nj\u00eb gabim kur p\u00ebrdoret vet\u00ebm simboli i nd\u00ebrrimit t\u00eb vij\u00ebs (\u00ab\n\u00bb) p\u00ebr ndarjen e rreshtave, q\u00eb shkel RFC 5321. <\/p>\n

N\u00eb versionin e ardhsh\u00ebm t\u00eb Sendmail 8.18.0.2 p\u00ebr mbrojtjen nga sulmi, n\u00eb srv_features \u00ebsht\u00eb propozuar nj\u00eb opsion 'o', q\u00eb p\u00ebrfshin trajtimin vet\u00ebm e sekuenc\u00ebs \u00ab\r\n.\r\n\u00bb. V\u00ebrehet se \u00e7aktivizimi i mb\u00ebshtetjes p\u00ebr ndar\u00ebs alternativ\u00eb mund t\u00eb ndikoj\u00eb n\u00eb funksionimin e disa klient\u00ebve t\u00eb rrall\u00eb t\u00eb post\u00ebs, q\u00eb nuk p\u00ebrputhen plot\u00ebsisht me specifikimin SMTP.
\n
Burimi: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0418\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 SEC Consult \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0438 \u043d\u043e\u0432\u0443\u044e \u0442\u0435\u0445\u043d\u0438\u043a\u0443 \u0441\u043f\u0443\u0444\u0438\u043d\u0433\u0430, \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u0443\u044e \u0440\u0430\u0441\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u044f\u043c\u0438 \u0432 \u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0438 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0432 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f\u0445 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 SMTP. \u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u0430\u044f \u0442\u0435\u0445\u043d\u0438\u043a\u0430 \u0430\u0442\u0430\u043a\u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0440\u0430\u0441\u0449\u0435\u043f\u0438\u0442\u044c \u043e\u0434\u043d\u043e \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0435 \u043d\u0430 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0440\u0430\u0437\u043d\u044b\u0445 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0439 \u043f\u0440\u0438 \u0435\u0433\u043e \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0435 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u043c SMTP-\u0441\u0435\u0440\u0432\u0435\u0440\u043e\u043c \u043d\u0430 \u0434\u0440\u0443\u0433\u043e\u0439 SMTP-\u0441\u0435\u0440\u0432\u0435\u0440, \u043f\u043e \u0438\u043d\u043e\u043c\u0443 \u0442\u0440\u0430\u043a\u0442\u0443\u044e\u0449\u0438\u0439 \u043f\u043e\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0434\u043b\u044f \u0440\u0430\u0437\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u043f\u0438\u0441\u0435\u043c, \u043f\u0435\u0440\u0435\u0434\u0430\u0432\u0430\u0435\u043c\u044b\u0445 \u0447\u0435\u0440\u0435\u0437 \u043e\u0434\u043d\u043e \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435. \u041c\u0435\u0442\u043e\u0434 \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0434\u043b\u044f \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0438 \u0444\u0438\u043a\u0442\u0438\u0432\u043d\u044b\u0445 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":112411,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-112410","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novosti-interneta"],"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\udd47SMTP Smuggling \u2014 nj\u00eb teknik\u00eb e re spufingu p\u00ebr mesazhet e post\u00ebs | ProHoster","description":"K\u00ebrkuesit nga kompania SEC Consult publikuan nj\u00eb teknik\u00eb t\u00eb re spufingu, e shkaktuar nga mos p\u00ebrputhjet n\u00eb ndjekjen e specifikacionit n\u00eb projekte t\u00eb ndryshme t\u00eb protokollit SMTP. Teknikat e propozuara t\u00eb sulmit lejojn\u00eb ndarjen e nj\u00eb mesazhi n\u00eb disa mesazhe t\u00eb ndryshme gjat\u00eb transferimit nga serveri SMTP burimor n\u00eb nj\u00eb tjet\u00ebr server SMTP, q\u00eb e interpreton ndryshe rendin p\u00ebr ndarjen e letrave t\u00eb transmetuara p\u00ebrmes nj\u00eb lidhjeje. Metoda mund t\u00eb p\u00ebrdoret p\u00ebr t\u00eb d\u00ebrguar mesazhe false.","canonical_url":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/smtp-smuggling-novaya-tehnika-spufinga-pochtovyh-soobshhenij","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sq_AL","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\udd47SMTP Smuggling \u2014 \u043d\u043e\u0432\u0430\u044f \u0442\u0435\u0445\u043d\u0438\u043a\u0430 \u0441\u043f\u0443\u0444\u0438\u043d\u0433\u0430 \u043f\u043e\u0447\u0442\u043e\u0432\u044b\u0445 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0439 | 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