{"id":172666,"date":"2026-05-19T00:24:49","date_gmt":"2026-05-18T22:24:49","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-exim-4-99-3-ustranena-uyazvimost-pozvolyayushhaya-udalyonnoe-vypolnenie-koda-pri-ispolzovanii-gnutls"},"modified":"2026-05-19T00:24:49","modified_gmt":"2026-05-18T22:24:49","slug":"v-exim-4-99-3-ustranena-uyazvimost-pozvolyayushhaya-udalyonnoe-vypolnenie-koda-pri-ispolzovanii-gnutls","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/v-exim-4-99-3-ustranena-uyazvimost-pozvolyayushhaya-udalyonnoe-vypolnenie-koda-pri-ispolzovanii-gnutls","title":{"rendered":"Exim 4.99.3-s on k\u00f5rvaldatud haavatavus, mis v\u00f5imaldab kauguselt koodi t\u00e4itmist kasutades GnuTLS-i.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Eximi e-posti serveri arendajad on v\u00e4lja andnud parandusv\u00e4ljaande Exim 4.99.3<\/strong>, mis k\u00f5rvaldab haavatavuse m\u00f5nedes e-posti agendi konfiguratsioonides. Probleem on siseselt identifitseeritud kui EXIM-Security-2026-05-01.1<\/strong>; ametlikus teates on see ka mainitud kui CVE-TBD<\/strong>.<\/p>\n

Haavatavus kuulub klassi Kaugkasutamine p\u00e4rast vabanemist<\/strong> ja avaldub s\u00f5numi sisu anal\u00fc\u00fcsimisel BDAT<\/strong> TLS-i kaudu t\u00f6\u00f6tamisel GnuTLS<\/strong>. BDAT kasutatakse SMTP laienduses CHUNKING<\/strong> s\u00f5numi sisu edastamiseks plokkidena. Eximi kirjelduse kohaselt v\u00f5ib viga tekkida, kui klient edastab BDAT-i ajal TLS-i teate close_notify enne sisu edastamise l\u00f5petamist, seej\u00e4rel lisatakse sama TCP-\u00fchenduse raames lisabait.<\/p>\n

Selline j\u00e4rjestus v\u00f5ib viia Eximi andmete kirjutamiseni m\u00e4lu puhvrisse, mis on juba vabastatud TLS-seansi l\u00f5pus. See p\u00f5hjustab kuhja kahjustuse ja v\u00f5ib potentsiaalselt v\u00f5imaldada koodi t\u00e4itmist. Teates r\u00f5hutatakse, et r\u00fcndajale piisab TLS-\u00fchenduse loomise v\u00f5imalusest ja SMTP laienduse kasutamisest CHUNKING \/ BDAT<\/strong>.<\/p>\n

Probleem m\u00f5jutab Exim 4.97, 4.98, 4.99, 4.99.1 ja 4.99.2<\/strong>, kuid ainult koos olekuga, mis toetab GnuTLS<\/strong>. Ametlikes dokumentides on see formuleeritud kui konfiguratsioonid, kus on USE_GNUTLS=yes; versioonid, mis kasutavad OpenSSL<\/strong> v\u00f5i muid TLS-raamatukogusid, ei ole selle haavatavuse all. Samuti on Eximi teates selgelt \u00f6eldud, et haavatavad konfiguratsioonid, kus on deklareeritud STARTTLS<\/strong> ja CHUNKING<\/strong>.<\/p>\n

Parandus on kaasatud Exim 4.99.3<\/strong>. Arendajate kirjelduse kohaselt tagab patch sisendi t\u00f6\u00f6tlemise virna puhastamise ajal TLS close_notify saamise korral aktiivse BDAT-i edastamise ajal, mis takistab vanade viidete edasist kasutamist. Teiste teadaolevate meetodite kohta probleemi t\u00e4ielikuks lahendamiseks, peale uuendamise, soovitustes ei ole.<\/p>\n

Eximi arendajad said vea rapordi 1. mai 2026<\/strong> Federico Kirschbaumilt XBOW Security<\/strong>. P\u00e4rast raporti kontrollimist t\u00f6\u00f6tati parandus v\u00e4lja suletud hoidlates, 7. mail teavitati jaotust probleemist kaudu suletud postiloendisse, 10. mail anti nendele piiratud juurdep\u00e4\u00e4s parandustele ning 12. mai 2026<\/strong> toimus soovituste ja parandusv\u00e4ljaande avaldamine.<\/p>\n

