{"id":169325,"date":"2026-04-19T11:11:58","date_gmt":"2026-04-19T09:11:58","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/udalyonnoe-vypolnenie-koda-v-forke-pochtovogo-servera-qmail-ot-proekta-sagredo"},"modified":"2026-04-19T11:11:58","modified_gmt":"2026-04-19T09:11:58","slug":"udalyonnoe-vypolnenie-koda-v-forke-pochtovogo-servera-qmail-ot-proekta-sagredo","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/udalyonnoe-vypolnenie-koda-v-forke-pochtovogo-servera-qmail-ot-proekta-sagredo","title":{"rendered":"Daljinsko izvr\u0161avanje koda u fork-u po\u0161tanskog poslu\u017eitelja qmail iz projekta Sagredo","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

U razvoju projekta Sagredo forka po\u0161tanskog servera qmail otkrivena je ranjivost (CVE-2026-41113) koja omogu\u0107uje daljinsko izvr\u0161enje proizvoljnih komandi na serveru s pravima korisnika qmailr. Ranjivost je uzrokovana nedostatkom escape-a specijalnih znakova u imenu hosta koje vra\u0107a DNS server prilikom odre\u0111ivanja MX gateway-a, u kombinaciji s prijenosom dobivenog imena u komandu popen bez adekvatnog razdvajanja i filtriranja argumenata prilikom poziva shell-a. Ranjivost je ispravljena u izdanju 2026.04.07. Objavljen je alat za eksploataciju ranjivosti. <\/p>\n

U listopadu 2024. godine, razvojni tim Sagredo je u alatu qmail-remote dodao funkciju \u00abnotlshosts_auto\u00bb, koja pamti hostove s neispravnom implementacijom TLS protokola, s kojima ne uspijeva uspostaviti TLS vezu, kako bi se sprije\u010dilo beskona\u010dno ponavljanje slanja e-po\u0161te na takve hostove. <\/p>\n

Problem je u tome \u0161to je spremanje imena hosta vr\u0161eno putem pokretanja komandne ljuske pomo\u0107u funkcije popen() s argumentom \u2018\/bin\/touch %s\/control\/notlshosts\/%s\u2019, u koji se ubacivalo ime MX hosta, vra\u0107enog od DNS servera. Napada\u010d je mogao pokrenuti vlastiti DNS server, koji vra\u0107a u DNS zapisima MX ime poput \u2018x\u2019id>\/tmp\/pwned\u2019y.evil.com\u2019 i tako prouzro\u010diti izvr\u0161enje uba\u010denog koda, stvoriv\u0161i uvjete za pozivanje funkcije za spremanje imena neuspje\u0161nog po\u0161tanskog. poslu\u017eitelja<\/a>.
\n
Izvor: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u043c \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u043c Sagredo \u0444\u043e\u0440\u043a\u0435 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 qmail \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2026-41113), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0445 \u043a\u043e\u043c\u0430\u043d\u0434 \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0435 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f qmailr. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c 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otkrivena je ranjivost (CVE-2026-41113) koja omogu\u0107uje daljinsko izvr\u0161enje proizvoljnih komandi na serveru s pravima korisnika qmailr.","canonical_url":"https:\/\/prohoster.info\/hr\/blog\/news\/udalyonnoe-vypolnenie-koda-v-forke-pochtovogo-servera-qmail-ot-proekta-sagredo","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hr_HR","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\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043a\u043e\u0434\u0430 \u0432 \u0444\u043e\u0440\u043a\u0435 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qmailr.","og:url":"https:\/\/prohoster.info\/hr\/blog\/news\/udalyonnoe-vypolnenie-koda-v-forke-pochtovogo-servera-qmail-ot-proekta-sagredo","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2026-04-19T09:11:58+00:00","article:modified_time":"2026-04-19T09:11:58+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts\/169325","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/comments?post=169325"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts\/169325\/revisions"}],"predecessor-version":[{"id":170739,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts\/169325\/revisions\/170739"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/media?parent=169325"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/categories?post=169325"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/tags?post=169325"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}