E-posti serverite administraatoritel soovitatakse kontrollida kasutatavat Eximi versiooni ja TLS-i tausta. server<\/a> t\u00f6\u00f6tleb Exim versioonidel 4.97 kuni 4.99.2, koos GnuTLS-iga ja kuulutab STARTTLS koos CHUNKING-iga, Exim projekti soovitus on liikuda v\u00f5imalikult kiiresti Exim 4.99.3<\/strong> v\u00f5i uuemale versioonile. Parandatud l\u00e4htekoodid on saadaval haru exim-4.99+fixes ja sildi exim-4.99.3 all, samuti tavap\u00e4rastel Eximi failide allalaadimise platvormidel.<\/p>\n

Allikas: linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 Exim \u0432\u044b\u043f\u0443\u0441\u0442\u0438\u043b\u0438 \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0440\u0435\u043b\u0438\u0437 Exim 4.99.3, \u0443\u0441\u0442\u0440\u0430\u043d\u044f\u044e\u0449\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u044f\u0445 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0430\u0433\u0435\u043d\u0442\u0430. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u0445\u043e\u0434\u0438\u0442 \u043f\u043e\u0434 \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0438\u043c \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u043e\u043c EXIM-Security-2026-05-01.1; \u0432 \u043e\u0444\u0438\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u043c \u0443\u0432\u0435\u0434\u043e\u043c\u043b\u0435\u043d\u0438\u0438 \u0442\u0430\u043a\u0436\u0435 \u0444\u0438\u0433\u0443\u0440\u0438\u0440\u0443\u0435\u0442 \u043a\u0430\u043a CVE-TBD. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0441\u044f \u043a \u043a\u043b\u0430\u0441\u0441\u0443 Remote Use-After-Free \u0438 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043f\u0440\u0438 \u0440\u0430\u0437\u0431\u043e\u0440\u0435 \u0442\u0435\u043b\u0430 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u044f BDAT \u043f\u0440\u0438 \u0440\u0430\u0431\u043e\u0442\u0435 TLS \u0447\u0435\u0440\u0435\u0437 GnuTLS. BDAT \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0432 SMTP-\u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u0438 CHUNKING \u0434\u043b\u044f \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0442\u0435\u043b\u0430 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-172666","post","type-post","status-publish","format-standard","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\udd47Exim 4.99.3-s on k\u00f5rvaldatud haavatavus, mis v\u00f5imaldab kaugjuhtimist GnuTLS-i kasutamisel | ProHoster","description":"Eximi e-posti serveri arendajad on v\u00e4lja andnud parandava v\u00e4ljundiga Exim 4.99.3, mis k\u00f5rvaldab haavatavuse teatud e-posti agendi konfiguratsioonides.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/news\/v-exim-4-99-3-ustranena-uyazvimost-pozvolyayushhaya-udalyonnoe-vypolnenie-koda-pri-ispolzovanii-gnutls","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\u0412 Exim 4.99.3 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043a\u043e\u0434\u0430 \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 GnuTLS | ProHoster","og:description":"\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 Exim \u0432\u044b\u043f\u0443\u0441\u0442\u0438\u043b\u0438 \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0440\u0435\u043b\u0438\u0437 Exim 4.99.3, \u0443\u0441\u0442\u0440\u0430\u043d\u044f\u044e\u0449\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u044f\u0445 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0430\u0433\u0435\u043d\u0442\u0430.","og:url":"https:\/\/prohoster.info\/et\/blog\/news\/v-exim-4-99-3-ustranena-uyazvimost-pozvolyayushhaya-udalyonnoe-vypolnenie-koda-pri-ispolzovanii-gnutls","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":"2026-05-18T22:24:49+00:00","article:modified_time":"2026-05-18T22:24:49+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\/et\/wp-json\/wp\/v2\/posts\/172666","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/comments?post=172666"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/172666\/revisions"}],"predecessor-version":[{"id":173168,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/172666\/revisions\/173168"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/media?parent=172666"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/categories?post=172666"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/tags?post=172666"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}